摘要
采用乙醇溶液代替丙酮做为二苯碳酰二肼分光光度法测定水中铬(Ⅵ)的显色剂的溶剂,改进了GB/T5750-2006的方法,实验得知此方法和DZ/T 0064.17-93标准工作曲线线性良好。将两种方法应用于两种体系水中铬(Ⅵ)的测定,加标回收率达92%以上,均能满足准确度要求,由此可考虑简化测定铬(Ⅵ)的一般水样的保存方法,对以后测定水中铬(Ⅵ)的工作具有指导意义。
Ethanol solution was used instead of acetone as the solvent for the spectrophotometric determination of chromium(VI)in water by diphenylcarbazide.The method of GB/T5750-2006 was improved.The experimental results show that this method and DZ/T 0064.17-93 standard working curve have good linearity.The two methods are applied to the determination of chromium(VI)in water of two systems.The recovery rate of standard addition is over 92%,which can meet the accuracy requirement.Therefore,a simplified method for the preservation of general water samples for the determination of chromium(VI)can be considered,which has guiding significance for the future determination of chromium(VI)in water.
作者
代阿芳
范慧
黄依凡
DAI A-fang;FAN Hui;HUANG Yi-fan(Anhui Institute of Geological Experiment(Hefei Mineral Resources Supervision and Detection Center,Ministry of Land and Resources),Hefei 230001,China)
出处
《世界有色金属》
2019年第14期147-148,共2页
World Nonferrous Metals
关键词
二苯碳酰二肼分光光度法
水
铬(Ⅵ)
显色剂
diphenylcarbazide spectrophotometry
water
chromium(VI)
chromogenic agent
