期刊
JOURNAL OF CHROMATOGRAPHIC SCIENCE
卷 48, 期 1, 页码 22-25出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/chromsci/48.1.22
关键词
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资金
- Beijing municipal nature science foundation [7082065]
- Postdoctoral Foundation [20070410096]
- National High-tech Research and Development Project of China [2007AA06Z404]
A simple high-performance liquid chromatography method was developed for quantitative determination of para red, Sudan I, Sudan II, Sudan III, Sudan IV, canthaxanthin, and astaxanthin in feedstuff. The sample was extracted using acetontrile and cleaned up on a C-18 SPE column. The residues were analyzed using ultra-performance liquid chromatography coupled to a diode array detector at 500 nm. The mobile phase was acetonitrile-formic acid-water with a gradient elution condition. The external standard curves were calibrated. The mean recoveries of the seven colorants were 62.7-91.0% with relative standard deviation 2.6-10.4% (intra-day) and 4.0-13.2% (inter-day). The detection limits were in the range of 0.006-0.02 mg/kg.
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