氯离子选择性电极直接测定锌铟电解液中氯离子含量  

Direct determination of chlorine ion content in zinc-indium electrolyte by chlorine ion selective electrode

作　　者：韦文业 

机构地区：[1]广西现代职业技术学院资源工程系,广西河池547000

出　　处：《冶金分析》2011年第8期65-68,共4页Metallurgical Analysis

摘　　要：针对氯离子选择性电极直接测定锌铟电解液中氯离子含量的方法,对离子强度调节剂的选择和用量、溶液酸度、硫酸锌浓度、铟浓度以及其他共存离子的影响进行了探讨。研究表明,在硫酸介质中加入冰醋酸和硝酸钾作离子强度调节剂,用氯离子选择性电极可以直接快速地测定锌铟电解液中氯离子的含量,且溶液中铟离子浓度在0.04 g/mL以下、硫酸锌浓度在0.15 g/mL以下不干扰测定,样品中含有的各种杂质元素对测定也无明显干扰。将方法应用于锌铟电解液样品的测定,相对标准偏差小于6.0%,测定结果与比浊法一致。A direct determination of chlorine ion in zinc indium electrolyte by chlorine ion selective electrode was proposed.The selection and dosage of ionic strength adjustor,the influences of solution acidity,concentration of zinc sulfate and indium,and other existing ions were discussed.The results showed that,the chlorine ion content in zinc indium electrolyte could be directly and rapidly determined by chlorine ion selective electrode using glacial acetic acid and potassium nitrate as ionic strength adjustor in sulfuric acid medium.Moreover,when the concentration of indium ion was below 0.04 μg/mL,the zinc sulfate（0.15 g/mL） did not interfere in the determination.Other impurity elements in sample also had no obvious interference in the determination.The proposed method was applied to the determination of chlorine ion in zinc indium electrolyte sample.The relative standard deviation（RSD） was smaller than 6.0 %,and the determination results were consistent with those obtained by turbidimetry

关 键 词：离子选择性电极 锌 铟 电解液 氯离子 

分 类 号：TF801.3[冶金工程—有色金属冶金]