摘要
在酸性介质中硫酸铈与甲萘威作用，有微弱的发光现象，基于罗丹明B对该发光反应有明显的增敏效果，结合流动注射技术建立了一种测定甲萘威的简便快捷灵敏的方法。该方法的检出限为5．6×10^-9mol／L，线性范围是2．0×10^6～1．0×^10^-4～mol／L。对1．0×10^-5mol／L的甲萘威进行了11次连续平行测定，相对标准偏差为1.8％。对饮用水源中甲萘威的测定，回收率为95．4％～104．0％，其结果令人满意。
A simple, sensitive and rapid flow-injection chemiluminescence analysis has been developed for the determination of carbaryl based on the chemiluminescence reaction of carbaryl with ceric sulfate in a sulphuric acid medium which could be augmented by Rhodamine B. A strong chemiluminescence signal was observed when carbaryl was injected into the acidic ceric sulfate solution in a flow-cell. The present method allowed the determination of carbaryl in a concentration range of 2.0×10^-6 to 1.0×10^-4 mol/L and the detection limit for carbaryl was 5.6×10^-9 mol/L. The relative standard deviation was 1.8 % for 11 replicate analyses of 1.0×10^-5 mol/L carbaryl. The proposed method was applied to the determination of carbaryl in water with satisfactory results.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第7期66-69,共4页
Journal of Southwest University(Natural Science Edition)
基金
重庆市自然科学基金资助项目(CSTC2006BB0342)
关键词
硫酸铈
罗丹明B
化学发光
流动注射
ceric sulfate
Rhodamine B
chemiluminescence
flow-injection analysis
