机构地区: 长江师范学院化学化工学院化学系
出 处: 《应用化学》 2007年第5期593-595,共3页
摘 要: 在酸性介质中,Ce(Ⅳ)可以氧化噻枯唑产生较弱的化学发光,罗丹明B可以显著增强此发光,且增加的发光强度与噻枯唑的质量浓度在一定范围内呈良好的线性关系,由此建立了测定噻枯唑的流动注射化学发光新方法。该法的检出限为12μg/L(3σ),线性范围为30~1 000μg/L,对500μg/L的噻枯唑连续平行测定11次,其相对标准偏差(RSD)为2.4%。用于测定环境水样中和大米中噻枯唑含量,回收率为96.4%~104.1%。 A novel chemiluminescence system for the determination of bismerthiazol is described in this paper. It is based on the chemiluminescence reaction of bismerthiazol and Ce(Ⅳ) in nitric acid solution. The emission intensity can be enhanced greatly by Rhodamine B. The chemiluminescence intensity was proportional to bismerthiazol concentration over a range of 30 -1 000μg/L. The detection limit was 12 μg/L(3σ) and the relative standard deviation was 2. 4% for 500 μg/L bismerthiazol( n = 11 ). The proposed method was successfully applied to the determination of bismerthiazol in water and in rice. The recovery was 96. 4% - 104. 1%.