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Bioaccumulation and translocation of organophosphate esters in a Mangrove Nature Reserve from the Pearl River Estuary, South China
Journal of Hazardous Materials ( IF 13.6 ) Pub Date : 2021-11-27 , DOI: 10.1016/j.jhazmat.2021.127909
Jinli Xie 1 , Nancai Pei 2 , Yuxin Sun 3 , Zhongyang Chen 2 , Yuanyue Cheng 3 , Laiguo Chen 4 , Chenmin Xie 1 , Shouhui Dai 3 , Chunyou Zhu 5 , Xiaojun Luo 5 , Li Zhang 6 , Bixian Mai 5
Affiliation  

Little is known about the distribution and bioaccumulation of organophosphate esters (OPEs) in mangrove ecosystems. In this study, water, sediments, plants and animals were collected from Qi'ao Island Mangrove Nature Reserve to investigate the levels, bioaccumulation and biomagnification of OPEs. Concentrations of ΣOPEs in the mangrove plant Sonneratia apetala (an exotic species) were greater than those in Kandelia obovata (a native species). Translocation factors of OPEs in the two mangrove tree species were greater than 1, indicating that OPEs were mainly absorbed in aboveground tissues. Concentrations of OPEs in mangrove trees and animals were negatively correlated with their log Kow, suggesting that accumulation of OPEs in mangrove biota was influenced by hydrophobicity. A significant difference for concentrations of ΣOPEs was found among the eight mangrove animal species. Concentrations of ΣOPEs in mangrove animals were related with lipid contents, feeding habits and Kow of OPEs. Biota-sediment accumulation factor of OPEs was larger than 1, suggesting that bioaccumulation of OPEs occurred in mangrove animals. The targeted OPEs except isodecyl diphenyl phosphate were not biomagnified in mangrove animals. This study highlights bioaccumulation of OPEs in mangrove biota and suggests further concern about the ecological risk of OPEs to mangrove biota.



中文翻译:

珠江口红树林自然保护区有机磷酸酯的生物蓄积与转运

关于有机磷酸酯 (OPE) 在红树林生态系统中的分布和生物积累知之甚少。本研究从七澳岛红树林自然保护区采集水体、沉积物、植物和动物,以研究 OPEs 的水平、生物积累和生物放大作用。红树林植物Sonneratia apetala (外来物种)中的 ΣOPE 浓度高于Kandelia obovata(本地物种)中的浓度。两种红树林树种OPEs的易位因子均大于1,说明OPEs主要被地上组织吸收。红树林和动物中 OPE 的浓度与其 log K ow呈负相关,表明红树林生物群中OPE的积累受疏水性的影响。在八种红树林动物物种中发现了 ΣOPEs 浓度的显着差异。红树林动物ΣOPEs的浓度与脂质含量、摄食习性和OPEs的Kow有关。OPEs的生物沉积积累因子大于1,表明OPEs的生物积累发生在红树林动物身上。除异癸基二苯基磷酸酯外,目标 OPE 在红树林动物中没有被生物放大。该研究强调了红树林生物群中 OPEs 的生物积累,并进一步关注 OPEs 对红树林生物群的生态风险。

更新日期:2021-11-27
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