含硫氰酸盐水质中低浓度氰化物的测定  

Determination of low concentrations of cyanide in water containing thiocyanate

作　　者：张灵芝 贾国宁 徐梦鸿 张悦 孔令姝 Zhang Lingzhi;Jia Guoning;Xu Menghong;Zhang Yue;Kong Lingshu(Changchun Gold Research Institute Co.,Ltd;National Quality Inspection and Testing Center for Gold&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检验检测中心(长春)

出　　处：《黄金》2023年第12期97-99,共3页Gold

基　　金：吉林省科技发展计划项目(20220203101SF)。

摘　　要：黄金工业废水中常含有硫氰酸盐,测定低浓度氰化物时,存在测定结果偏高、重复性差等问题。研究建立了含硫氰酸盐水质中低浓度氰化物的测定方法,采用异烟酸-吡唑啉酮分光光度法测定馏出液中硫氰酸盐氰贡献值校准氰化物。本方法的精密度(RSD)小于4%,加标回收率为94%~102%,准确度和精密度良好。Gold industrial wastewater often contains thiocyanate,and there are problems such as higher measurement results and poor repeatability when measuring low concentrations of cyanide.A method for determining low concentrations of cyanide in water containing thiocyanate was developed,using isonicotinic acid-pyrazolone spectrophotometry to measure the cyanide the calibrates cntribution value in thiocyanate in the distillate.The precision of this method is less than 4%,with spike recoveries ranging from 94%to 102%,indicating good accuracy and precision.

关 键 词：硫氰酸盐 氰化物 干扰 异烟酸-吡唑啉酮分光光度法 低浓度 

分 类 号：O661.1[理学—分析化学]