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本文研究了二甲苯胺篮—Ⅱ的正丁醇溶液为萃取显色剂,光度法测定硅酸盐等岩石中的镁。对二甲苯胺篮—Ⅱ镁络合物的性质、显色的基本条件、外来离子干抚及其消除进行了探讨,实验证明用正丁醇萃取显色,铁、铝、锰、钙及硅等元素不干扰测定,从而制定了一个硅酸盐岩单矿物中镁的测定方法。方法简单、快速、重现性较好,选择性和灵敏度高,经初步生产考验结果比较满意。
In this paper, the n-butanol solution of xylenol basket-Ⅱ was used as extraction reagent, and the photometry was used to determine the magnesium in rocks such as silicate. P-xylaniline basket-Ⅱ magnesium complex properties, the basic conditions of color, foreign ions dry stripping and its elimination were discussed, experiments show that with n-butanol extraction color, iron, aluminum, manganese, calcium and silicon And other elements do not interfere with the determination, which developed a silicate single mineral magnesium determination. The method is simple, rapid, good reproducibility, high selectivity and high sensitivity, and is satisfied with the preliminary production test results.