DOCSLIB.ORG

Carbonyl Sulfide

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Right to Know Hazardous Substance Fact Sheet Common Name: CARBONYL SULFIDE Synonyms: Carbon Oxysulfide; Oxycarbon Sulfide CAS Number: 463-58-1 Chemical Name: Carbon Oxide Sulfide (COS) RTK Substance Number: 0349 Date: September 1998 Revision: May 2009 DOT Number: UN 2204 Description and Use EMERGENCY RESPONDERS >>>> SEE LAST PAGE Carbonyl Sulfide is a colorless gas with a distinct Sulfur Hazard Summary (rotten egg) odor. It is used as a grain fumigant and to make Hazard Rating NJDOH NFPA other Sulfur compounds. It is also found in tobacco smoke and HEALTH - 3 in emissions from coal gasification and diesel engines. FLAMMABILITY - 4 REACTIVITY - 1 FLAMMABLE POISONOUS GASES ARE PRODUCED IN FIRE Reasons for Citation CONTAINERS MAY EXPLODE IN FIRE f Carbonyl Sulfide is on the Right to Know Hazardous Substance List because it is cited by DOT, DEP, IRIS, NFPA Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious; 4=severe and EPA. f This chemical is on the Special Health Hazard Substance List. f Carbonyl Sulfide can affect you when inhaled and by passing through the skin. f Carbonyl Sulfide can irritate the skin and may cause pain and redness. Contact with the liquefied gas may cause frostbite. f Eye contact can cause irritation with possible eye damage. SEE GLOSSARY ON PAGE 5. f Contact can irritate the nose and throat. f Inhaling Carbonyl Sulfide can irritate the lungs. Higher FIRST AID exposures may cause a build-up of fluid in the lungs Eye Contact (pulmonary edema), a medical emergency. f Immediately flush with large amounts of water for at least 15 f Exposure can cause nausea, vomiting, weakness and minutes, lifting upper and lower lids. Remove contact muscle cramps, and may cause an irregular heartbeat lenses, if worn, while flushing. Seek medical attention. (arrhythmia) f High or repeated exposure may affect the nervous system. Skin Contact Higher concentrations can cause convulsions, sudden f Quickly remove contaminated clothing. Immediately wash collapse and even death. contaminated skin with large amounts of water. Seek f Carbonyl Sulfide may affect the brain. medical attention. f Carbonyl Sulfide is a FLAMMABLE GAS and a f In case of exposure to liquefied gas, immerse affected part DANGEROUS FIRE HAZARD. in warm water. Seek medical attention. Inhalation Workplace Exposure Limits f Remove the person from exposure. f Begin rescue breathing (using universal precautions) if No occupational exposure limits have been established for breathing has stopped and CPR if heart action has stopped. Carbonyl Sulfide. However, it may pose a health risk. f Transfer promptly to a medical facility. Always follow safe work practices. f Medical observation is recommended for 24 to 48 hours after overexposure, as pulmonary edema may be delayed. f It should be recognized that Carbonyl Sulfide can be absorbed through your skin, thereby increasing your exposure. EMERGENCY NUMBERS Poison Control: 1-800-222-1222 CHEMTREC: 1-800-424-9300 NJDEP Hotline: 1-877-927-6337 National Response Center: 1-800-424-8802 CARBONYL SULFIDE Page 2 of 6 Determining Your Exposure Cancer Hazard f According to the information presently available to the New f Read the product manufacturer’s Material Safety Data Jersey Department of Health, Carbonyl Sulfide has not Sheet (MSDS) and the label to determine product been tested for its ability to cause cancer in animals. ingredients and important safety and health information about the product mixture. Reproductive Hazard f According to the information presently available to the New f For each individual hazardous ingredient, read the New Jersey Department of Health, Carbonyl Sulfide has not Jersey Department of Health Hazardous Substance Fact been tested for its ability to affect reproduction. Sheet, available on the RTK website (www.nj.gov/health/eoh/rtkweb) or in your facility’s RTK Other Effects Central File or Hazard Communication Standard file. f High or repeated exposure may affect the nervous system causing headache, dizziness, lightheadedness and passing f You have a right to this information under the New Jersey out. Higher concentrations can cause convulsions, sudden Worker and Community Right to Know Act, the Public collapse and even death. Employees Occupational Safety and Health (PEOSH) Act f Carbonyl Sulfide may affect the brain causing reduced if you are a public worker in New Jersey, and under the memory, inability to concentrate and personality changes. federal Occupational Safety and Health Act (OSHA) if you f Carbonyl Sulfide can irritate the lungs. Repeated exposure are a private worker. may cause bronchitis to develop with coughing, phlegm, and/or shortness of breath. f The New Jersey Right to Know Act requires most employers to label chemicals in the workplace and requires public employers to provide their employees with information concerning chemical hazards and controls. Medical The federal OSHA Hazard Communication Standard (29 Medical Testing CFR 1910.1200) and the PEOSH Hazard Communication If symptoms develop or overexposure is suspected, the