Separation and determination of colloidal trace metals in seawater by cross-flow ultrafiltration, liquid-liquid extraction and ICP-MS
Lu, YX; Gao, XL; Chen, CTA
Source PublicationMARINE CHEMISTRY
ISSN0304-4203
2019-09-20
Volume215Pages:UNSP 103685
KeywordColloidal trace metals Seawater Pre-concentration Inductively coupled plasma mass spectrometry
MOST Discipline CatalogueChemistry, Multidisciplinary ; Oceanography
DOI10.1016/j.marchem.2019.103685
Contribution Rank[Lu, Yuxi; Gao, Xuelu] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Lu, Yuxi; Gao, Xuelu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chen, Chen-Tung Arthur] Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
Corresponding AuthorGao, Xuelu(xlgao@yic.ac.cn)
Department海岸带信息集成与综合管理实验室
AbstractIn this study, a method was developed for the desalination and pre-concentration of three colloidal trace metals in seawater, namely Cd, Cu and Pb, using diethylammonium diethyldithiocarbamate and ammonium 1-pyrrolidine dithiocarbamate as chelates. Seawater samples were first treated with cross-flow ultrafiltration (CFUF) for the separation of the colloidal matter of different molecular weights, i.e. 1-3 kDa, 3-10 kDa and 10 kDa-0.22 mu m. Then, after acid digestion, the organic chelates and the extracting agent chloroform were added at pH = 3.8. Finally, the organic phase was back extracted, and the target metals in all samples were measured using inductively coupled plasma mass spectrometry (ICP-MS) with low detection limits in the range of 0.13-1.18 pmol L-1. The extraction efficiencies for the three metals were in the range of 92.2%-100.3% with an enrichment factor of 40, and their mass recoveries in the studied colloidal fractions were in the range of 83.1%-103.5%. The developed method has been successfully applied for the analysis of seawater samples collected from the sites off the south coast of North Yellow Sea in Shandong Peninsula, China. For the first time, the distribution of colloidal Cd, Cu and Pb in different molecular weights in this area is reported. The results obtained from real samples demonstrate that the developed method is simple, efficient and convenient for routine analysis with low detection limit.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordORGANIC-CARBON ; AQUATIC COLLOIDS ; HEAVY-METALS ; MARINE COLLOIDS ; SPECIATION ; BAY ; NANOPARTICLES ; BEHAVIOR ; SURFACE ; DISTRIBUTIONS
WOS Research AreaChemistry, Multidisciplinary ; Oceanography
Funding ProjectNational Natural Science Foundation of China[41376083] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303]
WOS IDWOS:000484876200005
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China [41376083] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA23050303]
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24857
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
Recommended Citation
GB/T 7714
Lu, YX,Gao, XL,Chen, CTA. Separation and determination of colloidal trace metals in seawater by cross-flow ultrafiltration, liquid-liquid extraction and ICP-MS[J]. MARINE CHEMISTRY,2019,215:UNSP 103685.
APA Lu, YX,Gao, XL,&Chen, CTA.(2019).Separation and determination of colloidal trace metals in seawater by cross-flow ultrafiltration, liquid-liquid extraction and ICP-MS.MARINE CHEMISTRY,215,UNSP 103685.
MLA Lu, YX,et al."Separation and determination of colloidal trace metals in seawater by cross-flow ultrafiltration, liquid-liquid extraction and ICP-MS".MARINE CHEMISTRY 215(2019):UNSP 103685.
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