液相色谱法测定食用油中苯并a芘含量结果的不确定度评定
目的 评定液相色谱法测定食用油中苯并(a)芘含量结果的不确定度。方法 依据GB 5009.27-2016《食品安全国家标准 食品中苯并(a)芘的测定》测定食用油中苯并(a)芘的含量, 建立液相色谱-荧光检测器法测定食用油中苯并(a)芘的不确定度数学模型, 通过分析其测定的过程, 确定影响测定结果的不确定度主要分量来源, 并计算出扩展不确定度。结果 称样量约为1 g时, 测量结果为: 17.2 μg/kg, 扩展不确定度Up为 1.3 μg/kg, 合成不确定度U C-rel为3.9×10-2 μg/kg, 包含因子k=2。结论 建立了液相色谱-荧光检测法测定食用油中苯并(a)芘的测量不确定度评定方法。
Objective To evaluate the uncertainty of the determination of benzo (a) pyrene content in edible oil by liquid chromatography. Methods The content of benzo (a) pyrene in edible oil was determined according to GB 5009.27-2016 "Determination of Benzo (a) pyrene in National Food Safety Standard Food". A mathematical model of uncertainty for the determination of benzo (a) pyrene in edible oil by liquid chromatography-fluorescence detector was established. By analyzing the determination process, the main component sources of uncertainty affecting the determination results were determined, and the extended uncertainty was calculated. Results When the weighing amount was about 1 g, the measurement result was 17.2 μg/kg, the extended uncertainty up was 1.3 μg/kg, the synthetic uncertainty UC-rel was 3.9×10-2 μg/kg, and the inclusion factor was k=2. Conclusion The uncertainty evaluation method for the determination of benzo (a) pyrene in edible oil by liquid chromatography-fluorescence detection is established.
标题：液相色谱法测定食用油中苯并(a)芘含量结果的不确定度评定
英文标题：Evaluation of uncertainty in determination of benzo (a) pyrene in edible oil by liquid chromatography
作者：
刘笑笑 兰州市食品药品检验所；甘肃省种植中药材外源性污染物监测工程研究中心
苗茜 兰州市食品药品检验所；甘肃省种植中药材外源性污染物监测工程研究中心
张滢 兰州市食品药品检验所
丁辉 兰州市食品药品检验所；甘肃省种植中药材外源性污染物监测工程研究中心
彭涛 兰州市食品药品检验所；甘肃省种植中药材外源性污染物监测工程研究中心
吴福祥 兰州市食品药品检验所；甘肃省种植中药材外源性污染物监测工程研究中心
周围 兰州市食品药品检验所
中文关键词:食用油,液相色谱-荧光检测器,苯并(a)芘,不确定度,
英文关键词:edible oil,liquid chromatoplc-fluorescence detector,benzo (a) pyrene measurement,uncertainty,
发表日期：2020-03-21
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