离子选择电极法测定镀铬液中氯的研究  

Determination of chlorion in chrome-platting solution with ion selective electrode

作　　者：唐维学[1] 赖心[1] 

机构地区：[1]广州有色金属研究院分析测试中心,广东广州510650

出　　处：《冶金标准化与质量》2007年第2期24-26,共3页Metallurgical Standardization & Quality

摘　　要：用氯离子选择电极，通过多次标准添加作图法测定镀铬液中的氯离子，用乙醇-乙酸及过氧化氢还原来消除对测定有干扰的大量铬酸根，该法简单快速，相对标准偏差小于2．0％，加料回送率为96％-104％，最低可测定氯离子含量为0．2μg／mL。Chlorion in chrome - platting solution has been determined by the standard addition method with the chlorion selective electrode, The interference of chromate can be eliminated by the ethanol - acetic acid - hydrogen peroxide system. The proposed procedure is simple and rapid; the relative standard deviation of which is less than 2.0 % and the standard ad- dition recovery 96% - 104%. The content of chlorion for determination is as low as 0.2μg/mL.

关 键 词：离子选择电极 氯离子 铬酸根 

分 类 号：TQ153.1[化学工程—电化学工业]