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- Title
Speciation Analysis of Chromium in Chromium-Enriched Yeast by Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry.
- Authors
Zhang, Shuang-Qing; Cheng, Sui-Han; Shen, Shi; Luo, Bi-Ying; Zhang, Yan
- Abstract
Chromium-enriched yeast (CrY) is a popular Cr dietary supplement, but suitable speciation analysis of highly toxic Cr(VI) in CrY is not available. Ion chromatography-inductively coupled plasma mass spectrometry method was firstly developed and validated for the quantification of Cr(III) and Cr(VI). Ultrasound-assisted weakly alkaline EDTA solution combined with boiling was used to extract two Cr species in CrY. Two species were separated on two successive anion-exchange columns using a mobile phase of 0.6 mmol/L EDTA and 76 mmol/L NH4NO3 solution. The method was sensitive, accurate (92.4–100.9%), and precise (0.8–3.1%). Species of Cr(VI) were not found in CrY.
- Subjects
SPECIATION analysis; INDUCTIVELY coupled plasma mass spectrometry; CHROMIUM; YEAST; IONS; ALKALINE solutions
- Publication
Biological Trace Element Research, 2021, Vol 199, Issue 1, p338
- ISSN
0163-4984
- Publication type
Article
- DOI
10.1007/s12011-020-02149-0