PMID- 30995592 OWN - NLM STAT- MEDLINE DCOM- 20190710 LR - 20190710 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 227 DP - 2019 Jul TI - Halogenated flame retardants in mangrove sediments from the Pearl River Estuary, South China: Comparison with historical data and correlation with microbial community. PG - 315-322 LID - S0045-6535(19)30722-2 [pii] LID - 10.1016/j.chemosphere.2019.04.075 [doi] AB - 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. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Hu, Yongxia AU - Hu Y AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China. FAU - Pei, Nancai AU - Pei N AD - Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China. FAU - Sun, Yuxin AU - Sun Y AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China. Electronic address: sunyx@scsio.ac.cn. FAU - Xu, Xiangrong AU - Xu X AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China. FAU - Zhang, Zaiwang AU - Zhang Z AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China. FAU - Li, Huawei AU - Li H AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China; University of Chinese Academy of Sciences, Beijing, 100049, China. FAU - Wang, Weiwei AU - Wang W AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China; University of Chinese Academy of Sciences, Beijing, 100049, China. FAU - Zuo, Linzi AU - Zuo L AD - CAS Key Laboratory of Tropical Marine Bio-resources and Ecology; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology; Chinese Academy of Sciences, Guangzhou, 510301, China. FAU - Xiong, Yanmei AU - Xiong Y AD - Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China. FAU - Zeng, Yanhong AU - Zeng Y AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. FAU - He, Kehong AU - He K AD - Qi'ao Island Mangrove Nature Reserve, Zhuhai, 519080, China. FAU - Mai, Bixian AU - Mai B AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. LA - eng PT - Journal Article DEP - 20190411 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Flame Retardants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Polycyclic Compounds) RN - 0 (dechlorane plus) SB - IM MH - China MH - Environmental Monitoring/*methods MH - *Estuaries MH - Flame Retardants/*analysis/pharmacology MH - Halogenated Diphenyl Ethers/*analysis MH - Halogenation MH - Hydrocarbons, Chlorinated/analysis MH - Microbiota/*drug effects MH - Polycyclic Compounds/analysis MH - Rivers MH - *Wetlands OTO - NOTNLM OT - Halogenated flame retardants OT - Mangrove sediments OT - Microbial community OT - Pearl River Estuary OT - Spatial distribution OT - Temporal trend EDAT- 2019/04/18 06:00 MHDA- 2019/07/11 06:00 CRDT- 2019/04/18 06:00 PHST- 2019/01/26 00:00 [received] PHST- 2019/04/09 00:00 [revised] PHST- 2019/04/10 00:00 [accepted] PHST- 2019/04/18 06:00 [pubmed] PHST- 2019/07/11 06:00 [medline] PHST- 2019/04/18 06:00 [entrez] AID - S0045-6535(19)30722-2 [pii] AID - 10.1016/j.chemosphere.2019.04.075 [doi] PST - ppublish SO - Chemosphere. 2019 Jul;227:315-322. doi: 10.1016/j.chemosphere.2019.04.075. Epub 2019 Apr 11.