重量法测定晶质石墨矿中的固定碳含量
Inner Mongolia Science Technology and Economy(2017)
Abstract
用王水溶解石墨矿样,消除碳酸盐碳、黄铁矿、砷、锑、铋的多硫化物后过滤、洗涤,在550℃灰化滤纸并消除有机碳,保持1.5h,称重,然后在950℃灼烧至恒重,前后两次重量之差值为固定碳含量.经国家一级标准物质验证、加标回收试验及方法对照试验证明,分析结果准确、可靠,并提高了石墨矿中固定碳含量的检测速度,节省了检测成本,尤其适合地矿实验室大批量石墨矿样的测定.
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