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含硫化物、硫氰酸盐水质中易释放氰化物测定方法研究

  • 作者:
  • 葛仲义|陈永红|王菊|张灵芝|芦新根|孟宪伟
  • 作者单位:
  • 长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)|长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)|长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)|长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)|长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)|长春黄金研究院有限公司&国家金银及制品质量监督检验中心(长春)
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 葛仲义(1985—),男,黑龙江齐齐哈尔人,工程师,从事矿物分析测试及化学分析方法研究工作;长春市南湖大路6760号,长春黄金研究院有限公司测试中心,130012;E-mail:1262998367@qq.com
  • 通讯作者:
  • isnull
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Methods for WAD cyanide determination in water containing sulfide and thiocyanate

  • English Author:
  • Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)|Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)|Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)|Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)|Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)|Changchun Gold Research Institute Co.,Ltd.&National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun)
  • Unit:
  • 摘要
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  • 参考文献

摘要:

研究建立了含硫化物、硫氰酸盐水质中易释放氰化物的测定方法,采用硝酸银作为掩蔽剂,同时结合两次蒸馏去除硫化物、硫氰酸盐的干扰,馏出液采用氢氧化钠溶液吸收。对于氰化物质量浓度较高的样品采用硝酸银滴定法测定,氰化物质量浓度低的样品采用异烟酸-吡唑啉酮法测定。该方法测定结果的相对标准偏差为0.51 %~3.51 %,加标回收率为95.6 %~104.2 %,具有操作简单、成本低和准确度高的优点。

关键词:

易释放氰化物;硫化物;硫氰酸盐;硝酸银滴定法;分光光度法

Abstract:

The determination methods for WAD cyanide in water with sulfide and thiocyanate content are established in the study.Silver nitrate is used as masking agent to eliminate the interference of sulfide and thiocyanate with the help of twice distillation.The distilled solution is absorbed with sodium hydroxide.Silver nitrate titration method is used to determine the samples with higher WAD cyanide mass concentration,while isonicotinic acid-pyrazolone methed is used to determine the samples with lower WAD cyanide mass concentration.The RSD of the determination results using this method is 0.51 %-3.51 %,and the recovery rate of reference materials is 95.6 %-104.2 %.The method is easy to operate,low-cost and accurate.

Keywords:

WAD cyanide;sulfide;thiocyanate;silver nitrate titration;spectrophotometry