主题：【原创】USP32附录211关于砷盐测试的翻译

楼主辛苦了啊

好贴，谢谢楼主

谢谢!希望以后多发些此类文章

关于红字不确定的部分，我个人的意见是“允许氢气发生和显色反应在室温下持续45分钟”

加20ml 7N的盐酸，应该是笔误，应更正为加20ml 7N的硫酸

把剩下的两段补上，如果有不对的地方，请高手指教。

This procedure is designed to determine the presence of trace amounts of arsenic (As) by converting the arsenic in a substance under test to arsine, which is then passed through a solution of silver diethyldithiocarbamate to form a red complex. The red color so produced is compared, either visually or spectrophotometrically, to the color produced similarly in a control containing an amount of arsenic equivalent to the limit given in the individual monograph. Limits are stated in terms of arsenic (As). The content of arsenic does not exceed the limit given in the individual monograph.

Two methods are provided, the methods differing only in the preliminary treatment of the test substance and the standard. Generally, Method I is used for inorganic materials, while Method II is used for organic materials.


此程序用于确定测试物中是否存在痕量砷（As），确定方法是将测试物中的砷盐转化为胂，随后流经二乙基二硫代氨基甲酸银溶液，形成一种红色复合物。通过肉眼观察或分光光度计法，对比测试样品形成的红色与对照品形成的红色，对照品中含有各论指定限度的砷。限量以砷（As）计。砷含量不能超过各论指定的限量。

这里提供两种方法，方法的唯一区别在于检测物和标准品的初步处理。通常来讲，方法I适用于无机物检测，而方法II适用于有机物检测。

很好很厉害，对于初学者来说，是很好的帮助