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流动注射化学发光法测定抗蚜威
Determination of Pirimicarb by Flow Injection Combined with Chemiluminescence
【摘要】 在多聚磷酸钠介质中,抗蚜威能显著增强RhB-Cu2+-H2O2体系的化学发光强度。基于此,结合流动注射技术,建立了测定抗蚜威的流动注射化学发光新方法。该法的检出限为58μg/L(3σ);线性范围为0.1~10 mg/L;对1.0 mg/L的抗蚜威连续平行测定11次,其相对标准偏差(RSD)为2.8%。该方法灵敏、简单、快速。用于农田水、乌江水、长江水以及自来水中抗蚜威含量的测定,回收率为95.5%~100.9%,结果令人满意。
【Abstract】 A novel chemiluminescence(CL) system for the determination of pirimicarb in water was(described).In sodium polyphosphate medium,hydroxyl radical generated from the reaction of Cu2+ with H2O2 could oxidize rhodamine B to produce CL.Pirimicarb can enhance the CL intensity.The linear range of this system was 0.1-10 mg/L and the detection limit was 58 μg/L(3σ).The relative standard deviation was 2.8% for 1.0 mg/L of pirimicarb(n=11).The mechanism of the CL system was also(discussed).The(proposed) method was sensitive,simple,rapid,and has was successfully applied to the determination of pirimicarb in water environment.The mean recovery was 95.5%-100.9%.
【Key words】 Rhodamine B; pirimicarb; flow injection analysis; chemiluminescence;
- 【文献出处】 分析化学 ,Chinese Journal of Analytical Chemistry , 编辑部邮箱 ,2006年11期
- 【分类号】X839.2
- 【被引频次】10
- 【下载频次】143