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单矿物中微量硫的测定由于样品少和含硫量低,故要求有可靠的分离方法、低而稳定的空白值和高灵敏度的检测手段。本文重点研究了燃烧法析出 SO_2和降低空白值的条件,选用了高灵敏度 IIMGB 褪色光度法进行检测。本法能定量分离微克量级硫,空白降低到1.3微克,检测范围为0.5～3.5微克。操作简便,分析快速,结果准确,重现性好。既可用于单矿物,也可用于金属中微量
Determination of trace sulfur in a single mineral As the sample less and low sulfur content, it requires a reliable separation method, low and stable blank value and high sensitivity detection means. This paper focuses on the combustion conditions of SO2 precipitated and reduce the blank value, the choice of high sensitivity IIMGB fading spectrophotometric detection. This method can quantitatively separate micrograms of grade sulfur, reducing the blank to 1.3 micrograms, the detection range of 0.5 to 3.5 micrograms. Easy to operate, fast analysis, accurate results, good reproducibility. Can be used for single mineral, but also for trace metals