Analysis on vitamin B1 and vitamin B2 proficiency testing assessment in China disease control and prevention system
OBJECTIVE To evaluate the detection ability of vitamin B 1 and vitamin B2 in rice flour in the laboratories of disease control and prevention system,by conducting the proficiency testing(PT)activity.METHODS Before the vitamin B1 and vitamin B2 quality control samples were distributed to the laboratories of disease control and prevention system,the uniformity and stability of samples were analyzed by one-way ANOVO respectively.High performance liquid chromatography(HPLC)method was required to determine vitamin B1(GB 5009.84-2016:determination of vitamin B,in food,first method as reference).HPLC method was also required to determine vitamin B2(GB 5009.85-2016:determination of vitamin B2 in food,first method as reference).Robust statistics analysis of proficiency testing result was conducted to evaluate laboratory testing ability through Z score.RESULTS A total of 43 laboratories completed the proficiency testing.In all of the laboratories participated in the determination of vitamin B1 and vitamin B2,the total satisfactory rate of vitamin B1 was 88.4％,while vitamin B2 was 86.0％.CONCLUSION The ability of vitamin B1 and vitamin B2 detection in disease control and prevention system in China is better than expected,and the testing ability of a few laboratory needs to be improved.
disease control and prevention systemvitamin B1vitamin B2proficiency testing
NETL
NSTL
万方数据