following are recommended: Standard (N.J.A.C. 12:100-7) require employers to provide similar information and training to their employees. f Chest x-ray and lung function tests f Special 24-48 hour EKG (Holter monitor) to observe and This Fact Sheet is a summary of available information record abnormal heart rhythms regarding the health hazards that may result from exposure. f Exam of the nervous system Duration of exposure, concentration of the substance and other f EEG factors will affect your susceptibility to any of the potential effects described below. Any evaluation should include a careful history of past and present symptoms with an exam. Medical tests that look for damage already done are not a substitute for controlling Health Hazard Information exposure. Acute Health Effects The following acute (short-term) health effects may occur Request copies of your medical testing. You have a legal right immediately or shortly after exposure to Carbonyl Sulfide: to this information under the OSHA Access to Employee Exposure and Medical Records Standard (29 CFR 1910.1020). f Carbonyl Sulfide can irritate the skin and may cause pain Mixed Exposures and redness. Contact with the liquefied gas may cause f Smoking can cause heart disease, lung cancer, frostbite. emphysema, and other respiratory problems. It may worsen f Eye contact can cause irritation with possible eye damage. respiratory conditions caused by chemical exposure. Even if f Contact can irritate the nose and throat causing coughing you have smoked for a long time, stopping now will reduce and wheezing. your risk of developing health problems. f Inhaling Carbonyl Sulfide can irritate the lungs causing coughing and/or shortness of breath. Higher exposures may cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency, with severe shortness of breath. f Exposure can cause nausea, vomiting, weakness and muscle cramps, and may cause an irregular heartbeat (arrhythmia) Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Carbonyl Sulfide and can last for months or years: CARBONYL SULFIDE Page 3 of 6 Workplace Controls and Practices f Safety equipment manufacturers recommend Polyvinyl Alcohol, Silver Shield®/4H®, Viton and Barrier® as glove Very toxic chemicals, or those that are reproductive hazards or materials for Sulfur compounds, Sulfides and Disulfides, and sensitizers, require expert advice on control measures if a less Tychem® BR, LV, Responder® and TK; and Trellchem® toxic chemical cannot be substituted. Control measures HPS and VPS, or the equivalent, as protective clothing include: (1) enclosing chemical processes for severely materials for Sulfur compounds, Sulfides and Disulfides. irritating and corrosive chemicals, (2) using local exhaust f All protective clothing (suits, gloves, footwear, headgear) ventilation for chemicals that may be harmful with a single should be clean, available each day, and put on before work. exposure, and (3) using general ventilation to control f Where exposure to cold equipment, vapors, or liquid may exposures to skin and eye irritants. For further information on occur, employees should be provided with insulated gloves workplace controls, consult the NIOSH document on Control and special clothing designed to prevent the freezing of body Banding at www.cdc.gov/niosh/topics/ctrlbanding/. tissues. The following work practices are also recommended: Eye Protection f Label process containers. f Wear non-vented, impact resistant goggles when working f Provide employees with hazard information and training. with fumes, gases, or vapors. f Monitor airborne chemical concentrations. f Wear a face shield along with goggles when working with f Use engineering controls if concentrations exceed corrosive, highly irritating or toxic substances. recommended exposure levels. f Provide eye wash fountains and emergency showers. Respiratory Protection f Wash or shower if skin comes in contact with a hazardous Improper use of respirators is dangerous. Respirators material. should only be used if the employer has implemented a written f Always wash at the end of the workshift. program that takes into account workplace conditions, f Change into clean clothing if clothing becomes requirements for worker training, respirator fit testing, and contaminated. medical exams, as described in the OSHA Respiratory f Do not take contaminated clothing home. f Get special training to wash contaminated clothing. Protection Standard (29 CFR 1910.134). f Do not eat, smoke, or drink in areas where chemicals are being handled, processed or stored. f Where the potential for high exposure exists, use a NIOSH f Wash hands carefully before eating, smoking, drinking, approved supplied-air respirator with a full facepiece applying cosmetics or using the toilet. operated in a pressure-demand or other positive-pressure mode. For increased protection use in combination with an In addition, the following may be useful or required: auxiliary self-contained breathing apparatus operated in a pressure-demand or other positive-pressure mode.
Recommended publications
  • Advanced Treatment Processes for Hydrogen Sulfide

