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恩格斯指出:“科学的发生和发展一开始就是由生产决定的.”随着我国工农业生产的发展,光度分析已成为目前最广泛采用的分析手段之一,而研究有机试剂的结构、其与金属离子的反应规律以及它在分析化学上的实际应用则是提高光度分析灵敏度、选择性及简化操作方法的重要途径。本文拟就N-苯甲酰苯胲(N-Benzoyl-phenylhydroxylamine,以下简称BPHA)BPHA在萃取分离和萃取光度分析上的应用,予以简要的叙述:于1944年首次作为一种分析试剂被提出后,从五十年代以来,曾被广泛作为金属阳离子的沉淀剂用在化学分析上。由于BPHA在一定条件下能与钽的离子形成沉淀(铌部分地共沉淀),达到与铌、钦和锆的分离,因而也被称为钽试剂。国内外对BPHA在分析化学上的应用,均有综述性的文章发表。
Engels pointed out: “The birth and development of science were decided by production from the very beginning.” With the development of industrial and agricultural production in our country, photometric analysis has become one of the most widely used analytical tools at present, and the study of the structure of organic reagents, The reaction law of metal ions and its practical application in analytical chemistry are important ways to improve the sensitivity, selectivity and simplification of photometric analysis. In this paper, the application of N-Benzoyl-phenylhydroxylamine (BPHA) BPHA in extraction, separation and extraction spectrophotometry is briefly described. After it was first proposed as an analytical reagent in 1944, , Has been widely used as a precipitant for metal cations since the 1950s for chemical analysis. Since BPHA can precipitate tantalum ions (partially coprecipitated with niobium) under certain conditions, separation from niobium, zirconium, and zirconium, it is also known as tantalum reagent. At home and abroad on the application of analytical chemistry in BPHA, there is a comprehensive article published.