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用氢化物原子荧光光谱法,对测定大米粉中总砷的测试结果的不确定度进行评定,分析计算测量结果不确定度分量。结果表明,当总砷含量为0.101mg/kg时,扩展不确定度为0.00886mg/kg(k=2)。
Uncertainty of measurement results of total arsenic in rice flour was evaluated by hydride atomic fluorescence spectrometry. The uncertainty component of measurement results was analyzed and calculated. The results showed that the expanded uncertainty was 0.00886 mg / kg (k = 2) when the total arsenic content was 0.101 mg / kg.