钨酸钠共振光散射法测定维多利亚蓝B  

Determination of Victoria Blue with Na_2WO_4 by a Resonance Light Scattering Method

作　　者：谢立[1] 陈影 田庆[1] 符小芳 连鹏[1] 赵小辉[1] 

机构地区：[1]长江师范学院化学化工学院三峡库区环境监测与灾害防治工程研究中心,重庆408000 [2]重庆市涪陵城区第十一小学校,重庆408000

出　　处：《广州化工》2014年第24期125-126,169,共3页GuangZhou Chemical Industry

基　　金：长江师范学院大学生创新创业训练计划项目(No.2013dcxm48);长江师范学院科研创新团队建设计划项目(2014XJTD02)

摘　　要：在pH=5.33缓冲溶液中,维多利亚蓝B(Victoria blue)与钨酸钠作用并产生以281 nm和373 nm为特征峰的共振光散射(RLS)增强信号。在上述特征波长下测定的增强共振光散射强度(ΔIRLS)与维多利亚蓝B浓度在一定范围内呈线性关系。当钨酸钠浓度为4.0×10-5mol/L时,维多利亚蓝B的检出限可分别达8.74 nmol/L和10.77 nmol/L。据此建立了痕量维多利亚蓝B的共振光散射分析方法。In pH=5. 33 buffer solution, victoria blue reacted with Na2 WO4 , resonance light scattering （ RLS） was generated with signals at 281nm and 373nm. It was found that the enhanced RLS intensities （△IRLS ） at 281 nm and 373 nm were proportional to the concentration of victoria blue. The determination limits of victoria blue are 8. 74 nmoL/L and 10. 77 nmol/L, respectively, when 4. 0 × 10^-5 mol/L Na2 WO4 was employed for victoria blue. The new method for trace victoria blue could be established accordingly.

关 键 词：维多利亚蓝B 钨酸钠 共振光散射 

分 类 号：O69[理学—化学]