    Advanced Treatment Processes for Hydrogen Sulfide

    Removing the Stink: Advanced Treatment Processes for Hydrogen Sulfide Clayton Johnson, Christine Owen, Luke Mulford, Shahnawaz Sinha, Zaid Chowdhury, Andre Dieffenthaller, and Andrew Coleman ampa Bay Water supplies drinking The final alternative under considera- water to more than 2 million people in tion is biological oxidation followed by chlo- Clayton Johnson is a project engineer in Tthe greater Tampa Bay and adjacent rination and ultrafiltration following biolog- the Tampa office of the environmental areas. Approximately 60 percent of its source ical oxidation prior to distribution. engineering firm Malcolm Pirnie Inc. water comes from groundwater supplies. This article will discuss preliminary Christine Owen is a water quality assur- ance officer with Tampa Bay Water. Luke Groundwater in some portions of the region findings of this ongoing pilot study, including Mulford is a water quality engineer with has a moderate amount (about 2 mg/L as operational variables and effectiveness of the Hillsborough County Water Resource total sulfides) of hydrogen sulfide. Tampa Bay proposed treatment processes for hydrogen Services. Shahnawaz Sinha is a project Water currently provides water to a water sulfide removal. As many Florida utilities are engineer with Malcolm Pirnie in Phoenix, treatment facility that utilizes aeration fol- faced with the challenge of removing hydro- Arizona. Zaid Chowdhury is a senior lowed by biological oxidation to remove gen sulfide from their groundwater, prelimi- associate with Malcolm Pirnie in Phoenix. hydrogen sulfide. nary results of this study will be broadly Andre Dieffenthaller is a senior associate This combined practice (Figure 1) is applicable. Results from this study will pro- with Malcolm Pirnie in Schaumburg, effective, but there are occasional reductions in vide useful information to water utilities that Illinois.
  • Toxicological Profile for Hydrogen Sulfide and Carbonyl Sulfide

    Toxicological Profile for Hydrogen Sulfide and Carbonyl Sulfide

    HYDROGEN SULFIDE AND CARBONYL SULFIDE 149 6. POTENTIAL FOR HUMAN EXPOSURE 6.1 OVERVIEW Hydrogen sulfide has been found in at least 34 of the 1,832 waste sites that have been proposed for inclusion on the EPA National Priorities List (NPL) and carbonyl sulfide was detected in at least 4 of the 1,832 waste sites (ATSDR 2015). However, the number of sites evaluated for these substances is not known and hydrogen sulfide and carbonyl sulfide are ubiquitous in the atmosphere. The frequency of these sites can be seen in Figures 6-1 and 6-2. Carbonyl sulfide and hydrogen sulfide are principal components in the natural sulfur cycle. Bacteria, fungi, and actinomycetes (a fungus-like bacteria) release hydrogen sulfide during the decomposition of 2- sulfur containing proteins and by the direct reduction of sulfate (SO4 ). Hydrogen sulfide is also emitted from volcanoes, stagnant or polluted waters, and manure or coal pits with low oxygen content (Aneja 1990; Khalil and Ramussen 1984). The majority of carbonyl sulfide that enters the environment is released to air and it is very abundant in the troposphere (Conrad and Meuser 2000; EPA 1994c, 1994d; Meinrat et al. 1992; Simmons et al. 2012; Stimler et al. 2010). It enters the atmosphere from both natural and anthropogenic sources (EPA 1994c, 1994d; Meinrat et al. 1992; Stimler et al. 2010). Carbonyl sulfide is released from wetlands, salt marshes, soil, oceans, deciduous and coniferous trees, and volcanic gases (Blake et al. 2004; EPA 1994c, 1994d; Meinrat et al. 1992; Rasmussen et al. 1982a, 1982b; Stimler et al.
  • Platinum-Group Elements and Gold in Sulfide Melts from Modern Arc Basalt (Tolbachik Volcano, Kamchatka)

