Download
1 / 10
100 likes | 221 Views
37. ??. ??. . ??. WG 3: Impact assessment. 9 members – good discussions Xenobiotics in the Urban Water Cycle. COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005. 37. WG 3 – Impacts and assessment area. Impacts
E N D
37 ?? ?? ?? WG 3: Impact assessment • 9 members – good discussions • Xenobiotics in the Urban Water Cycle COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 WG 3 – Impacts and assessment area • Impacts • adverse effects on ecosystems and humans induced by xenobiotics • Assessment area – urban water • wastewater • municipal • industrial? • hospital? • stormwater • surface water • groundwater • drinking water • ”recreational” water • bathing water • recycling water • ”who” is impacted? who is hit (target/non-target) COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 Xenobiotics? Man-made chemicals or materials not produced in nature and not normally considered a constituent component of a specified biological system. The term is usually applied to manufactured chemicals. (Van Leeuwen & Hermens, 1995) COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 WG 3 – xenobiotics • Xenobiotics covered by WG3 • man-made chemicals in ”forms” or amounts not normally found in nature • xenobiotic organic compounds • heavy metals • strong urban source • input FROM urban areas WG1 • background concentrations.... • Chemicals • grouping/tracers (use, chemical structure, distribution) matrix WG 1 (source) • priority pollutants (e.g. WFD) COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 WFD in WG 3 • the legal frame • but not scientific • retrospective... not proactive • toolbox-development • stakeholders as driving force • groundwater – surface water interaction • ecotoxicological status vs ecological status • threshold limit values across Europe WFD WG3 COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 Long-term objective for WG3 • Conceptual framework for impact assessment for xenobitics in the urban water cycle • Biotests as analytical tool • Are we measuring the right thing? • Common research project... • Marie Curie proposal... COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 Action plan 2006-2008 • Plan for 2006 • Meeting in March/April 2006 – in Luxembourg (??) • WG3 in Freiburg in Oct 2006 (only WG3!!) • Activities 2007 & 2008 • Themes – 2 meeting/yr • Conceptual framework – building blocks • Activities between meetings • Before 1st meeting: Background papers • what’s the status of applying biotests for impact assessment around Europe (and North America) (draft by Zita Vosyliené) • state-of-the-art for complex mixture assessment (Sureyya Meric) • impact assessment relation to WFD (Verena Höckele) • overview of the ”impact assessment” expertises within the group – 3-4 lines of expertises, key publication, test methods available, ongoing project (Anders Baun provide outline, collects input, write intro) • Identification opportunities for exchange of human resources • Identification of common topics for training courses COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 Themes in 20061st meeting Impact thresholds in the environment & humans • methods from molecular level whole organisms ecosystem • which methods exist? state-of-the-art • what do they tell us? • do we really use the appropriate methods to evaluate the impacts we are interested in • do we have the methods for this? • do we have the relevant expertises represented in WG3 • going beyond what we take for granted ... ways of evaluating results (e.g. statistical significance) • link to WFD? COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
37 Themes in 20062nd meeting Complex composition – how is dealt with in different countries? • Impact of the whole sample is the only relevant thing...!? • WET – whole effluent testing – not only xenobiotics give rise to adverse effects • Chem. anal. vs effects • TIE – Toxicity Identification Evaluation • Groupwise fractionation techiques • Source tracking – gaining knowledge about composition • Treatment efficiency – tox before and after cleaning WG2 • Concentrations – continous discharge vs. intermittent discharges COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
Bioavailability – exposure concentration chemical vs biological methods By-products, degradation products, metabolites Existing bioassays for monitoring discharges – WFD Human toxicology – drinking water issues Water vs sediments Risk management Urban area – defined by space or activities? Test batteries Ring testing – biological and chemical... not in WG3 Sinks – long-term vs. short-term storage WG1 dynamics Training courses/schools QA/QC Particles Scales average human vs. ecosystem (”½ pregnant woman”) dilution does the tests/chem analyses make sense? site specific vs. generic spatial temporal extrapolation uncertainty How to select chemicals? task force with members from WG1-4 largest possible list? national lists of PP How to choose methods? 37 2007-2008WG 3 – list of ”discussion words” COST 636 Xenobiotics in the Urban Water Cycle – Kick-off meeting DTU 7-9 Sept. 2005
