Determination of Chromium (Ⅵ) in Textiles by Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry

To eliminate the international trade barriers and safeguard the people’s health, a method was developed to measure chromium (Ⅵ) in the extract of textiles with higher sensitivity. It was based on ion chromatography combined with inductively coupled plasma mass spectrometry (IC-ICP-MS). IonPac AG11 anion-exchange column and NH₄NO₃ mobile phase were used, with gradient elution and collision cell technology (CCT). The chromatograms were analyzed and discussed through control experiments and isotopic abundance ratios. The results show that it can separate chromium (Ⅲ) and chromium (Ⅵ) very well. A limit of detection of 0.02 μg/L for detecting chromium (Ⅵ) is obtained with an injection volume of 100 μL. This method can meet the requirements for determination of extractable chromium (Ⅵ) in textiles with simple operation and high sensitivity.