《黄金》杂志(月刊) 第39卷 总第414期
2018年06月 第06期
目次
分析测试
  • 矿石中铅量测定方法的补正……姜莹,陈永红,孟宪伟,葛仲义,关国军
  • 摘 要:采用国标法测定矿石中的铅量时,存在测定结果偏低或流程长、操作繁琐等问题,研究建立了矿石中铅量测定的补正方法。实验选择硝酸-氯酸钾溶液溶解试样,之后过滤分离,分别测定沉淀与滤液中铅量,二者加和即为矿石中铅量。该方法测定结果的相对标准偏差为0.06 %0.16 %,加入标准物质回收率为98.25 %103.00 %,提高了未知矿样测定的准确度,且操作简单,流程短。

    Supplementfor the method of lead content determination in ores……Jiang Ying,Chen Yonghong,Meng Xianwei,Ge Zhongyi,Guan Guojun

    AbstractThe national standard method of lead content determination in ores haslower results and is lengthy in flow sheet and operation,so the paperestablished a method to supplement it.The experiment dissolves samples withnitric acid-potassium chlorate solution and the lead content in the sedimentand the filtrate are determined respectively after filtration and separation;the lead content in ores are the sum up of the lead in filtrate andprecipitation.The RSD of the method is 0.06 %-0.16 %.The recovery rate ofreference material is 98.25 %-103.00 %.The method has higher precision,theoperation is easy and the flow sheet is short.

    Keywords:ore; lead; supplement; volumetric method; atomic absorption spectrometry

  • 关键词:矿石;铅;补正;容量法;原子吸收光谱法
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