    Platinum-Group Elements and Gold in Sulfide Melts from Modern Arc Basalt (Tolbachik Volcano, Kamchatka)

    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by The Australian National University ÔØ ÅÒÙ×Ö ÔØ Platinum-group elements and gold in sulfide melts from modern arc basalt (Tolbachik volcano, Kamchatka) M. Zelenski, V.S. Kamenetsky, J.A. Mavrogenes, L.V. Danyushevsky, D. Matveev, A.A. Gurenko PII: S0024-4937(17)30290-6 DOI: doi:10.1016/j.lithos.2017.08.012 Reference: LITHOS 4395 To appear in: LITHOS Received date: 30 May 2017 Accepted date: 21 August 2017 Please cite this article as: Zelenski, M., Kamenetsky, V.S., Mavrogenes, J.A., Danyu- shevsky, L.V., Matveev, D., Gurenko, A.A., Platinum-group elements and gold in sul- fide melts from modern arc basalt (Tolbachik volcano, Kamchatka), LITHOS (2017), doi:10.1016/j.lithos.2017.08.012 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT Platinum-group elements and gold in sulfide melts from modern arc basalt (Tolbachik volcano, Kamchatka) M. Zelenski a, V.S. Kamenetsky a,b,*, J.A. Mavrogenes c, L.V. Danyushevsky b, D. Matveev d, A.A. Gurenko e a Institute of Experimental Mineralogy RAS, Chernogolovka 142432, Russia b Earth Sciences and CODES, University of Tasmania, Private Bag 79, Hobart, TAS 7001, Australia c Research School of Earth Sciences, Australian National University, Canberra, ACT 2601, Australia d Institute of Solid State Physics RAS, Chernogolovka 142432, Russia e Centre de Recherches Pétrographiques et Géochimiques (CRPG), UMR 7358, Université de Lorraine, 54501 Vandoeuvre-lès-Nancy, France * Corresponding author.
  • The Determination of Sulfate and Sulfide Sulfur in Rocks Or Minerals

    The Determination of Sulfate and Sulfide Sulfur in Rocks Or Minerals

    The Determination of Sulfate and Sulfide Sulfur in Rocks or Minerals By ANGELINA C. VLISIDIS CONTRIBUTIONS TO GEOCHEMISTRY GEOLOGICAL SURVEY BULLETIN 1214-D UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 15 cents (paper cover) CONTENTS Page Abstract_____--__-___-_______-__---____,__-_-__-_---_-_______-_- Dl Introduction. ______________________________________________________ 1 Preparations. _________._.-.__-_-.__.._-_---__----.________._.._____ 2 Standard samples____________________________________________ 2 Reagents. _______________.-_-___-____-__-_-__-_-___-_______-_- 2 Procedure._______________________________________________________ 2 Results__ __________-______-_____----__--_--_----_-_-_-___-___--_ 3 References.._ _____________________________________________________ 5 TABLE Page TABLE 1. Results of sulfide and sulfate sulfur analyses in which varying amounts of a sulfate standard were added to sulfide minerals.. _ D4 m 209-517 66 CONTRIBUTIONS TO GEOCHEMISTRY THE DETERMINATION OF SULFATE AND SULFIDE SULFUR IN ROCKS OR MINERALS By ANGELINA C. VLISEDIS , ABSTRACT A method for the determination of sulfate and sulfide sulfur that occur together in rocks or minerals is presented. All the sulfate sulfur is converted to barium sulfate in an inert atmosphere to prevent oxidation of any sulfide sulfur. Cadmium chloride is added to precipitate any sulfide ion that may be liberated. The sulfate sulfur is then measured indirectly by the determination of the barium and is therefore unaffected by any. subsequent oxidation of the sulfide sulfur.
  • SAFETY DATA SHEET Carbonyl Sulfide

