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Measurement & Monitoring: 22nd Quarterly Literature Update These references have been added to the literature database developed for the Measurement and Monitoring Technologies for the 21st Century (21M2) website. The searchable archive of abstracts is located at http://www.clu-in.org/programs/21m2/litsearch.cfm Accumulation of Organochlorine Pesticides by Semipermeable Membrane Devices Using Composite Complex Liao, Long B. and Xian M. Xiaoa, Chinese Academy of Sciences, Guangzhou, China. Chemosphere, Vol 64 No 9, p 1592-1600, Aug 2006 Semipermeable membrane devices have been developed for passive in situ monitoring of organochlorine pesticides in aqueous solution. The device consists of a thin film of neutral lipid triolein enclosed in thin-walled tubing made of composite cellulose acetate (CA) membrane supported by linear low-density polyethylene (LLDPE), and is referred to as a CAPE. Test results indicate that the triolein-CAPE (TCAPE) could accumulate hydrophobic pesticides quickly and efficiently in water. In the lab, uptake equilibrium is reached within 20 h. Some mathematical relationships of TCAPE/water partition coefficient, triolein/water partition coefficient, and octanol/water partition coefficient were developed under laboratory conditions. The device was also tested under field conditions, where the average concentration of pesticides in surface water could be estimated by measuring pesticides concentrations in the device. An Accurate, Precise, and Cost-Effective Method for Measuring Mercury in Production Gas Streams: Method 40 CFR Part 75 App. K Brunette, Robert, Frontier GeoSciences Inc., Seattle, WA. IPEC 2006: 13th Annual International Petroleum Environmental Conference, 17-20 October 2006, San Antonio, TX. [abstract only] The author describes a rugged, accurate, precise and inexpensive sampling and analytical method for measuring mercury in process gas streams.
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