纳米银增强化学发光法测定塑料中的双酚A  

Silver nanoparticles enhanced chemiluminescence analysis for the determination of bisphenol A in plastic products

作　　者：杨猛[1] 马红燕[1] 

机构地区：[1]延安大学化学与化工学院,分析化学研究所,陕西延安716000

出　　处：《化学研究与应用》2012年第5期801-805,共5页Chemical Research and Application

基　　金：陕西省教育厅专项科研基金项目(09JK821)资助

摘　　要：研究发现在碱性介质中,纳米银对luminol-KMnO4化学发光体系的发光信号具有强烈的增敏作用,而双酚A对该体系具有明显的抑制作用,据此结合流动注射技术,建立了流动注射化学发光分析法测定塑料中双酚A的方法。该方法测定双酚A的线性范围为8.0×10-11～1.0×10-8g.mL-1(0.9926)和1.0×10-8～8.0×10-8g.mL-1(0.9916),检出限(3σ)为6.5×10-11g.mL-1。对5.0×10-10g.mL-1和5.0×10-8g.mL-1双酚A平行测定11次,其相对标准偏差为1.4%和1.0%。对反应机理进行了讨论。该方法简单、快速、灵敏度高,用于塑料制品中双酚A的测定,回收率为97.0%～105.0%。Silver nanoparticles （AgNPs） were found to enhance the chemiluminescence （CL） of the luminol-KMnO4 system, and bisphenol A could inhibit this CL signals in the medium of sodium hydroxide. Based on this inhibitive phenomenon, a flow injection CL method for the determination of bisphenol A in plastic products has been established. Under the optimized conditions, the linear range for the determination of bisphenol A was 8.0 x 10^-11 to 1.0 x10^-8 g - mL-1 （ 0. 9926 ） and 1.0 x 10-8 to 8.0 x 10-8 g . mL-1 （0. 9916 ） with a detection limit of 6. 5 x 10-H g . mL-1. The relative standard deviations for 11 repeated measurements of 5.0x 10-10g . mL-1 and 5. 0x 10-8 g .mL-1 bisphenol A were 1.4% and I. 0% , respectively. The possible mechanism of this chemiluminescence reaction was also proposed. The method has been successfully applied to the determination of bisphenol A in plastic products with recoveries in the range from 97.0% to 105.0%.

关 键 词：纳米银 化学发光法 塑料 双酚A 

分 类 号：O657.3[理学—分析化学]