摘要
为确保１９８７～１９９０年间对我国１７个省市进行的食品中稀土元素含量的卫生学现场调查的结果的可靠性，对参与调查的４个实验室进行了实验室质量控制。所用方法为多元络合物分光光度—三波长法，最低检出限为０．１０μｇ。各水平总平均回收率为８５．３％各实验室的质控样品的测定结果在参考范围之内。测定结果的偏离百分数为４．５％～３１％。基本上符合实验室质控要求。
AbstractThe laboratory
quality control of four
laboratories which took part in the determination ofrare-earth
element in foods in 17 provinces and cities have been conducted to
ensure reliabilityof the results. The method used in the
determination was three wavelength spectrophotometry. The minimum
detection limit for rare-earth element was 0.10μg. The
averagerecoveries of each level was 85.3%. The testing results of
each laboratory were all withinreference limit.The asymmetry
coeflicient of the results were 4. 5%一31%.
出处
《中国食品卫生杂志》
1994年第2期7-9,64,共4页
Chinese Journal of Food Hygiene
