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作 者:杨冉[1] 曾华金[2] 李建军[1] 郑伟[1] 屈凌波[1,3]
机构地区:[1]郑州大学化学系,郑州450001 [2]郑州大学药学院,郑州450001 [3]河南工业大学化学化工学院,郑州450001
出 处:《理化检验(化学分册)》2011年第7期831-833,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
摘 要:在0.12mol·L^(-1)硫酸介质中,由1.0×10^(-3)mol·L^(-1)硫酸铈溶液与2.0×10^(-4)mol·L^(-1)Ru(bpy)_3^(2+)溶液反应产生的化学发光强度因盐酸雷诺嗪的存在而明显增强。试验表明:盐酸雷诺嗪的质量浓度在0.1~2.0mg·L^(-1)及2.0~10.0mg·L^(-1)两范围内分别与相应的化学发光强度的增强值之间呈线性关系。方法的检出限(3S/N)为0.062mg·L^(-1)。试验及分析中采用Sirius V3.1化学发光仪。反应时,上述两试剂溶液及样品溶液的进样顺序及引入的体积依次为:硫酸铈溶液50μL,Ru(bpy)_3^(2-)溶液50μL及样品溶液10μL。反应4s后发光强度达到最大值。在模拟样品基体中,分别加入0.250,0.500,0.750g盐酸雷诺嗪标准品进行回收试验,测得回收率在97.6%~102.4%之间,测定值的相对标准偏差(n=10)均小于2%。In 0.12 mol·L^(-1) H_2SO_4 solution,the chemiluminescence(CL) intensity emitted by the reaction between 10×10^(-3) mol·L^(-1) Ce(SO_4)_2 solution and 2.0×10^(-4) mol·L^(-1) Ru(bpy)_3^(2+) solution was significantly enhanced by ranolazine and linear relationship between values of increase in CL intensity and mass concentration of ranolazine was obtained in the ranges of 0.1-2.0 mg·L^(-1) and 2.0-10.0 mg·L^(-1) separately.Detection limit (3S/N) found was 0.062 mg·L^(-1).The CL analyzer(model Sirius V3.1) was used in the testing and analysis. Addition of reagent and sample solutions should be carried out in the order of Ce(SO_4)_2 solution,Ru(bpy)_3^(2+) solution and sample solution with their volume of 50,50,10μL separately.The CL intensity attained to a maximum value after reaction for 4 s.Recovery was tested by addition of ranolazine standard in 3 mass levels(0.250,0.500 and 0.750 g) to a simulated sample,values of recovery found were in the range from 97.6%to 102.4%with values of RSD's(n=10) less than 2%.
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