Halogenated flame retardants in mangrove sediments from the Pearl River Estuary, South China: Comparison with historical data and correlation with microbial community

被引：33
作者：
Hu, Yongxia [1 ,2 ,3 ]
Pei, Nancai [4 ]
Sun, Yuxin [1 ,2 ,3 ,5 ]
Xu, Xiangrong [1 ,2 ,3 ,5 ]
Zhang, Zaiwang [1 ,2 ,3 ]
Li, Huawei [1 ,2 ,3 ,8 ]
Wang, Weiwei [1 ,2 ,3 ,8 ]
Zuo, Linzi [1 ,2 ,3 ]
Xiong, Yanmei [4 ]
Zeng, Yanhong [6 ]
He, Kehong [7 ]
Mai, Bixian [6 ]
机构：
[1] South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
[2] South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, Guangzhou 510301, Guangdong, Peoples R China
[3] Chinese Acad Sci, Guangzhou 510301, Guangdong, Peoples R China
[4] Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China
[5] Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou 510301, Guangdong, Peoples R China
[6] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
[7] Qrao Isl Mangrove Nat Reserve, Zhuhai 519080, Peoples R China
[8] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHEMOSPHERE | 2019年 / 227卷
基金：
中国国家自然科学基金;
关键词：
Halogenated flame retardants; Mangrove sediments; Spatial distribution; Temporal trend; Microbial community; Pearl River Estuary; POLYBROMINATED DIPHENYL ETHERS; DECHLORANE PLUS; ECOLOGICAL RISKS; HEXABROMOCYCLODODECANE; PBDES; PROFILES; TETRABROMOBISPHENOL; CONTAMINATION; ACCUMULATION; ENVIRONMENT;
D O I：
10.1016/j.chemosphere.2019.04.075
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE), 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), tetrabromobisphenol A (TBBPA), hexabromocyclododecane (HBCDD) and dechlorane plus (DP) were measured in sediments collected from three mangrove wetlands of the Pearl River Estuary (PRE) in South China. This study aims to investigate the distribution of these halogenated flame retardants (HFRs) and the correlations between HFRs and microbial community structure in mangrove sediments. Concentrations of PBDEs, DBDPE, BTBPE, TBBPA, HBCDD and DP in mangrove sediments ranged from 6.97 to 216.1, 3.70-26.0, 0.02-0.73, 0.02-37.5, 0.44-127.5 and 0.07-2.23 ng/g dry weight, respectively. Higher levels of PBDEs, BTBPE, HBCDD and DP were observed in sediments from Futian mangrove wetland of Shenzhen, the only nature reserve located in the downtown of China. The highest concentration of TBBPA found in mangrove sediments from Guangzhou was proximate to a ferry terminal and a dockyard where TBBPA is widely used in the coatings. PBDEs were the predominant HFRs in mangrove sediments, with an average contribution of 63.0%. Mangrove sediments from Guangzhou and Zhuhai showed an enrichment of (-)-alpha-HBCDD, (-)-beta-HBCDD and (-)-gamma-HBCDD. Concentrations of HFRs in mangrove sediments from Guangzhou increased significantly from 2012 to 2015, which was probably due to the establishment and rapid development of Nansha Free Trade Zone of Guangzhou. Redundancy analysis showed that HFRs may cause a shift of microbial community structure in mangrove sediments and the variations were significantly correlated with TBBPA, syn-DP and BTBPE. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：315 / 322
页数：8
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