Instituto de Oceanografia, Universidade Federal do Rio Grande (IO -FURG), Av. Itália s/n, Campus Carreiros, C.P. 474, 96203-900 Rio Grande, RS, Brazil; PPG em Oceanologia, Universidade Federal do Rio Grande (PPGO-FURG), Av. Itália s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
Instituto de Oceanografia, Universidade Federal do Rio Grande (IO -FURG), Av. Itália s/n, Campus Carreiros, C.P. 474, 96203-900 Rio Grande, RS, Brazil; PPG em Química Tecnológica e Ambiental, Universidade Federal do Rio Grande (PPGQTA-FURG), Av. Itália s/n, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
Mar Pollut Bull. 2021 May;166:112255. doi: 10.1016/j.marpolbul.2021.112255. Epub 2021 Mar 18.
The contamination by antifouling biocide residues (booster biocides - diuron, Irgarol, chlorothalonil, dichlofluanid and DCOIT; butyltin compounds-BTs (TBT, DBT and MBT); and antifouling paint particles-APPs) was appraised in sediments of Vitoria Estuarine System (VES). Even at its historical lower (ΣBTs ≤113 ng Sn g dry wt), the current environmental levels of BTs in areas with a predominance of boatyards still pose a risk to the local biota and human population. DCOIT, among booster biocides, was the most frequently detected, especially in boatyards (≤40 ng g dry wt) and Vitoria Port (64 ng g dry wt), while APPs were also detected mainly in sediments of boatyards (≤5,969 μg g dry wt). Since levels of diuron and DCOIT in APPs were as high as 1,670,000 and 899,000 ng g dry wt, respectively, they are acting as secondary sources of these antifouling biocides. Therefore, VES is threatened by antifouling biocide residues due to the multiple diffuse sources of contamination, showing the need for more efforts on public policies (including temporal trend monitoring studies).
本研究评估了防污杀生物剂残留（促进剂杀生物剂-敌草隆、三丁基锡、百菌清、双氯芬和 DCOIT；有机锡化合物-BTs（TBT、DBT 和 MBT）；以及防污漆颗粒-APPs）对维多利亚河口系统（VES）沉积物的污染情况。即使在历史较低水平（ΣBTs≤113ng Sn g 干重）下，船坞区当前环境中 BTs 的水平仍对当地生物群和人类构成威胁。在促进剂杀生物剂中，DCOIT 的检出频率最高，尤其是在船坞（≤40ng g 干重）和维多利亚港（64ng g 干重），而 APPs 也主要在船坞沉积物中检出（≤5969μg g 干重）。由于 APPs 中敌草隆和 DCOIT 的含量高达 1670000 和 899000ng g 干重，它们是这些防污杀生物剂的次生来源。因此，由于污染的多源性和扩散性，VES 受到防污杀生物剂残留的威胁，这表明需要在公共政策方面（包括时间趋势监测研究）做出更多努力。
