期刊论文

中文

应用化工

1671-3206

2012

41

6

1080-1084

10.16581/j.cnki.issn1671-3206.2012.06.011

国家自然科学基金项目（21177052）；

本校为第一机构

在硫酸介质中,Pb~(2+)与过量I-形成配离子[PbI_4]~(2-),[PbI_4]~(2-)能与结晶紫(CV~+)阳离子形成电中性的离子缔合物,使体系的共振瑞利散射(RRS)增强,据此建立一种新的共振瑞利光散射法测定痕量结晶紫的新方法。在0.07 mol/L H_2SO_4、1.8×10~(-4)mol/L Pb~(2+)、过量I-及0.04%PVA等的存在条件下,RRS强度改变值(ΔI)与结晶紫的浓度在0.15~180μg/mL范围内呈良好的线性关系(r=0.998),方法检出限为0.08μg/mL,RSD

A novel resonance Rayleigh scattering （RRS） trace crystal violet （CV）. In sulfuric acid medium, Pb2＋ method was established for the determination of reacted with excessive I- to form a coordination ion [ PbI4 ] 2- , then [ PbI4 ] 2- reacted with CV cation （ CV ＊ ） results in increasing of RRS. Under the optimal experimental to form electroneutra： ionic associate which conditions which were 0.07 mol/L sulfuric acid, 1.8×10^-4moL/L Pb2＋, excessive I^- and 0.04% polyvinyl alcohol, the enhanced intensity of RRS （AI） was linear to the c...