摘要
基于金属硫化物溶度积差异,构建了以硝酸-盐酸-氢氟酸混酸体系高压密闭消解试样,用电感耦合等离子体质谱法测定电积废液硫化渣中Cu、Zn、Ni、Pb方法。依据丰度值大、干扰小原则,选取^(65)Cu、^(66)Zn、^(60)Ni、^(208)Pb为分析同位素。根据质量数就近原则,选取钇(Y)和铱(Ir)作内标元素。结果表明:采用本法测定硫化渣中的Cu、Zn、Ni、Pb,相对标准偏差(RSD)分别为0.83%、2.23%、4.69%、1.30%,检出限分别为0.018、0.007、0.002、0.005 g/kg;实际样品测定中,加标回收率为97.75%~100.64%;标准矿石加标回收误差≤0.02 g/kg;方法灵敏度高,测定结果准确,适用于硫化渣中Cu、Zn、Ni、Pb的实际检测。
Based on the solubility product of metal sulfides,the sample is high-pressure airtight digestied using nitric acid-hydrochloric acid-hydrofluoric acid mixed system and the content of Cu,Zn,Ni,and Pb is determined by inductively coupled plasma mass spectrometry.The sample is sulfide slag form a electrowinning waste liquid.According to the principle of large abundance value and small interference,^(65)Cu,^(66)Zn,^(60)Ni and ^(208)Pb are selected as analytical isotopes.According to the principle of mass number proximity,yttrium(Y)and iridium(Ir)are selected as internal standard elements.The determination results show that for Cu,Zn,Ni,and Pb in the slag,the relative standard deviations(RSD)are 0.83%,2.23%,4.69%and 1.30%,and the detection limits are 0.018,0.007,0.002,0.005 g/kg,respectively.For a actual sample,the recovery rate of standard addition is 97.75%~100.64%,the standard ore recovery error is≤0.02 g/kg.The method has high sensitivity and accurate determination results,and suitable for actual detection of Cu,Zn,Ni,Pb in sulfide slag.
作者
王福强
李维栋
降林华
张歌
徐初阳
韩晓东
WANG Fuqiang;LI Weidong;JIANG Linhua;ZHANG Ge;XU Chuyang;HAN Xiaodong(School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;School of Environmental Science and Engineering,Tongji University,Shanghai 200092;Cleaner Production and Circular Economy Research Center,Chinese Academy of Environmental Sciences,Beijing 100012,China)
出处
《湿法冶金》
CAS
北大核心
2022年第1期92-96,共5页
Hydrometallurgy of China
基金
国家自然科学基金资助项目(41877392)
水体污染控制与治理科技重大专项(2018ZX07701001)。
关键词
ICP-MS
高压密闭消解
硫化渣
溶度积
重金属
测定
ICP-MS
high pressure closed digestion
sulfide slag
solubility product
heavy metal
determination
