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《Journal of Anhui Normal University(Natural Science)》 2009-01
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Detecting Estrogens Based on the Catalysis of Au-Ag Composite Nanoparticles to Luminol-H_2O_2 CL System

DAI Lu,WANG Lun(College of Chemistry and Materials Science,Anhui Normal University,Wuhu 241000,China)  
Au-Ag composite nanoparticles were found to enhance the chemiluminescence(CL) of the luminol-hydrogen peroxide system,and estrogens could inhibit this CL signals in alkaline solution.Based on this inhibitive phenomenon,a flow injection CL method for the determination of three natural estrogens has been established.Under the optimized conditions,the linear range for the determination of estrogens was 1.0×10-6-4.0×10-8 for estrone,1.0×10-5-1.0×10-7 for estradiol and 1.0×10-5-7.0×10-8 for estriol.The detection limit were 4.3×10-9mol·L-1 for estrone,3.9×10-8mol·L-1 for estradiol and 6.5×10-9mol·L-1 for estriol with the R.S.D.2.7%,1.8 % and 2.3%,respectively.This method has been used for analysis of estrogens in urine samples from pregnant women.
【Fund】: 国家自然科学基金项目(20575001);; 安徽省教育厅自然科学项目(KJ2007B166)
【CateGory Index】: R927
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