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author:

Lin, Li (Lin, Li.) [1] | Zheng, JinPing (Zheng, JinPing.) [2] | Sun, JiHong (Sun, JiHong.) [3]

Indexed by:

Scopus SCIE

Abstract:

A novel method for the determination of Cr(III) and Cr(VI) in gelatin capsules is reported that involved separation by capillary electrophoresis and the determination using inductively coupled plasma mass spectrometry with a collision-reaction cell. The separation was achieved on a fused-silica capillary column (75 mu m ID x 30 cm length). The electrophoretic buffer was 20 mM NaH2PO4-5 mM Na2B4O7 (pH 6.0) with an applied voltage of 15 kV. Chromium species in the capsules were extracted into a buffer-5 mM 1,2-cyclohexanediaminetetraacetic acid mixture. The spike recoveries of chromium species were in the range of 87% to 95%. The detection limits of Cr(III) and Cr(VI) were 0.61 and 0.45 ng.mL(-1), and the procedure was applied for the speciation of capsules. Approximately 0.242-71.64 mu g g(-1) of Cr(III) were detected in the capsules.

Keyword:

Capillary electrophoresis Chromium speciation Gelatin capsules Inductively coupled plasma-mass spectrometry

Community:

  • [ 1 ] [Lin, Li]Beijing Univ Technol, Beijing 100122, Peoples R China
  • [ 2 ] [Sun, JiHong]Beijing Univ Technol, Beijing 100122, Peoples R China
  • [ 3 ] [Lin, Li]China Natl Food & Safety Supervis & Inspect Ctr, Yongfeng Ind Base, Beijing, Peoples R China
  • [ 4 ] [Zheng, JinPing]Fuzhou Univ, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • [Sun, JiHong]Beijing Univ Technol, 100 Pingleyuan, Beijing 100122, Peoples R China

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Source :

ANALYTICAL LETTERS

ISSN: 0003-2719

Year: 2014

Issue: 14

Volume: 47

Page: 2406-2416

1 . 0 3

JCR@2014

1 . 6 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:268

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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