水溶液中含百万分之一或万亿分之一痕量无机离子的测定是现在工业分析中的一个关踺问题,有不少满意的方法适合于测定微克量的许多离子,但在许多例子中,当进行满意的分析之前,必须经过浓集和分离的操作,分析化学家面对此问题,自然地趋向于利用如色层、离子交换和溶剂萃取等浓集/纯化的方法。这些领域经常有过评论。而且已为在家所熟悉。然而,一般较少注意到应用“富集剂”(gathering agents)的沉淀法,也提供了自水溶液中浓集痕量元素的灵敏和选择的方法。本文的目的是把这些方法按有关元素名称排列汇集在一起,这可能还是第一次。本文的内容主 The determination of traces of inorganic ions in aqueous solutions, including one part per million or one trillionth of a trillion, is now a concern in industrial analysis and there are many satisfactory methods for measuring many ions in micrograms, but in many cases , Analytical chemistries must go through a concentration and separation process before they perform a satisfactory analysis, and naturally chemists tend to concentrate / purify by methods such as chromatography, ion exchange, and solvent extraction. There are often comments in these areas. And already familiar at home. However, precipitation methods employing “gathering agents” are generally less commonly noticed, as are sensitive and selective methods of concentrating trace elements from aqueous solutions. The goal of this article is to put these methods together in the same order of element names, which is probably the first time. The main content of this article