碱消解-火焰原子吸收分光光度法测定固体废物中的六价铬  

Determination of Hexavalent Chromium in the Solid Waste by Alkaline Digestion-Flame Atomic Absorption Spectrophotometry

作　　者：季蕴佳[1] 周勤[1] 方爱红[1] 楼成林[1] 

机构地区：[1]上海市环境监测中心,上海200030

出　　处：《环境监测管理与技术》2012年第6期57-59,共3页The Administration and Technique of Environmental Monitoring

摘　　要：采用碱消解-火焰原子吸收分光光度法测定固体废物中的六价铬,样品消解温度控制在90℃～95℃范围内,消解时间为1 h,消解液pH值调节至9.0±0.2。方法检出限与测定下限分别为0.05 mg/kg与0.20 mg/kg,对不同基体实际样品平行测定的RSD为1.4%～13.0%,加标回收率为93%～130%。A method for determining Cr（VI） in the solid waste by alkali digestion-atomic absorption spec- trophotometry was developed. The pre-treatment conditions were discussed. The optimum digestion temperature of the samples should be at 90 ℃ -95 ℃, the digestion time was 60 minutes, and pH of the digestion fluid was 9.0 ＋ 0.2. The detection limit and reliable quantitation limit of this method were O. 05 mg/kg and 0.20 mg/kg respectively,the RSD of actual sample on the different matrix was 1.4% - 13.0% ,spiking recovery was 93% ~ 130%.

关 键 词：六价铬 碱消解 火焰原子吸收分光光度法 固体废物 

分 类 号：O657.31[理学—分析化学]