论文部分内容阅读
在pH3．0的HAc－NaAc缓冲溶液中和有TritonX-100存在下，二氯化双（丁氧羰乙基）锡（简写为R2SnCl2）与桑色素形成1：1的荧光络合物。络合物的激发波长和发射波长分别为443．2um和514．4um。R2SnCl2中的Sn浓度在0－3.0mg／L范围内，与络合物荧光强度呈线性关系。方法检出限为7．81μg／LSn，用于PVC中间产品和污水中R2SnCl2的测定，结果满意，相对标准偏差分别为0．82％和0．61％，回收率在97．5％－99．2％之间。
Bis (butoxycarbonylethyl) tin dichloride (abbreviated R2SnCl2) forms a 1: 1 fluorescent complex with morin in the presence of Triton X-100 in HAc-NaAc buffer at pH 3.0. The excitation and emission wavelengths of the complexes were 443.2um and 514.4um, respectively. The concentration of Sn in R2SnCl2 was in the range of 0-3.0 mg / L, which showed a linear relationship with the fluorescence intensity of complex. The method detection limit was 7.81μg / LSn, which was used for the determination of R2SnCl2 in PVC intermediate and wastewater. The results were satisfactory with relative standard deviations of 0.82% and 0.61%, respectively. The recovery was 97.5% -99 .2% between.