应用化学2011，Vol.28Issue(11)：1331-1336,6.DOI:10.3724/SP.J.1095.2011.00733
多菌灵与Pd(Ⅱ)体系的共振瑞利散射光谱及分析应用
Resonance Rayleigh Scattering Spectra of CarbendazimPd(Ⅱ) System and Its Analytical Application
摘要
Abstract
In a Britton-Robinson(BR) buffer solution of pH = 10. 0, Pd( II ) and carbendazim ( CBZ) can form a 1=1 chelate complex. As a result, new spectra of resonance Rayleigh scattering( RRS) , second-order scattering (SOS) , and frequency doubling scattering (FDS) appears and their intensities are enhanced greatly. The maximum wavelengths of RRS, SOS and FDS are located at 309 nm, 606 nm and 310 nm, and their intensities are proportional to- the concentration of CBZ in certain ranges. The methods have a high sensitivity with the detection limit of 7. 1 x 10-9 g/mL for RRS method, 7. 4 x 10-9 g/mL for SOS method and 1.07 x 10-8 g/mL for FDS method, respectively. Based on the above results, a new light scattering method for the determination of trace amounts of CBZ has been developed. The RRS method with the highest sensitivity is taken for the determination of carbendazim in celery and wettable powder. The results are consistent with those of the GB method. In addition, the reaction mechanism and the reasons of the enhancement of resonance light scattering are discussed.关键词
多菌灵/Pd(Ⅱ)/共振瑞利散射/二级散射/倍频散射Key words
carbendazim/ palladium ( II ) / resonance Rayleigh scattering/ second-order scattering/ frequency doubling scattering分类
化学化工引用本文复制引用
崔志平,刘绍璞,刘忠芳,胡小莉..多菌灵与Pd(Ⅱ)体系的共振瑞利散射光谱及分析应用[J].应用化学,2011,28(11):1331-1336,6.基金项目
国家自然科学基金(20875078)和西南大学大型仪器设备开放基金(201005)资助项目 （20875078）
