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中国太湖中铜、锌、镉和铬的营养级转移及食物网的生物标志物响应。

Trophic transfer of Cu, Zn, Cd, and Cr, and biomarker response for food webs in Taihu Lake, China.

作者信息

Zuo Jinxing, Fan Wenhong, Wang Xiaolong, Ren Jinqian, Zhang YiLin, Wang Xiangrui, Zhang Yuan, Yu Tao, Li Xiaomin

机构信息

School of Space and Environment, Beihang University No. 37, XueYuan Road, HaiDian District Beijing 100191 PR China

Chinese Research Academy of Environmental Sciences Beijing 100012 PR China.

出版信息

RSC Adv. 2018 Jan 17;8(7):3410-3417. doi: 10.1039/c7ra11677b. eCollection 2018 Jan 16.

DOI:10.1039/c7ra11677b
PMID:35542949
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9077756/
Abstract

Water, sediments, and aquatic organism samples were collected from Taihu Lake in China. Four types of typical heavy metal (Cu, Zn, Cd, and Cr) were analyzed to evaluate their concentrations and trophic transfer in food webs. The stable nitrogen isotope δN was used to investigate the trophic interactions. The concentrations of Cd and Zn in the sediments of Taihu Lake exceeded Level I of the China National Quality Standards for Soil. Zn accumulation was identified to increase with the trophic level. The bioconcentration of the four heavy metals in aquatic organisms was evident, with the invertebrates showing the highest bioconcentration factor in the food webs. Several biomarkers were investigated, including metallothionein (MT), malondialdehyde, and Na/K-adenosine triphosphatase activity. A positive correlation relationship was found between the MT content and heavy metal accumulation in organism tissues.

摘要

从中国太湖采集了水、沉积物和水生生物样本。分析了四种典型重金属（铜、锌、镉和铬），以评估它们在食物网中的浓度和营养转移情况。利用稳定氮同位素δN来研究营养相互作用。太湖沉积物中镉和锌的浓度超过了中国土壤质量国家标准一级标准。已确定锌的积累随营养级升高而增加。四种重金属在水生生物中的生物富集现象明显，其中无脊椎动物在食物网中表现出最高的生物富集系数。研究了几种生物标志物，包括金属硫蛋白（MT）、丙二醛和钠钾-三磷酸腺苷酶活性。发现生物组织中MT含量与重金属积累之间存在正相关关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9da2/9077756/1a2f429e78c1/c7ra11677b-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9da2/9077756/50c9c4d78def/c7ra11677b-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9da2/9077756/1a2f429e78c1/c7ra11677b-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9da2/9077756/50c9c4d78def/c7ra11677b-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9da2/9077756/1a2f429e78c1/c7ra11677b-f2.jpg

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