Analytical Sciences

Abstract − Analytical Sciences, 35(7), 807 (2019).

Accurate Determination of Trace Molybdenum in Drinking Water by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
Panshu SONG, Jun WANG, Jingbo CHAO, Qian WANG, and Bing WU
Division of Chemical Metrology and Analytical Science, National Institute of Metrology, Beijing 100029, China
A method for accurate and precise determination of trace molybdenum in drinking water by isotope dilution inductively coupled plasma mass spectrometry was developed, given the concentrations of Mo in drinking-water samples from Chaoyang and Changping districts of Beijing (China) as 1.017 ± 0.008 and 1.033 ± 0.007 μg kg−1 (k = 2), respectively. Special care was taken for the validation of the proposed ID-ICPMS method using CRM 7203-a, a certified reference material for elemental analysis of tap water.