Determination of Chromium(Ⅵ) and Chromium(Ⅲ) Stripped from Stopcock by Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry[J]. 2016,35(12):1639-1642.
Determination of Chromium(Ⅵ) and Chromium(Ⅲ) Stripped from Stopcock by Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry[J]. 2016,35(12):1639-1642.DOI:
A liquid chromatography-inductively coupled plasma mass spectrometric(LC-ICP-MS) method was established for the determination of chromium(Ⅵ) and chromium(Ⅲ) stripped from stopcock.By investigating pH value,ICP-MS operation conditions and parameters,the detection limits of chromium(Ⅵ) and chromium(Ⅲ) were obtained to be 0.013 μg/L and 0.028 μg/L,respectively.Linear ranges of chromium(Ⅵ) and chromium(Ⅲ) were 0.02-10 μg/L and 0.04-20 μg/L,respectively.The spiked recoveries varied from 76.0% to 116.4%,with RSDs of 1.8%-2.8%.The method is fast and accurate,and has a low detection limit.It is suitable for the detection requirement of stopcock products.
关键词
液相色谱-电感耦合等离子体质谱法水嘴六价铬三价铬
Keywords
liquid chromatography-inductively coupled plasma mass spectrometry(LC-ICP-MS)stopcockchromium(Ⅵ)chromium(Ⅲ)