| 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
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| 发表期刊 | MARINE CHEMISTRY
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| ISSN | 0304-4203 |
| 2019-09-20 | |
| 卷号 | 215页码:UNSP 103685 |
| 关键词 | Colloidal trace metals Seawater Pre-concentration Inductively coupled plasma mass spectrometry |
| 研究领域 | Chemistry, Multidisciplinary ; Oceanography |
| DOI | 10.1016/j.marchem.2019.103685 |
| 产权排序 | [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 |
| 通讯作者 | Gao, Xuelu(xlgao@yic.ac.cn) |
| 作者部门 | 海岸带信息集成与综合管理实验室 |
| 英文摘要 | In 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. |
| 文章类型 | Article |
| 资助机构 | National 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] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | ORGANIC-CARBON ; AQUATIC COLLOIDS ; HEAVY-METALS ; MARINE COLLOIDS ; SPECIATION ; BAY ; NANOPARTICLES ; BEHAVIOR ; SURFACE ; DISTRIBUTIONS |
| 研究领域[WOS] | Chemistry, Multidisciplinary ; Oceanography |
| WOS记录号 | WOS:000484876200005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24857 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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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