| Dithizone-functionalized C-18 online solid-phase extraction-HPLC-ICP-MS for speciation of ultra-trace organic and inorganic mercury in cereals and environmental samples | |
Wang, Ying ; Zhu, Ailing; Fang, Yingying; Fan, Changjun; Guo, Yanli; Tan, Zhiqiang; Yin, Yongguang; Cai, Yong; Jiang, Guibin
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| 2022-05 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
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| ISSN | 1001-0742 |
| Volume | 115Issue:0Pages:403-410 |
| Abstract | A simple and efficient dithizone-functionalized solid-phase extraction (SPE) procedure, online coupled with high-performance liquid chromatography (HPLC)-inductively coupled plasma mass spectrometry, was developed for the first time for enrichment and determination of ultra-trace mercury (Hg) species (inorganic divalent Hg (Hg(II)), methylmercury (CH3Hg(II)) and ethylmercury (C2H5Hg(II)) in cereals and environmental samples. In the proposed method, functionalization of the commercial C-18 column with dithizone, enrichment, and elution of the above Hg species can be completed online with the developed SPE device. A simple solution of 2-mercaptoethanol (1% (V/V)) could be used as an eluent for both the SPE and HPLC separation of Hg species, significantly simplifying the method and instrumentation. The online SPE method was optimized by varying dithizone dose, 2-mercaptoethanol concentration, and sample volume. In addition, the effect of pH, coexisting interfering ions, and salt effect on the enrichment was also discussed. Under the optimized conditions, the detection limits of Hg species for 5 mL water sample were 0.15 ng/L for Hg(II), 0.07 ng/L for CH3Hg(II), and 0.04 ng/L for C2H5Hg(II) with recoveries in the range of 85%-100%. The developed dithizone-functionalized C-18 SPE column can be reused after a single functionalization, which significantly simplifies the enrichment step. Moreover, the stability of Hg species enriched on the SPE column demonstrated its suitability for field sampling of Hg species for later laboratory analysis. This environment-friendly method offers a robust tool to detect ultra-trace Hg species in cereals and environmental samples. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| Department | 环境纳米技术与健康效应重点实验室; 环境化学与生态毒理学国家重点实验室 ; 环境纳米技术与健康效应重点实验室; 环境化学与生态毒理学国家重点实验室 |
| Keyword | METHYLMERCURY SPECTROMETRY PRECONCENTRATION METHYLATION REDUCTION OXIDATION CHINA RICE FISH |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47653 |
| Collection | 环境纳米技术与健康效应重点实验室 |
| Corresponding Author | Yin, Yongguang |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310024, Peoples R China 5.Shimadzu China Innovat Ctr Shimadzu China Co LTD, Beijing 100020, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Ying,Zhu, Ailing,Fang, Yingying,et al. Dithizone-functionalized C-18 online solid-phase extraction-HPLC-ICP-MS for speciation of ultra-trace organic and inorganic mercury in cereals and environmental samples[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,115(0):403-410. |
| APA | Wang, Ying.,Zhu, Ailing.,Fang, Yingying.,Fan, Changjun.,Guo, Yanli.,...&Jiang, Guibin.(2022).Dithizone-functionalized C-18 online solid-phase extraction-HPLC-ICP-MS for speciation of ultra-trace organic and inorganic mercury in cereals and environmental samples.JOURNAL OF ENVIRONMENTAL SCIENCES,115(0),403-410. |
| MLA | Wang, Ying,et al."Dithizone-functionalized C-18 online solid-phase extraction-HPLC-ICP-MS for speciation of ultra-trace organic and inorganic mercury in cereals and environmental samples".JOURNAL OF ENVIRONMENTAL SCIENCES 115.0(2022):403-410. |
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| Dithizone-functional（1507KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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