    SAFETY DATA SHEET Carbonyl Sulfide

    SAFETY DATA SHEET Carbonyl Sulfide Section 1. Identification GHS product identifier : Carbonyl Sulfide Chemical name : carbonyl sulphide Other means of : Carbon oxide sulfide; Carbonyl sulfide; Carbon oxide sulphide (carbonyl sulphide); identification Carbon oxide sulfide (COS); carbon oxysulfide Product use : Synthetic/Analytical chemistry. Synonym : Carbon oxide sulfide; Carbonyl sulfide; Carbon oxide sulphide (carbonyl sulphide); Carbon oxide sulfide (COS); carbon oxysulfide SDS # : 001012 Supplier's details : Airgas USA, LLC and its affiliates 259 North Radnor-Chester Road Suite 100 Radnor, PA 19087-5283 1-610-687-5253 24-hour telephone : 1-866-734-3438 Section 2. Hazards identification OSHA/HCS status : This material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200). Classification of the : FLAMMABLE GASES - Category 1 substance or mixture GASES UNDER PRESSURE - Liquefied gas ACUTE TOXICITY (inhalation) - Category 3 GHS label elements Hazard pictograms : Signal word : Danger Hazard statements : Extremely flammable gas. May form explosive mixtures with air. Contains gas under pressure; may explode if heated. May cause frostbite. Toxic if inhaled. Precautionary statements General : Read and follow all Safety Data Sheets (SDS’S) before use. Read label before use. Keep out of reach of children. If medical advice is needed, have product container or label at hand. Close valve after each use and when empty. Use equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Use a back flow preventative device in the piping. Use only equipment of compatible materials of construction. Always keep container in upright position. Do not depend on odor to detect presence of gas.
  • 2020 Stainless Steels in Ammonia Production

    2020 Stainless Steels in Ammonia Production

    STAINLESS STEELS IN AMMONIA PRODUCTION A DESIGNERS’ HANDBOOK SERIES NO 9013 Produced by Distributed by AMERICAN IRON NICKEL AND STEEL INSTITUTE INSTITUTE STAINLESS STEELS IN AMMONIA PRODUCTION A DESIGNERS’ HANDBOOK SERIES NO 9013 Originally, this handbook was published in 1978 by the Committee of Stainless Steel Producers, American Iron and Steel Institute. The Nickel Institute republished the handbook in 2020. Despite the age of this publication the information herein is considered to be generally valid. Material presented in the handbook has been prepared for the general information of the reader and should not be used or relied on for specific applications without first securing competent advice. The Nickel Institute, the American Iron and Steel Institute, their members, staff and consultants do not represent or warrant its suitability for any general or specific use and assume no liability or responsibility of any kind in connection with the information herein. Nickel Institute [email protected] www.nickelinstitute.org CONTENTS INTRODUCTION ............................ 4 PROCESS DESCRIPTION ............ 5 CORROSIVES IN AMMONIA PROCESSES ............... 5 CONSIDERATIONS FOR SELECTING STAINLESS STEELS .......................................... 6 Desulfurization of Natural Gas ....................... 6 Catalytic Steam Reforming of Natural Gas ....................... 6 Carbon Monoxide Shift .............. 8 Removal of Carbon Dioxide . 10 Methanation ............................. 11 Synthesis of Ammonia ............. 11
  • Common Name: SELENIUM SULFIDE HAZARD SUMMARY

    Common Name: SELENIUM SULFIDE HAZARD SUMMARY

    Common Name: SELENIUM SULFIDE CAS Number: 7446-34-6 RTK Substance number: 1653 DOT Number: UN 2657 Date: October 1995 Revision: October 2001 ------------------------------------------------------------------------- ------------------------------------------------------------------------- HAZARD SUMMARY * Selenium Sulfide can affect you when breathed in and by * If you think you are experiencing any work-related health passing through your skin. problems, see a doctor trained to recognize occupational * Selenium Sulfide should be handled as a CARCINOGEN- diseases. Take this Fact Sheet with you. -WITH EXTREME CAUTION. * Contact can irritate the eyes with possible eye damage. WORKPLACE EXPOSURE LIMITS * Breathing Selenium Sulfide can irritate the nose and The following exposure limits are for Selenium compounds throat. (measured as Selenium): * High exposure may cause headache, nausea, vomiting, garlic odor of the breath, metallic taste and coated tongue. OSHA: The legal airborne permissible exposure limit * Repeated exposure can cause pallor, nervousness and (PEL) is 0.2 mg/m3 averaged over an 8-hour mood changes. workshift. * Selenium Sulfide may damage the liver and kidneys. NIOSH: The recommended airborne exposure limit is IDENTIFICATION 0.2 mg/m3 averaged over a 10-hour workshift. Selenium Sulfide is a bright orange powder. It is used in medicated shampoos. ACGIH: The recommended airborne exposure limit is 3 0.2 mg/m averaged over an 8-hour workshift. REASON FOR CITATION * Selenium Sulfide is on the Hazardous Substance List * Selenium Sulfide may be a CARCINOGEN in humans. because it is regulated by OSHA and cited by ACGIH, There may be no safe level of exposure to a carcinogen, so DOT, NIOSH, NTP, DEP, HHAG and EPA. all contact should be reduced to the lowest possible level.
  • Hydrogen Sulfide Public Health Statement

