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Monitoring of Three SEQ Reservoirs for Organic Contaminants Following The

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Monitoring of Three SEQ Reservoirs for Organic Contaminants Following The Catchment and Drinking Water Quality Micro Pollutant Monitoring Program – Passive Sampling Report 4 – Summer 2016 June 3, 2016 1 national research centre for environmental toxicology Entox is a joint venture between The University of Queensland and Queensland Health Project Team Elissa O’Malley , Sarit Kaserzon, Christie Gallen, Kristie Thompson, Chris Paxman, Natalia Montero Ruiz, Geoff Eaglesham, Maria Jose Gomez Ramos, Michael Gallen, Xianyu Wang, Laurence Hearn and Jochen Mueller. Acknowledgements Entox would like to acknowledge the assistance of Sara Smith, Jacqui Hansson, Simon Rotherham, Catherine Neelamraju, Tara Wolfe and Daniel Guinea from the Seqwater team for co-ordination of sampler deployment and retrieval. Direct Enquiries to: Dr. Sarit Kaserzon The University of Queensland National Research Centre for Environmental Toxicology (Entox) 39 Kessels Rd Brisbane, Qld 4108 Phone: +61 (0)428 532 053 Fax: +61 (0)7 3274 9003 Email: [email protected] Web: www.entox.uq.edu.au 2 national research centre for environmental toxicology Entox is a joint venture between The University of Queensland and Queensland Health Table of Contents Table of Contents .............................................................................................................................................................. 3 List of Tables ..................................................................................................................................................................... 5 List of Figures .................................................................................................................................................................... 5 Executive Summary ........................................................................................................................................................... 7 1. Introduction .............................................................................................................................................................. 8 2. Methodology ............................................................................................................................................................. 9 3. Sampler Preparation ............................................................................................................................................... 12 3.1 Passive Flow Monitors (PFMs) - preparation .................................................................................................. 12 3.2 Empore Disks (EDs) - preparation and extraction ........................................................................................... 12 3.3 HLB Clean Up of Empore Disk Extracts ........................................................................................................... 13 3.4 Polydimethylsiloxane (PDMS) - preparation and extraction .......................................................................... 13 4. Analytical methods ................................................................................................................................................. 15 4.1 LC/MS/MS-QQQ - Polar herbicides and PPCP analysis ................................................................................... 15 4.2 LC/MS/MS-QToF – Non-target polar herbicides and PPCP analysis ............................................................... 15 4.3 GC/HRMS – OCP and PAH analysis .................................................................................................................. 15 5. Data modelling and reporting of results ................................................................................................................. 17 5.1 Calculations of water concentrations from chemicals accumulated in passive samplers .............................. 17 5.2 Calculation of site specific sampling rates for polar chemicals ...................................................................... 17 5.3 Quality control and assurance procedures ..................................................................................................... 19 6. Results ..................................................................................................................................................................... 21 6.1 PFM results ..................................................................................................................................................... 21 6.2 Chemical analysis results ................................................................................................................................ 22 6.3 OCPs ................................................................................................................................................................ 24 6.4 PAHs ................................................................................................................................................................ 26 6.5 Herbicides and insecticides ............................................................................................................................. 28 6.6 PPCPs ............................................................................................................................................................... 31 6.7 Event Sampling ................................................................................................................................................ 33 6.8 Seasonal comparison ...................................................................................................................................... 34 6.9 Analysis of non-target polar chemicals ........................................................................................................... 38 7. Discussion ................................................................................................................................................................ 39 7.1 OCPs ................................................................................................................................................................ 39 7.2 PAHs ................................................................................................................................................................ 40 7.3 Herbicides ....................................................................................................................................................... 40 7.4 PPCPs ............................................................................................................................................................... 41 7.5 Comparison to water quality guidelines values .............................................................................................. 42 7.6 Event sampling and seasonal variation ........................................................................................................... 42 3 national research centre for environmental toxicology Entox is a joint venture between The University of Queensland and Queensland Health 7.7 Future Recommendations............................................................................................................................... 43 8. References .............................................................................................................................................................. 44 9. Appendix 1 – ........................................................................................................................................................... 46 See enclosed excel file ‘SEQW results_summer2016_14042016.xls .............................................................................. 46 10. Appendix 2 .............................................................................................................................................................. 47 4 national research centre for environmental toxicology Entox is a joint venture between The University of Queensland and Queensland Health List of Tables Table 1 Deployment locations, dates and lengths of deployment periods and water velocity measured at each site . 10 Table 2 Relative proportions to reference Rs (Atrazine) ................................................................................................ 18 Table 3 Summary of the number of chemicals accumulated in PDMS, percent of detection (%) at the sites and the range of mass accumulated over 28 days (ng PDMS-1) ................................................................................................... 22 Table 4 Summary of the number of chemicals accumulated in EDs, percent of detection (%) at the sites and the range of mass accumulated over 28 days (ng ED-1). (*) Indicates new chemical ..................................................................... 23 Table 5 Guidelines for Australian Drinking Water and Freshwater Aquatic Ecosystems ............................................... 42 List of Figures Figure 1 PFMs prior to deployment (left) and after deployment (right) ........................................................................ 12 TM Figure 2 Assembly of Empore Disk polar sampler ....................................................................................................... 13 Figure 3 PDMS strips prepared for deployment in the field in stainless mesh cages ..................................................... 14 Figure 4 PFM based average flow rate estimations at the deployment sites ...............................................................
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