流动注射-抑制化学发光法测定多氯酚  

FI-Inhibitory Chemiluminescence Determination of Chiorophenols

作　　者：付小宁[1] 陈改荣[1] 范顺利[2] 

机构地区：[1]新乡学院化学与环境工程学院,新乡453003 [2]河南师范大学化学与环境科学学院,新乡453007

出　　处：《理化检验（化学分册）》2009年第11期1282-1284,1288,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：基于在酸性介质中多氯酚抑制可溶性锰(Ⅳ)-罗丹明B体系的化学发光,提出了流动注射-抑制化学发光法测定4种多氯酚(2-氯酚、2,4-二氯酚、2,4,6-三氯酚、五氯酚)含量的方法。4种多氯酚的发光强度的降低值△I与其质量浓度在一定范围内呈线性关系,检出限(3s)分别为5.7×10^(-7),4.9×10^(-7),5.5×10^(-7)和6.9×10^(-7)mol·L^(-1)。应用此法测定水样中4种多氯酚,回收率在88.0%～102.0%之间,相对标准偏差(n=5)在2.6%～5.3%之间。Based on the inhibitory chemiluminescence effect of chlorophenols on Mn（Ⅳ）-RDB system in an acidic medium, a method for the determination of four chlorophenols （2-chlorophenol, 2, 4-dichlorophen, 2, 4, 6- triehlorophen and pentachlorophenol） by FI-inhibitory chemiluminescence （CL） was proposed. Linear relationships between the magnitude of decrease in CL intensity AI（△I= I0 --I） and mass concentration of the 4 chlorophenols were obtained in definite ranges. The detection limits （3s） of 2-chlorophenol, 2, 4-dichlorophen, 2, 4, 6- trichlorophen and pentachlorophenol were 5. 7×10^-7 , 4. 9 ×10^-7 , 5. 5 ×10^-7 and 6. 9 ×10^-7 mol · L^-1 respectively. The proposed method was used in the analysis of water sample, giving the values of recovery in the range of 88.0%-102.0% and RSD＇s （n=5） in the range of 2. 6%--5. 3%.

关 键 词：抑制化学发光 流动注射 多氯酚 锰(Ⅳ) 

分 类 号：O657.3[理学—分析化学]