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author:

Chen, Y. (Chen, Y..) [1] | Chen, J. (Chen, J..) [2] | Xi, Z. (Xi, Z..) [3] | Yang, G. (Yang, G..) [4] | Wu, Z. (Wu, Z..) [5] | Li, J. (Li, J..) [6] | Fu, F. (Fu, F..) [7]

Indexed by:

Scopus

Abstract:

We herein reported a method for the simultaneous detection of trace Cr(VI), Cr(III), and chromium(III) picolinate (CrPic) in foods using CE-ICP-MS together with ultrasonic-assisted extraction. The Cr(III) (Cr3+) was chelated with trans-1,2-diaminocyclohexane-N,N,Ń,Ń-tetraacetic acid (DCTA) to form a single charged Cr-DCTA- complex. Then, Cr(VI) (CrO42-), Cr-DCTA-, and CrPic were separated by CE within 8 min under a separation voltage of -13 KV followed by their monitoring with ICP mass spectrometer (ICP-MS). The proposed method is simple, effective, and sensitive. It has an instrument detection limit of 0.10, 0.18, and 0.20 ngCr/mL for Cr(VI), Cr(III), and CrPic, respectively. With the help of the methods, we have successfully determined Cr(VI), Cr(III), and CrPic in nutritional supplement (CrPic yeast tablet) with an RSD (n = 5) <6% and a recovery of 93-103%. The experimental results showed that CrPic was the main speciation of chromium in the nutritional supplement, with a concentration of 1514.6 μg Cr/g. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keyword:

Capillary electrophoresis; Chromium; Chromium picolinate; ICP-MS; Speciation analysis

Community:

  • [ 1 ] [Chen, Y.]Dept. of Chemistry, Key Lab. of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, China
  • [ 2 ] [Chen, J.]Dept. of Chemistry, Key Lab. of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, China
  • [ 3 ] [Xi, Z.]Dept. of Chemistry, Key Lab. of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, China
  • [ 4 ] [Yang, G.]Department of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian, China
  • [ 5 ] [Wu, Z.]Department of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian, China
  • [ 6 ] [Li, J.]Food Safety Key Laboratory of Liaoning Province, Bohai University, Jinzhou, Liaoning, China
  • [ 7 ] [Fu, F.]Dept. of Chemistry, Key Lab. of Analysis and Detection for Food Safety of Ministry of Education, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, China

Reprint 's Address:

  • [Fu, F.]Department of Chemistry, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou UniversityChina

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Source :

Electrophoresis

ISSN: 0173-0835

Year: 2015

Issue: 9-10

Volume: 36

Page: 1208-1215

2 . 4 8 2

JCR@2015

3 . 0 0 0

JCR@2023

ESI HC Threshold:265

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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