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Characterisation and comparison of the uptake of ionizable and polar pesticides, pharmaceuticals and personal care products by POCIS and Chemcatchers
Kaserzon, S.L.; Hawker, D.W.; Kennedy, K.; Bartkow, M.; Carter, S.; Booij, K.; Mueller, J.F. (2014). Characterisation and comparison of the uptake of ionizable and polar pesticides, pharmaceuticals and personal care products by POCIS and Chemcatchers. Environ. Sci. Process. Impacts 11: 2517–2526. dx.doi.org/10.1039/c4em00392f
In: Environmental Science: Processes & Impacts. RSC Publishing: Cambridge. ISSN 2050-7887; e-ISSN 2050-7895, meer
Peer reviewed article  
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  • Kaserzon, S.L.
  • Hawker, D.W.
  • Kennedy, K.
  • Bartkow, M.
  • Carter, S.
  • Booij, K., meer
  • Mueller, J.F.
Abstract
    Growing concern about the environmental impact of ionizable and polar organic chemicals such as pesticides, pharmaceuticals and personal care products has lead to the inclusion of some in legislative and regulatory frameworks. It is expected that future monitoring requirements for these chemicals in aquatic environments will increase, along with the need for low cost monitoring and risk assessment strategies. In this study the uptake of 13 neutral and 6 ionizable pesticides, pharmaceuticals and personal care products by modified POCIS (with Strata™-X sorbent) and Chemcatchers™ (SDB-RPS or SDB-XC) was investigated under controlled conditions at pH = 6.5 for 26 days. The modified POCIS and Chemcatcher™ (SDB-RPS) samplers exhibited similar performance with the uptake of the majority of the 19 chemicals of interest categorised as linear over the 26 day deployment. Only a few ionized herbicides (picloram and dicamba) and triclosan showed negligible accumulation. Chemcatcher™ with SDB-XC sorbent performed relatively poorly with only carbamazepine having a linear accumulation profile, and 8 compounds showing no measurable accumulation. Differences in the uptake behavior of chemicals were not easily explained by their physico-chemical properties, strengthening the requirement for detailed calibration data. PES membranes accumulated significant amount of some compounds (i.e. triclosan and diuron), even after extended deployment (i.e. 26 days). At present there is no way to predict which compounds will demonstrate this behavior. Increasing membrane pore size from 0.2 to 0.45 µm for Chemcatcher™ (SBD-RPS) caused an average increase in Rs of 24%.
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