    Hydrogen Sulfide Public Health Statement

    PUBLIC HEALTH STATEMENT Hydrogen Sulfide Division of Toxicology and Human Health Sciences December 2016 This Public Health Statement summarizes what is known about hydrogen sulfide such as possible health effects from exposure and what you can do to limit exposure. The U.S. Environmental Protection Agency (EPA) identifies the most serious hazardous waste sites in the nation. These sites make up the National Priorities List (NPL) and are sites targeted for long-term federal clean-up activities. U.S. EPA has found hydrogen sulfide in at least 34 of the 1,832 current or former NPL sites. The total number of NPL sites evaluated for hydrogen sulfide is not known. But the possibility remains that as more sites are evaluated, the sites at which hydrogen sulfide is found may increase. This information is important because these future sites may be sources of exposure, and exposure to hydrogen sulfide may be harmful. If you are exposed to hydrogen sulfide, many factors determine whether you’ll be harmed. These include how much you are exposed to (dose), how long you are exposed (duration), and how you are exposed (route of exposure). You must also consider the other chemicals you are exposed to and your age, sex, diet, family traits, lifestyle, and state of health. WHAT IS HYDROGEN SULFIDE? Hydrogen sulfide (H2S) is a flammable, colorless gas that smells like rotten eggs. People usually can smell hydrogen sulfide at low concentrations in air, ranging from 0.0005 to 0.3 parts hydrogen sulfide per million parts of air (ppm). At high concentrations, a person might lose their ability to smell it.
  • Kinetics of the Ozonation of Dimethyl Sulfide in the Gas Phase

    Kinetics of the Ozonation of Dimethyl Sulfide in the Gas Phase

    University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1973 Kinetics of the ozonation of dimethyl sulfide in the gas phase Robert John Moody The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Moody, Robert John, "Kinetics of the ozonation of dimethyl sulfide in the gas phase" (1973). Graduate Student Theses, Dissertations, & Professional Papers. 8125. https://scholarworks.umt.edu/etd/8125 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. KINETICS OF THE OZONATION OF DIMETHYL SOLFIDB IN THE GAS PHASE by Robert J, Moody B.S., University of Montana, 1968 Presented in partial fulfillment of the requirements for the degree of Master of Science UNIVERSITY OF MONTANA 1973 Approved by: Chairman, Board of Examiners Deanf 'Graduait Schoo Date 7 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number: EP38926 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion.
  • Carbonyl Sulfide, Dimethyl Sulfide and Carbon Disulfide In

    Carbonyl Sulfide, Dimethyl Sulfide and Carbon Disulfide In

    Atmospheric Environment 44 (2010) 3805e3813 Contents lists available at ScienceDirect Atmospheric Environment journal homepage: www.elsevier.com/locate/atmosenv Carbonyl sulfide, dimethyl sulfide and carbon disulfide in the Pearl River Delta of southern China: Impact of anthropogenic and biogenic sources H. Guo a,*, I.J. Simpson b, A.J. Ding c,T.Wanga, S.M. Saunders d, T.J. Wang c, H.R. Cheng a, B. Barletta b, S. Meinardi b, D.R. Blake b, F.S. Rowland b a Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hong Kong b Department of Chemistry, University of California at Irvine, Irvine, USA c School of Atmospheric Sciences, Nanjing University, China d School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Perth, Australia article info abstract Article history: Reduced sulfur compounds (RSCs) such as carbonyl sulfide (OCS), dimethyl sulfide (DMS) and carbon Received 28 October 2009 disulfide (CS2) impact radiative forcing, ozone depletion, and acid rain. Although Asia is a large source of Received in revised form these compounds, until now a long-term study of their emission patterns has not been carried out. Here 19 June 2010 we analyze 16 months of RSC data measured at a polluted rural/coastal site in the greater Pearl River Accepted 22 June 2010 Delta (PRD) of southern China. A total of 188 canister air samples were collected from August 2001 to December 2002. The OCS and CS2 mixing ratios within these samples were higher in autumn/winter and Keywords: lower in summer due to the influence of Asian monsoon circulations.
  • Hydrogen Sulfide Fact Sheet

