期刊
MARINE POLLUTION BULLETIN
卷 146, 期 -, 页码 393-398出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.06.078
关键词
Polyhalogenated carbazoles (PHCZs); Jiaozhou Bay wetland; Sediment; Ecotoxicological effects
资金
- Deep Sea Biological Resources Program [DY135-B2-11]
- National Key R&D Program of China [2018YFC0310701]
- Basic Scientific Fund for National Public Research Institutes of China [2016Q07]
- National Natural Science Foundation of China [41807499]
A suite of eight polyhalogenated carbazole (PHCZ) congeners were detected in sediments of the Jiaozhou Bay wetland. 3,6-dichlorocarbazole (36-CCZ), and 3,6-dibromocarbazole (36-BCZ) were detected in all samples. The concentrations of Sigma PHCZs ranged from 6.9 to 33.4 ng/g dry weight (dw). The recovery of surrogate standard ranged from 85 to 109%. Significant relationships were found between the concentrations of 36-CCZ and those of the other three detected compounds (36-BCZ, 36-ICZ, and 1368-BCZ). However, with regard to the other chemicals, only 1368-BCZ was related to 36-ICZ. The toxic equivalent (TEQ) was used to assess the relative toxicity of PHCZs, which ranged within 0.1-3.9 pg TEQ/g dw in sediment. The inventory of Sigma PHCZs was 58.9 kg. These results indicate that PHCZs are widely distributed in the Jiaozhou wetland and the dyeing and finishing industries may be important contamination sources of PHCZs.
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