摘要
用分光光度法测定水中高锰酸盐指数。方法检出限为0.05mg/L。对实际水样进行连续5次测定,方法精密度为1.01%～1.20%,回收率为95.0%～100.5%。经国家标准容量法验证,结果与标准方法测定值相符。方法简便快速,灵敏度高,精密度好,试剂试样量少,成本低,适用于测定氯化物低于300mg/L、清洁或污染轻微的水样高锰酸盐指数的分析。
The permanganate index in surface water and groundwater was determined by ultraviolet-visible spectrophotometry.The detection limit of the method was 0.05 mg/L and the recoveries were 95.0% ～ 100.5% with precision of 1.01% ～ 1.20% RSD （n=5）.The analytical results from this method are consistent with those determined by standard volumetric method.The method provides the advantages of high sensitivity and precision,high efficiency,less cost and is suitable for the determination of permanganate index in clean or slight polluted surface water and groundwater samples with chloride content of 300 mg/L.
出处
《岩矿测试》
CAS
CSCD
北大核心
2010年第5期617-620,共4页
Rock and Mineral Analysis
基金
国土资源地质大调查--地下水污染测试技术研究项目资助(1212010634607)
关键词
分光光度法
高锰酸盐指数
地表水
地下水
spectrophotometry
permanganate index
surface water
groundwater
