溴邻苯三酚红光度法测定含铬矿石中的钨 |
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引用本文: | 辛莉莉.溴邻苯三酚红光度法测定含铬矿石中的钨[J].岩石矿物学杂志,1983,2(2):142-143. |
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作者姓名: | 辛莉莉 |
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作者单位: | 广东省地质局第九实验室 |
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摘 要: | 本文在资料邻苯三酚红(十六烷基三甲基氯化铵)三元络合物在硝酸介质中测定钨的基础上,研究了钨与溴邻苯三酚红(溴代十六烷基三甲基胺)三元络合物的测定条件,提出在硫酸介质中,用溴邻苯三酚红(溴代十六烷基三甲基胺)三元络合物不经分离测定含铬高的矿石中的钨。在盐酸羟胺、EDTA存在下,二十余种阴,阳离子不干扰测
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SPECTROPHTOMETRIC DETERMINTION OF TUNGSTEN IN MINERALS AND ROCKS CONTAINING CHROMIUM WITH BROMOPYROGALLOL RED |
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Abstract: | In sulphuric acid medium tungsten forms a ternary complex with bromo-
pyrogallol red and cetyltrimethyl-ammonium bromide. The Beer''s law is obe-
yed for tungsten oxide of 0-200 ug/50m1. By the addition of EDTA and
NH20H.HCl twenty kinds of foreign ions do not interfere and the quantity
tolerance for chromium is 30 times that of tungsten. |
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