Calibration of the Chemcatcher ® passive sampler for monitoring selected polar and semi-polar pesticides in surface water
Research output: Journal contributions › Journal articles › Research › peer-review
Authors
Passive sampling is a powerful method for continuous pollution monitoring, but calibration experiments are still needed to generate sampling rates in order to estimate water concentrations for polar compounds. We calibrated the Chemcatcher ® device with an uncovered SDB-XC Empore disk as receiving phase for 12 polar and semi-polar pesticides in aquatic environments in flow-through tank experiments at two water flow velocities (0.135 m/s and 0.4 m/s). In the 14-day period of exposure the uptake of test substances in the sampler remained linear, and all derived sampling rates R s were in the range of 0.1 to 0.5 L/day. By additionally monitoring the release of two preloaded polar pesticides from the SDB-XC disks over time, very high variation in release kinetics was found, which calls into question the applicability of performance reference compounds. Our study expands the applicability of the Chemcatcher ® for monitoring trace concentrations of pesticides with frequent occurrence in water.
| Original language | English |
|---|---|
| Journal | Environmental Pollution |
| Volume | 155 |
| Issue number | 1 |
| Pages (from-to) | 52-60 |
| Number of pages | 9 |
| ISSN | 0269-7491 |
| DOIs | |
| Publication status | Published - 01.09.2008 |
Bibliographical note
Funding Information:
The authors are grateful to Uwe Schröter (UFZ) for help with the experimental work. Furthermore, we are indebted to Richard Greenwood and Graham Mills (University of Portsmouth, UK) for providing us with the Chemcatcher ® bodies, and to Branislav Vrana (University of Portsmouth) for helpful information. R.B.S. received funding from the “Studienstiftung des deutschen Volkes” (Bonn, Germany). A.P. and R.B.S. are also grateful to the British Council & German Academic Exchange Service (ARC project no. 1239) for financial support.
- Chemistry - pesticides, Passive sampling, Water, Bioavailability, Chemcatcher