Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry

doi:10.1007/s40242-022-2131-9

高等学校化学研究 ›› 2022, Vol. 38 ›› Issue (3): 774-781.doi: 10.1007/s40242-022-2131-9

Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry

SONG Lili, LI Hui, LI Ting, XU Jiaquan and CHEN Huanwen

Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China

收稿日期:2022-04-10 修回日期:2022-05-04 出版日期:2022-06-01 发布日期:2022-05-26
通讯作者: CHEN Huanwen E-mail:chw8868@gmail.com
基金资助:
This work was supported by the National Natural Science Foundation of China (Nos.21727812, 21705016), the Doctoral Start-up Fund of East China University of Technology, China(No.DHBK2017115), and the Open Fund of Jiangxi Provincial Key Laboratory of Mass Spectrometry Science and Instrumentation, China (No.JXMS202117).

Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry

SONG Lili, LI Hui, LI Ting, XU Jiaquan and CHEN Huanwen

Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, P. R. China

Received:2022-04-10 Revised:2022-05-04 Online:2022-06-01 Published:2022-05-26
Contact: CHEN Huanwen E-mail:chw8868@gmail.com
Supported by:
This work was supported by the National Natural Science Foundation of China (Nos.21727812, 21705016), the Doctoral Start-up Fund of East China University of Technology, China(No.DHBK2017115), and the Open Fund of Jiangxi Provincial Key Laboratory of Mass Spectrometry Science and Instrumentation, China (No.JXMS202117).

摘要/Abstract

摘要： An electrochemical mass spectrometry technique was developed based on a homemade analytical device for sequential analysis of the heavy metals with various speciations in the scales. Four speciations(e.g., water-soluble speciation, organic speciation, indissoluble speciation and elemental speciation) of heavy metals are sequentially extracted by H₂O, CH₃OH, EDTA-2Na and electrolysis for online electrospray ionization mass spectrometry(ESI-MS) detection. The method takes significant advantages, such as requiring no tedious offline sample pretreatment, high speed of analysis(20 min), high throughput (multi-metals), good sensitivity(0.5 μg/L) and rich chemical information(four speciations). As a result, the rapid comprehensive characterization of four speciations of Pb, Ni, Cu, Zn, Fe, Ba, Mn, Cr and Ca in water pipe scales has been qualitatively achieved. It demonstrated that the present method is a powerful tool for the effective assessment of potential hazards in drinking water, which provides a new analytical idea for evaluating water quality.

关键词: Drinking water pipe scale, Heavy metal speciation analysis, Electrochemical-mass spectrometry, Sequential ionization

Abstract: An electrochemical mass spectrometry technique was developed based on a homemade analytical device for sequential analysis of the heavy metals with various speciations in the scales. Four speciations(e.g., water-soluble speciation, organic speciation, indissoluble speciation and elemental speciation) of heavy metals are sequentially extracted by H₂O, CH₃OH, EDTA-2Na and electrolysis for online electrospray ionization mass spectrometry(ESI-MS) detection. The method takes significant advantages, such as requiring no tedious offline sample pretreatment, high speed of analysis(20 min), high throughput (multi-metals), good sensitivity(0.5 μg/L) and rich chemical information(four speciations). As a result, the rapid comprehensive characterization of four speciations of Pb, Ni, Cu, Zn, Fe, Ba, Mn, Cr and Ca in water pipe scales has been qualitatively achieved. It demonstrated that the present method is a powerful tool for the effective assessment of potential hazards in drinking water, which provides a new analytical idea for evaluating water quality.

Key words: Drinking water pipe scale, Heavy metal speciation analysis, Electrochemical-mass spectrometry, Sequential ionization

SONG Lili, LI Hui, LI Ting, XU Jiaquan and CHEN Huanwen. Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry[J]. 高等学校化学研究, 2022, 38(3): 774-781.

SONG Lili, LI Hui, LI Ting, XU Jiaquan and CHEN Huanwen. Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry[J]. Chemical Research in Chinese Universities, 2022, 38(3): 774-781.

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Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry

Sequential Speciation Analysis of Heavy Metals in Drinking Water Pipe Scales by Mass Spectrometry

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