浊点萃取-火焰原子吸收联用法对微量锰的研究  

Cloud Point Extraction Research on Traces of Manganese with Flame Atomic Absorption Spectrometry

作　　者：陈姚[1] 张宏[1,2] 罗娅君[3] 王秀峰[3] 

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610066 [2]四川师范大学生命科学学院,四川成都610101 [3]绵阳师范学院化学与化学工程学院,四川绵阳621000

出　　处：《四川师范大学学报（自然科学版）》2015年第2期275-279,共5页Journal of Sichuan Normal University（Natural Science）

基　　金：四川省教育厅自然科学重点基金(12ZA079和12ZA081);绵阳市科技局基金(13G002-2)资助项目

摘　　要：利用络合剂8-羟基喹啉和表面活性剂Triton X-100建立了浊点萃取-火焰原子吸收光谱联用的新方法测定实际样品中锰的含量.通过实验优化了络合剂、表面活性剂、平衡温度、离子强度、pH值等工作参数,并利用火焰原子吸收光谱法进行了样品测定.结果显示,该方法最低检出限为0.05μg/L（n=11）,最大富集因子为11,其RSD最大为2.41%,线性范围0.00-20.00μg/mL.该方法用于实际样品味精中微量Mn的分析,回收率95.2%-97.4%,取得了满意的结果.This paper reports a new method to determine traces of manganese in monosodium glutamate by cloud point extractionflame atomic absorption spectrometry. 8-hydroxyquinoline was used as complexing agent and Triton X-100 was used as the extraction agent. The parameters of complexing agent dosage,equilibrium time,equilibrium temperature,ionic strength and pH were optinized.The results showed that the detection limit was 0. 05 μg / L,the enrichment factor was 11 and the relative standard deviation was2. 41%. The linear range was from 0. 00 μg / mL to 20. 00 μg / mL. The method was applied to determine traces of manganese in monosodium glutamate,the perlant recovery was 95. 2% - 97. 4%,the obtained results are satisfied.

关 键 词：湿法消解 锰 浊点萃取 火焰原子吸收光谱法 

分 类 号：O657[理学—分析化学]