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

IOCAS-IR

	Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary,China
	Yuxi LU ; Dawei PAN ; Tingting YANG; Chenchen WANG
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2023-01-15
出版年	2023
卷号	v.41 期号:01 页码:152-167
文献类型	CNKI期刊论文
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.
关键词	colloidal heavy metal size fraction Huanghe(Yellow) River estuary geochemical feature
CNKI专辑号	A;B;
CNKI专辑名称	基础科学;工程科技Ⅰ辑;
CNKI专题号	A010;B027;
CNKI专题名称	海洋学;环境科学与资源利用;
分类号	X522;X55
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Original Innovation Project (No. ZDBS-LY-DQC009) ; the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB42000000) ; the National Key R&D Program of China (No. 2019YFD0901103)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187206
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.CASKeyLaboratoryofCoastalEnvironmentalProcessesandEcologicalRemediation,ShandongKeyLaboratoryofCoastalEnvironmentalProcesses,ResearchCenterforCoastalEnvironmentEngineeringTechnologyofShandongProvince,YantaiInstituteofCoastalZoneResearch,ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences 4.CollegeofChemistryandChemicalEngineering,YantaiUniversity
推荐引用方式 GB/T 7714	Yuxi LU,Dawei PAN,Tingting YANG,et al. Distribution characteristics and controlling factors of typical heavy metals in Huanghe River estuary,China. 2023.