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Trace element determination in high-salinity water using an online ion imprinted helical tube demineralizer combined with ICP-MS

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Abstract

Matrix interference is a common problem in the measurement of trace elements in water via ICP-MS. To solve this problem, a novel demineralizer was developed to combine with ICP-MS for determining trace elements in high-salinity water samples, which were filled with a novel ion imprinted material. In the analysis of water samples containing 120 mg L−1 of Ca2+, Mg2+, and Na+, the recoveries of As, Cd, Cu, Mn, Ni, Pb, Sb, and Tl were all maintained between 80% and 120% during the 10 hours of the continuous operation of the demineralizer, with the trueness and repeatability for all elements standing below 3% and 5%, respectively. After the usage of the demineralizer, the detection limits of the method for As, Cd, Cu, Mn, Ni, Pb, Sb, and Tl were reduced to less than one-tenth of its original values. In the analysis of real water samples, a standard substance containing trace elements in the coastal water (CASS-5) and 5 offshore seawater samples were analyzed. The trueness and repeatability for all elements were below 5% and the recoveries were between 85–104%, which all met the requirements of analytical chemistry.

Graphical abstract: Trace element determination in high-salinity water using an online ion imprinted helical tube demineralizer combined with ICP-MS

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Supplementary files

Article information


Submitted
18 Feb 2020
Accepted
23 Apr 2020
First published
13 May 2020

J. Anal. At. Spectrom., 2020, Advance Article
Article type
Technical Note

Trace element determination in high-salinity water using an online ion imprinted helical tube demineralizer combined with ICP-MS

H. Li, B. Zheng, C. Li, J. Zheng and Y. Zhang, J. Anal. At. Spectrom., 2020, Advance Article , DOI: 10.1039/D0JA00060D

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