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。
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 io-dide as reducing agents and saturated NaHC0 3 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 determi-nation results are proved to be accurate consistent and the method is simple to carry out and fit for batch testing.
出处
《黄金》
CAS
2017年第6期69-71,共3页
Gold
