Abstract
A rapid quasi-deterministic quantitative method for the determination of 3-methyl-quinoxaline-2-carboxylic acid (MQCA) residues in olaquindox metabolites of animal-derived foods was developed, by using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The sample tissue was extracted by alkaline hydrolysis to extract MQCA, purified by anion solid phase extraction column, and detected by LC-MS/MS, and then quantified by internal standard method. The results showed that MQCA had a good linear relationship in the concentration range of 0.5~50.0 ng/mL, and the correlation coefficient was 0.999 7. The detection limit of MQCA was 0.1 μg/kg. The recovery rate was 95.6%~108.2% at the addition level of 0.1, 0.2 and 1.0 μg/kg, and the relative standard deviation was 3.4%~14.3% (n=6). In conclusion, the detection method above was accurate, rapid and sensitive, and suitable for detecting and confirming the residual amount of MQCA in animal foods.
Publication Date
11-28-2019
First Page
70
Last Page
74,93
DOI
10.13652/j.issn.1003-5788.2019.11.014
Recommended Citation
Di, LIU; Li, HAN; Ni, ZENG; Tingting, YU; Heng, WANG; Bin, WANG; and Mao, RONG
(2019)
"Quick determination of 3-methyl-quinoxaline-2-carboxylic acid residues in animal-derived food by alkali hydrolysis-solid phase extraction-liquid chromatography-tandem mass spectrometry,"
Food and Machinery: Vol. 35:
Iss.
11, Article 12.
DOI: 10.13652/j.issn.1003-5788.2019.11.014
Available at:
https://www.ifoodmm.cn/journal/vol35/iss11/12
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