岩石中微量銻的測定,因受光譜分析的灵敏度的限制,一般采用比色法測定,其中一种是应用甲基紫进行比色。在地貭科学1960年第1期中刊登有陈增源所写“岩石及土壤中微量銻的快速比色测定”一文,在該文中已对这种方法作了介紹。这种方法是根据6N盐酸中氧化三价銻能变为SbCl_6~-离子的这一原理,在一定的酸度下这种絡离子能和甲基紫形成有色的絡合物,然后用甲苯提取进行 Determination of trace amounts of antimony in rocks, due to the sensitivity of the spectral analysis limits, the general use of colorimetric determination, one of which is the use of methyl violet colorimetric. This article was published in the first issue of Earth Science in 1960, entitled “Rapid Colorimetric Determination of Trace Antimony in Rock and Soil” by Chen Zengyuan. This method is based on the principle that the oxidation of trivalent antimony in 6N hydrochloric acid can be changed into SbCl_6 ~ - ions. Under certain acidity, this complex ion can form a colored complex with methyl violet and then extracted with toluene