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Bull Environ Contam Toxicol. 2019 Jul;103(1):41-47. doi: 10.1007/s00128-019-02637-7. Epub 2019 May 21.

Polyhalogenated Carbazoles in Surface Sediment from Sanmen Bay, East China Sea: Spatial Distribution and Congener Profile.

Author information

1
Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou, 510632, China.
2
College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China.
3
School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, 510632, China.
4
School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, 510632, China. yxhu00@jnu.edu.cn.
5
Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou, 510632, China. yanwang7018@163.com.

Abstract

Polyhalogenated carbazoles (PHCZs) have recently emerged as a group of halogenated pollutants with broad occurrences and bioaccumulation potential in aquatic systems. However, investigations on their occurrences in coastal waters remain very limited. In the present study we investigated PHCZs in surface sediment collected from 29 sites in Sanmen Bay, East China Sea. The results demonstrated a universal presence of PHCZs in sediment, with concentrations of ∑PHCZs (including all congeners) ranging from 7.7 to 17.5 ng/g dry weight (median: 11.3 ng/g dw). The PHCZ congener composition profile revealed a dominance of 3,6-dichlorocarbazole (36-CCZ) with comparable concentration with that of carbazole. Given that PHCZs are widely distributed in Sanmen Bay sediment and their concentrations rivaled other well-known persistent organic pollutants in the same area, this group of halogenated pollutants merits additional investigations of their potential risks to the studied aquatic system, as well as other important watersheds.

KEYWORDS:

Congener profile; Polyhalogenated carbazoles; Sanmen Bay; Sediment; Spatial distribution

PMID:
31115585
DOI:
10.1007/s00128-019-02637-7
[Indexed for MEDLINE]

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