| 液相色谱-质谱/质谱法测定大米中莠去津残留量的不确定度评定 |
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| 引用本文： | 刘萍,刘旭,王婧,蒋国振.液相色谱-质谱/质谱法测定大米中莠去津残留量的不确定度评定[J].粮食与食品工业,2020,27(1):64-67. |
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| 作者姓名： | 刘萍 刘旭 王婧 蒋国振 |
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| 作者单位： | 陕西省粮油产品质量监督检验中心,西安 710016 |
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| 摘 要： | 运用高效液相色谱-串联质谱法对大米中莠去津残留量进行不确定度评定。分析测量过程的不确定度来源,并且对不确定度的各个分量进行计算和合成。结果表明:标准溶液的配制引入的不确定度分量是影响莠去津残留量测定不确定度的主要原因。当大米中莠去津的添加水平为50.0μg/kg时,扩展不确定度为2.90μg/kg,测定结果表示为X=(45.10±2.90)μg/kg,k=2,P=95%。
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| 关 键 词： | 莠去津 液相色谱-质谱/质谱法 不确定度 |
Uncertainty analysis of atrazine in rice by HPLC-MS/MS method |
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| Liu Ping,Liu Xu,Wang Jing,Jiang Guozhen.Uncertainty analysis of atrazine in rice by HPLC-MS/MS method[J].Cereal and Food Industry,2020,27(1):64-67. |
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| Authors: | Liu Ping Liu Xu Wang Jing Jiang Guozhen |
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| Affiliation: | (Shaanxi Grains and Oil Quality Test Institute,Xi’an 710016) |
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| Abstract: | To study the uncertainty of atrazine in rice by HPLC-MS/MS method,we analyzed the uncertainty sources in measurement process,evaluated and synthesized each component of uncertainty.Results showed that most significant factors contributing to the determination of atrazine were the standard solution preparation.As the content of atrazine was 50.0μg/kg,the expanded uncertainty was 2.90μg/kg.The result of atrazine content was expressed as follows:X=(45.10±2.90)μg/kg,k=2,P=95%. |
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| Keywords: | atrazine HPLC-MS/MS uncertainty |
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