环境水中铬(Ⅵ)的快速测定  

Quick analysis of chromium(Ⅵ) in environmental water

作　　者：邓金花[1] 吴清平[1] 廖富迎[1] 

机构地区：[1]广东环凯微生物科技有限公司,广东广州510070

出　　处：《工业水处理》2006年第2期62-63,共2页Industrial Water Treatment

摘　　要：采用合适的固体助溶剂和固体酸,将二苯碳酰二肼分光光度法应用于水中铬(Ⅵ)的测定。络合物的最大吸收波长为540nm,表观摩尔吸光系数为4.06×104L/(mol.cm),含铬(Ⅵ)质量浓度在0～0.5mg/L范围内符合比尔定律,常见的共存离子均不干扰测定。混合试剂保存期长,是一种准确、灵敏、快速、简便的铬(Ⅵ)的测定方法。1,5- Diphenylcarbohydrazide spectrophotometric method has been applied in determining chromium （Ⅵ） in environmental water with suitable solid solubilizer and solid acid. The complex has a maximum absorption at 540 nm and an apparent molar absorptivity of 4.06 × 10^4 L/（mol. cm）. Beer＇s law is obeyed in the range of 0 ～ 0.5 mg/L for chromium （Ⅵ）. The familiar concomitant ions will not disturb the determination. The mixed reagent has a long period of validity. The method is accurate, sensitive, raoid and simple for the determination of chromium （Ⅵ ）.

关 键 词：铬(Ⅵ) 分光光度法 二苯碳酰二肼 增溶剂 

分 类 号：O657.3[理学—分析化学]