    Hydrogen Sulfide Fact Sheet

    Hydrogen Sulfide Fact Sheet What is hydrogen sulfide? Hydrogen sulfide (H 2S) occurs naturally in crude petroleum, natural gas, volcanic gases, and hot springs. It can also result from bacterial breakdown of organic matter. It is also produced by human and animal wastes. Bacteria found in your mouth and gastrointestinal tract produce hydrogen sulfide from bacteria decomposing materials that contain vegetable or animal proteins. Hydrogen sulfide can also result from industrial activities, such as food processing, coke ovens, kraft paper mills, tanneries, and petroleum refineries. Hydrogen sulfide is a flammable, colorless gas with a characteristic odor of rotten eggs. It is commonly known as hydrosulfuric acid, sewer gas, and stink damp. People can smell it at low levels. What happens to hydrogen sulfide when it enters the environment? • Hydrogen sulfide is released primarily as a gas and spreads in the air. • Hydrogen sulfide remains in the atmosphere for about 18 hours. • When released as a gas, it will change into sulfur dioxide and sulfuric acid. • In some instances, it may be released as a liquid waste from an industrial facility. How might I be exposed to hydrogen sulfide? • You may be exposed to hydrogen sulfide from breathing contaminated air or drinking contaminated water. • Individuals living near a wastewater treatment plant, a gas and oil drilling operation, a farm with manure storage or livestock confinement facilities, or a landfill may be exposed to higher levels of hydrogen sulfide. • You can be exposed at work if you work in the rayon textiles, petroleum and natural gas drilling and refining, or wastewater treatment industries.
  • Oxidation of Sulfide Minerals. V. Galena, Sphalerite and Chalcogite

    Oxidation of Sulfide Minerals. V. Galena, Sphalerite and Chalcogite

    Canadian Mineralogist Vol. 18,pp. 365-372(1980) OXIDATIONOF SULFIDEMINERALS. V. GALENA,SPHALERITE AND CHALCOGITE H.F. STEGBR eup L.E. DESJARDINS Mineral SciencesLaboratories, Canada Centre lor Mineral and Energy Technology, Department ol Energy, Mines and Resources,Ottawa, Ontaio KIA OGI AssrRecr long-term stability of sulfide-bearing ores and concentrates.Part of this study was concerned Samples of galena, sphalerite and cbalcocite were with the nature of the products and kinetics of oxidized at 52oC and, 68Vo of relative humidity the oxidation of the commonly encountered periods to five weeks, and the prqd- in air for up sulfide minerals. The oxidation of pyrite, chal- for metal and sulfur-bearing ucts were analyzed pyrrhotite at 52oC and, 687o of. species. Galena is. oxidized to PbSOa, sphalerite copyrite and (RH) has already been in- to ZnSO. * FezO, if iron-bearing, and chalcocite relative humidity to CuO and CuS. The oxidation of galena and vestigated (Steger & Desjardins 1978). This re- sphalerite proceeds according to a linear rate potr summarizes the results of the study 9f tle law: that of chalcocite leads to the formation of a bxidation of galena, sphalerite and chalcocite coherent product layer impenetrable to Oz and HrO under the same conditions. vapor. The air oxidation of galena at relatively low without Keywords: air oxidation, oxidation products, sul- temperatures has been investigated fide minerals, galena, sphalerite, chalcocite. reaching a consensuson the nature of the oxida- tion product. Hagihara (1952), using a re- Sourvrlrnp flection electron-diffraction technique, and Kirkwood & Nutting (1965), using a trans- Nous avons 6tudi6 I'oxydation dans I'air d'6chan- mission electron-diffraction technique, found tillons de galdne, de sphal6rite et de chalcocite i this product to be PbSOo,whereas Leia et al.