| 碱熔—碘量法测定矿石中的砷 |
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| 引用本文： | 杨凤萍,邵国强,李伟彦,王菊,郭嘉鹏,苏广东,穆岩.碱熔—碘量法测定矿石中的砷[J].黄金,2017,38(6). |
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| 作者姓名： | 杨凤萍 邵国强 李伟彦 王菊 郭嘉鹏 苏广东 穆岩 |
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| 作者单位： | 1. 长春黄金研究院;2. 山东国大黄金股份有限公司 |
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| 摘 要： | 采用碱熔—碘量法测定矿石中的砷,对碘标准溶液标定方法、熔样温度与时间、还原剂碘化钾用量、饱和碳酸氢钠溶液等实验条件进行了优化。该方法测定结果的相对标准偏差为0.40%~1.59%,加入标准物质回收率为95.00%~103.20%,测定结果准确、稳定,且操作简单,适合批量矿石的测定。
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| 关 键 词： | 碱熔 碘量法 砷 过氧化钠-碳酸钠混合熔剂 标定方法 |
Determination of arsenic in ores by alkali fusion-iodometry |
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| Yang Fengping,Shao Guoqiang,Li Weiyan,Wang Ju,Guo Jiapeng,Su Guangdong,Mu Yan.Determination of arsenic in ores by alkali fusion-iodometry[J].Gold,2017,38(6). |
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| Authors: | Yang Fengping Shao Guoqiang Li Weiyan Wang Ju Guo Jiapeng Su Guangdong Mu Yan |
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| Abstract: | The alkali fusion-iodometry method is used to determine arsenic in ores,and the test conditions are optimized including the calibration of iodine standard solutions,fusion temperature and time,dosage of potassium iodide as reducing agents and saturated NaHCO3 solution.The relative standard deviation of the determination results is 0.40 ％-1.59 ％.The recovery rate with the addition of standard substance is 95.00 ％-103.20 ％.The determination results are proved to be accurate,consistent and the method is simple to carry out and fit for batch testing. |
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| Keywords: | alkali fusion iodometry arsenic mix Na2O2-Na2CO3 solvent calibration method |
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