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Multicompartment and cross-species monitoring of contaminants of emerging concern in an estuarine habitat.

Miller, Thomas H and Ng, Keng Tiong and Lamphiere, Aaron and Cameron, Tom C and Bury, Nicolas R and Barron, Leon P (2021) 'Multicompartment and cross-species monitoring of contaminants of emerging concern in an estuarine habitat.' Environmental Pollution, 270. p. 116300. ISSN 0269-7491

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The fate of many chemicals in the environment, particularly contaminants of emerging concern (CEC), have been characterised to a limited extent with a major focus on occurrence in water. This study presents the characterisation, distribution and fate of multiple chemicals including pharmaceuticals, recreational drugs and pesticides in surface water, sediment and fauna representing different food web endpoints in a typical UK estuary (River Colne, Essex, UK). A comparison of contaminant occurrence across different benthic macroinvertebrates was made at three sites and included two amphipods (Gammarus pulex &Crangon crangon), a polychaete worm (Hediste diversicolor) and a gastropod (Peringia ulvae). Overall, multiple contaminants were determined in all compartments and ranged from; <LOQ - 386 ng L<sup>-1</sup> in surface water (n = 59 compounds), <LOQ - 146 ng g<sup>-1</sup> in sediment (n = 39 compounds) and <LOQ - 91 ng g<sup>-1</sup> biota (n = 33 compounds). H. diversicolor and P. ulvae (sediment dwellers) showed greater chemical body burden compared with the two swimming amphipod species sampled (up to 2.5 - 4-fold). The most frequently determined compounds in biota (100%, n = 36 samples) included; cocaine, benzyoylecgonine, carbamazepine, sertraline and diuron. Whilst some of the highest concentrations found were in species H. diverscolor and P. ulvae for psychoactive pharmaceuticals including citalopram (91 ng g<sup>-1</sup>), sertraline (69 ng g<sup>-1</sup>), haloperidol (66 ng g<sup>-1</sup>) and the neonicotinoid, imidacloprid (33 ng g<sup>-1</sup>) Sediment was noted as an important exposure route for these benthic dwelling organisms and will be critical to monitor in future studies. Overall, the analysis of multiple species and compartments demonstrates the importance of including a range of exposure pathways in order to appropriately assess chemical fates and associated risks in the aquatic environment.

Item Type: Article
Uncontrolled Keywords: Animals; Pesticides; Water Pollutants, Chemical; Ecosystem; Rivers; Environmental Monitoring
Divisions: Faculty of Science and Health
Faculty of Science and Health > Life Sciences, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 14 Dec 2021 13:44
Last Modified: 06 Jan 2022 14:20

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