Uncertainty Evaluation for Determination of Aflatoxin B1 in Maize by High Performance Liquid Chromatography-Post Column Photochemical Derivatization
High performance liquid chromatography-post column photochemical derivatization method was used to determine aflatoxin B1 content in corn.Through systematic analysis of the influencing factors of the whole determination process,the sources of uncertainty were evaluated,and each uncertainty component was evaluated.It was found that the uncertainty introduced by the concentration of standard substance,the preparation of standard solution and the measurement repeatability had a great influence on the measurement results.When aflatoxin B1 content was 7.86 μg·kg-1,the extended uncertainty was 0.68 μg·kg-1(k=2).
high performance liquid chromatography-post column photochemical derivatization methodmaizeaflatoxin B1uncertainty
NETL
NSTL
万方数据
