Journal
CHROMATOGRAPHIA
Volume 71, Issue 1-2, Pages 135-138Publisher
SPRINGER HEIDELBERG
DOI: 10.1365/s10337-009-1357-8
Keywords
Column liquid chromatography; UPLC-MS-MS; Matrix solid-phase dispersion; Para red; Sudan dyes
Funding
- Beijing Municipal Natural Science Foundation [7082065]
- National High-tech Research, Development Project [2007AA06Z404]
- Beijing key lab. of TCVM
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Matrix solid-phase dispersion (MSPD) with alumina N as adsorbent has been used for extraction of para red, Sudan 1, Sudan 2, Sudan 3, and Sudan 4 dyes from egg yolk. The extracts were analyzed by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS-MS). Mean recovery for the five dyes ranged from 63.2 to 98.6%, with CV 0.55-10.00%. One sample was confirmed to contain 0.3 mg kg(-1) Sudan 4.
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