含硫氰酸盐、硫化物固体废物中总氰化合物测定方法  

Determination method for total cyanide in solid wastes containing thiocyanate and sulfide

作　　者：柳华丽 葛仲义 陈永红 王菊 张灵芝 肖千鹏 Liu Huali;Ge Zhongyi;Chen Yonghong;Wang Ju;Zhang Lingzhi;Xiao Qianpeng(Changchun Gold Research Institute Co.,Ltd.;National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun))

机构地区：[1]长春黄金研究院有限公司 [2]国家金银及制品质量监督检验中心(长春)

出　　处：《黄金》2022年第5期97-100,共4页Gold

摘　　要：实验建立了含硫氰酸盐、硫化物固体废物中总氰化合物的测定方法,采用硝酸银滴定法、异烟酸-吡唑啉酮分光光度法分别测定总氰化合物含量高、低的样品。通过条件实验优化了前处理方式、称样量和干扰去除方法。该方法测定结果的相对标准偏差为0.43%~1.33%,加入标准物质回收率为91.5%~101.5%,精密度和准确度良好,符合测定要求。The experiment established a determination method for total cyanide in solid wastes containing thiocyanate and sulfide,where silver nitrate titration and isonicotinic acid-pyrazolone spectrophotometry are used to determine the samples with high and low contents of cyanide respectively.Condition test was carried out to optimize the pre-treatment means,sample weight and interference elimination method.The method has a RSD of 0.43%-1.33%,recovery rate of 91.5%-101.5%,good precision and accuracy,and meets the determination requirements.

关 键 词：固体废物 硝酸银滴定法 异烟酸-吡唑啉酮分光光度法 硫氰酸盐 硫化物 总氰化合物 

分 类 号：TD926.3[矿业工程—选矿] O655.2[理学—分析化学]