Abstract
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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Acknowledgments
This research was financially supported by Beijing Municipal Natural Science Foundation (7082065) and the National High-tech Research, Development Project (2007AA06Z404) of China and Beijing key lab. of TCVM.
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Hou, X., Li, Y., Cao, S. et al. Analysis of Para Red and Sudan Dyes in Egg Yolk by UPLC–MS–MS. Chroma 71, 135–138 (2010). https://doi.org/10.1365/s10337-009-1357-8
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DOI: https://doi.org/10.1365/s10337-009-1357-8