基于浊度法的贵金属合金电镀废水中氯离子含量的测定  

Determination of Chloride Ion Content in Noble Metal Alloy ElectroplatingWastewater Based on Turbidimetric Method

作　　者：刘晓杰 李尚远 徐剑瑛 王雷 陈红灵 于海龙 LIU Xiao-jie;LI Shang-yuan;XU Jian-ying;WANG Lei;CHEN Hong-ling;YU Hai-long(Shandong Zhaojin Gold&Silver Refinery Co.,Ltd.,Shandong Yantai 265400;ZHN Precious Metals Testing Co.,Ltd.,Shandong Yantai 265400,China)

机构地区：[1]山东招金金银精炼有限公司,山东烟台265400 [2]中恒诺贵金属检测有限公司,山东烟台265400

出　　处：《广州化工》2024年第6期204-207,218,共5页GuangZhou Chemical Industry

摘　　要：目前,对于贵金属合金电镀废水中氯离子含量的测定,国内、国外还没有专门的标准。研究建立了一种基于浊度法的贵金属合金电镀废水中氯离子含量的测定方法。通过对一系列条件实验的研究,确定了选择无水乙醇作为分散剂,亚硫酸钠加入量为10 mL,加热温度为70℃,加热时间为8 min,并在此条件下进行了准确度和精密度实验。本方法加标回收率为98.67%~102.00%,重复性相对标准偏差为0.23%~2.68%。At present,there was no special standard for the determination of chloride ion content in precious metal alloy electroplating wastewater.A method for the determination of chloride ion in precious metal alloy electroplating wastewater based on turbidity method was developed.Through the study of a series of conditional experiments,it was determined that anhydrous ethanol was selected as the dispersant,the amount of sodium sulfite was 10 mL,the heating temperature was 70℃,the heating time was 8 min,and the accuracy and precision experiments were carried out under these conditions.The recoveries were 98.67%~-102.00%,and the relative standard deviations were 0.23%~2.68%.

关 键 词：浊度法 贵金属合金 电镀废水 氯离子含量 

分 类 号：TQ124.4[化学工程—无机化工]