Journal
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
Volume 35, Issue 7, Pages 1306-1315Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ja00060d
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Funding
- Institutional Instrument Development Program of the Institute of Ecology and Environment of the Chinese Academy of Sciences [2016yyxm03]
- Chinese Major Science and Technology Program for Water Pollution Control and Treatment [2014ZX07405001]
- Edanz Group in China
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Matrix interference is a common problem in the measurement of trace elements in waterviaICP-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.
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