岩矿分析与经典法  

Geoanalysis and the Classical Methods

作　　者：金秉慧[1] 

机构地区：[1]中国地质科学院矿床地质研究所,北京100037

出　　处：《岩矿测试》2002年第1期37-41,共5页Rock and Mineral Analysis

摘　　要：回顾了近一个世纪以来经典的湿化学法 (重量法和容量法 )在岩矿分析方面的建立、发展情况。认为 :经典法曾有过长期的持续发展 ,对地学研究有过巨大的贡献 ,但由于地学研究对象主要转移至痕量元素以及经典法不适合痕量分析 ,在一些以仪器分析为主要手段的实验室 ,有被取代的现象。指出 :由于经典法依据的是全部原子、离子或分子参与的不可逆反应 ,是能够直接溯源至SI基本测量单位的分析技术 ,其优点为绝大多数仪器技术所不及 ,因此 ,它可以在某些领域被淡忘 ,但是不会消亡。The establishment and development of the classical wet methods(gravimetric and volumetric methods) applied in the geoanalysis in the past century is reviewed briefly.The classical methods have undergone a long period of continuous development.The geological studies owe much to these methods.However,as the interest of study turns to the trace constituents, which are not suited to these techniques,the classical chemical techniques have now almost disappeared for the routine analysis in many well equipped geochemical laboratories.The principle underlying the classical methods is based on an irreversible reaction in which all atoms,ions or molecules of the constituent of interest participate,in addition,the methods are directly traceable to basic SI units. These merits are not possessed by most instrumental techniques.It is believed that the classical methods may be forgotten in certain fields of application,but will long continue to be important and never die away.

关 键 词：岩矿分析 经典法 重量法 容量法 痕量元素 

分 类 号：P575[天文地球—矿物学]