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超高效液相色谱-串联质谱法测定鸡肉中勃地龙残留量的不确定度评定

2021-11-12赵盼马俊美郭丽敏

肉类研究 2021年10期

赵盼 马俊美 郭丽敏

摘 要:建立超高效液相色谱-串联质谱(ultra-high performance liquid chromatography-tandem mass spectrometry,UPLC-MS/MS)法测定鸡肉中勃地龙的不确定度评价方法,以提高检测结果的准确性。在建立不确定度评定的数学模型基础上,寻找检测过程中各不确定度分量,用统计分析的方法对各分量进行评定,合成标准不确定度,根据概率分布计算扩展不确定度。结果表明:校准曲线拟合和标准溶液配制对不确定度的贡献最大;当鸡肉中勃地龙残留量为7.425 μg/kg时,其扩展不确定度为0.754 μg/kg(k=2)。

关键词:超高效液相色谱-串联质谱;鸡肉;勃地龙;不确定度

Uncertainty Evaluation for the Determination of Boldenone Residues in Chicken by Ultra-High Performance

Liquid Chromatography-Tandem Mass Spectrometry

ZHAO Pan, MA Junmei, GUO Limin*

(Hebei Food Inspection and Research Institute, Hebei Food Safety Key Laboratory, Shijiazhuang 050227, China)

Abstract: In order to improve the accuracy of the detection of boldenone in chicken by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), a method for uncertainty evaluation was established. Based on the established mathematical model for uncertainty evaluation, the uncertainty components arising from the analytical process were determined and evaluated by statistical analysis. The standard uncertainty was synthesized, and the extended uncertainty was calculated according to the probability distribution. It was found that calibration curve fitting and standard solution preparation made the greatest contribution to the uncertainty. When the boldenone residue in chicken was 7.425 μg/kg,

the expanded uncertainty was 0.754 μg/kg (k = 2).

Keywords: ultra performance liquid chromatography-mass spectrometry; chicken; boldenone; uncertainty

DOI:10.7506/rlyj1001-8123-20210511-125

中图分类号:TS251.7                                         文献标志码:A 文章编号:1001-8123(2021)10-0048-06

引文格式:

赵盼, 马俊美, 郭丽敏. 超高效液相色谱-串联质谱法测定鸡肉中勃地龙残留量的不确定度评定[J]. 肉类研究, 2021, 35(10): 48-53. DOI:10.7506/rlyj1001-8123-20210511-125.    http://www.rlyj.net.cn

ZHAO Pan, MA Junmei, GUO Limin. Uncertainty evaluation for the determination of boldenone residues in chicken by ultra-high performance liquid chromatography-tandem mass spectrometry[J]. Meat Research, 2021, 35(10): 48-53. DOI:10.7506/rlyj1001-8123-20210511-125.    http://www.rlyj.net.cn

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