Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary, China

	Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary, China
	Lu Yuxi 1; Pan Dawei2 ; Yang Tingting 3; Wang Chenchen 2
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
	2023
卷号	41 期号:1 页码:150-165
关键词	colloidal heavy metal size fraction Huanghe (Yellow) River estuary geochemical feature
英文摘要	The geochemical characteristics and potential controlling factors of colloidal Zn, Cd, and Pb in Huanghe (Yellow) River estuary (HRE), China were investigated. The three metals were highly variable over a range of spatiotemporal scales, comprehensively forced by various physical and biological processes. Total dissolved Zn, Cd, and Pb varied from 200.1 to 321.7, 2.6 to 4.1, and 0.5 to 1.0 nmol/L, respectively. Only one near-estuarine station of Zn had contamination factor values >1, which indicate the lower contaminant levels. Five dissolved species of Zn, Cd and Pb were fractionated, namely <1 kDa, 1-3 kDa, 3-10 kDa, 10-100 kDa, and 100 kDa-0.45 μm. The <1 kDa truly dissolved phase was the main fraction of the three dissolved metals (50%-62%), while the 100-kDa-0.45-μm high molecular weight colloidal fraction was dominant in their respective colloidal phase. Territorial input and sediment acted as important sources of strong ligands and natural colloids for the HRE water system. <3-kDa Zn and Pb were susceptible to the dissolved oxygen, the behaviors of colloidal Zn and 3-10-kDa Pb were related to dissolved organic carbon (DOC). However, no significant correlation between each dissolved fraction of Cd and salinity, pH, temperature, colloidal organic carbon, and DOC was found in this study. Overall, these findings, completed by the evaluation of the dissolved species of Zn, Cd, and Pb at 10 sites over the river-sea mixing zone, provided new insights into the colloidal heterogeneity that affect metals geochemical features, migration and fate in estuaries.
语种	英语
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/36428
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
作者单位	1.中国科学院海洋研究所 2.中国科学院烟台海岸带研究所 3.烟台大学
推荐引用方式 GB/T 7714	Lu Yuxi,Pan Dawei,Yang Tingting,et al. Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary, China[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2023,41(1):150-165.
APA	Lu Yuxi,Pan Dawei,Yang Tingting,&Wang Chenchen.(2023).Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary, China.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,41(1),150-165.
MLA	Lu Yuxi,et al."Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary, China".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 41.1(2023):150-165.