期刊
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
卷 2014, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2014/964273
关键词
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资金
- National Natural Science Foundation of China [21375117, 21155001]
- Foundation of the Priority Academic Program Development of Jiangsu Higher Education Institutions
- Science and Technology Project of Lianyungang city [SH1209]
- Science and Technology of Jiangsu Marine Resources Development Research Institute [JSIMR201202]
We proposed a simple and effective method, by coupling ionic liquid-based aqueous two-phase systems (IL-ATPSs) with high performance liquid chromatography (HPLC), for the analysis of determining tartrazine and sunset yellow in food samples. Under the optimized conditions, IL-ATPSs generated an extraction efficiency of 99% for both analytes, which could then be directly analyzed by HPLC without further treatment. Calibration plots were linear in the range of 0.01-50.0 mu g/mL for both Ta and SY. The limits of detection were 5.2 ng/mL for Ta and 6.9 ng/mL for SY. This method proves successful for the separation/analysis of tartrazine and sunset yellow in soft drink sample, candy sample, and instant powder drink and leads to consistent results as obtained from the Chinese national standard method.
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