The distribution and speciation of dissolved Cd and Pb in the Bohai Sea and Yellow Sea, China

被引：2
|
作者：
Ren, Yijun [1 ]
Wang, Xiaojing [1 ,2 ]
Zhang, Cuiqin [1 ,3 ]
Liu, Jihua [1 ,2 ]
Shi, Xuefa [1 ,2 ]
Li, Li [1 ,2 ]
机构：
[1] Minist Nat Resources, Key Lab Marine Geol & Metallogeny, Inst Oceanog 1, Qingdao 266061, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine, Qingdao 266061, Peoples R China
[3] Educ Methodol Newspaper Co Ltd, Yulin, Shanxi, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2023年 / 186卷
基金：
中国国家自然科学基金;
关键词：
Trace metals; Speciation; Toxicity; Bohai Sea; Yellow Sea; TRACE-METAL DISTRIBUTIONS; CU-COMPLEXING LIGANDS; COPPER COMPLEXATION; ORGANIC-MATTER; MARINE-PHYTOPLANKTON; CHEMICAL SPECIATION; SURFACE WATERS; CADMIUM; LEAD; COASTAL;
D O I：
10.1016/j.marpolbul.2022.114437
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The speciation of dissolved trace metals is important due to its closely linkage with toxicity and bioavailability in seawater. We investigate the speciation of dissolved Pb (DPb) and Cd (DCd), and their spatial distributions in the Yellow Sea and Bohai Sea, China. The results showed that the organic complexation of DPb and DCd accounted for 35 +/- 14 % and 75 +/- 10 % of their dissolved concentrations, respectively. The measured free ion activity of Cd ({Cd2 +}) and organic ligand concentration of Cd ([LCd]) were highest near the Yellow River mouth, where the free ion activity of Pb ({Pb2+}) were also found to be the highest. In this study, both {Pb2+} and {Cd2+} did not exceed the toxicity threshold, and they were identified not toxic in the waters of the Yellow Sea and Bohai Seas, but biological accumulation effects potentially exist.
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页数：10
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