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Bioaccumulation and cycling of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in three mangrove reserves of south China
Qiu, Yao-Wen; Qiu, Han-Lin; Zhang, Gan1; Li, Jun1
2019
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume217Pages:195
AbstractTotal 22 organochlorine pesticides (OCPs) compounds and 31 polychlorinated biphenyls (PCBs) congeners in mangrove sediments and tissues (leaf, branch, root and fruit) of nine species from three Mangrove Reserves of China were studied. The mean concentrations of total DDTs, HCHs, OCPs and PCBs in sediments were 2.84, 0.06, 3.84 and 0.17 ng g(-1) dw, while those in tissues were 1.85, 0.22, 9.43 and 1.61 ng g(-1) dw, respectively. The elevated OCPs and PCBs levels in mangrove leaves may be caused by atmospheric sedimentation. The biota sediment accumulation factor (BSAF) values of both OCPs (mean: 3.4) and PCBs (mean: 9.9) are generally larger than one, implying mangroves' bioaccumulation and their ability to intercept pollutants. The BSAFs of PCBs in mangrove tissues were negatively correlated with the PCB congener's octanol-water partition coefficients (K-ow, R = 0.58, n =31, p < 0.001), suggesting that lower chlorinated CB congeners are more bioaccumulative in mangroves. In order to better understanding the fate of these organochlorine compounds, the cycling (including the standing accumulation, the annual absorption, the annual net retention, the annual return, and the turnover period) of OCPs and PCBs in the Mangrove Reserves were estimated, and the results indicated that mangroves are playing important roles in retaining OCPs and PCBs. (C) 2018 Elsevier Ltd. All rights reserved.
DepartmentLTO
KeywordDDTs Organochlorine pesticides (OCPs) Polychlorinated biphenyls (PCBs) Mangrove Bioaccumulation Cycling
DOI10.1016/j.chemosphere.2018.10.188
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17772
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
3.Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Qiu, Yao-Wen,Qiu, Han-Lin,Zhang, Gan,et al. Bioaccumulation and cycling of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in three mangrove reserves of south China[J]. CHEMOSPHERE,2019,217:195, 203.
APA Qiu, Yao-Wen,Qiu, Han-Lin,Zhang, Gan,&Li, Jun.(2019).Bioaccumulation and cycling of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in three mangrove reserves of south China.CHEMOSPHERE,217,195.
MLA Qiu, Yao-Wen,et al."Bioaccumulation and cycling of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in three mangrove reserves of south China".CHEMOSPHERE 217(2019):195.
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