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食品中砷的检测,国家卫生部与标准局规定用DDC-Ag比色法。本文着重介绍了ISO推荐的砷化氢发生器(见图1)与原国标砷化氢发生器的对比试验。结果表明,等效ISO砷化氢发生器平均回收率为92.16％(n=12),C.V.为1.83％;原国标砷化氢发生器平均回收率为82.82(n=12),C.V.为3.01％。因此,等效ISO砷化氢发生器具有优越性,并值得推广。
Detection of arsenic in food, the National Ministry of Health and the Bureau of Standards DDC-Ag colorimetry. This article focuses on the ISO recommended arsine generator (see Figure 1) compared with the original national standard arsine generator test. The results showed that the average recoveries of the equivalent ISO arsenic hydride generator were 92.16% (n = 12) and CV was 1.83%. The average recovery rate of the original national standard arsine generator was 82.82 (n = 12) and the CV was 3.01% . Therefore, the equivalent ISO arsenide generator has the advantages and is worth promoting.