对氯苯重氮氨基偶氮苯与银(Ⅰ)显色反应的研究及其应用  

STUDY ON THE COLOR REACTION OF 1-p-CHLOROBENZENE-3-AZOBENZENE-TRIAZENE WITH SILVER(Ⅰ) AND ITS APPLICATION

作　　者：周能[1] 赵书林[1] 黄中强[2] 

机构地区：[1]广西师范大学化学化工系,桂林541004 [2]广西玉林师范学院化学与生物学系,玉林537000

出　　处：《化学分析计量》2003年第4期16-18,共3页Chemical Analysis And Meterage

摘　　要：研究对氯苯重氮氨基偶氮苯在TritonX-100存在下与银(I)的显色反应。在pH=11．0的硼砂-氢氧化钠缓冲溶液中，对氯苯重氮氨基偶氮苯与银(I)形成1：1的橙红色配合物，其最大吸收波长为504nm，表观摩尔吸光系数ε=6．20×10^4L／(mol·cm)，银(I)的浓度在0～10．0μg／(25mL)范围内符合比耳定律，线性回归方程为A=0．0228c+0．00188，相关系数r=0．9997。方法应用于实验室废液和银锌纽扣电池液中银的测定，加标回收率分别为97％、102％，相对标准偏差分别为4．6％、2．5％。In presence of Titonx-100, the color reaction of 1-p-chlorobenzene-3-azobenzene-triazene with silver(Ⅰ) was studied. In borax-NaOH buffer solution, silver(Ⅰ) reacts with 1-p-chlorobenzene-3-azobenzene-triazene, generating a salmon complex in the proportion of 1: 1. The maximum absorption of the complex is at 504 nm, and the apparent molar absorptivity is 6. 20 ×104 L/( mol· cm). Beer's law is obeyed for silver(Ⅰ) in the range of 0-10.0 μg/(25 mL). The linear regression equation is A = 0.0228c + 0. 00188, the correlative coefficient is 0. 9997. This method was applied to determine trace silver in experimental waste solution of laboratory and silver-zinc button cell solution, the recoveries are 97% and 102% , the relative standard deviations are 4. 6% and 2. 5% respectively.

关 键 词：对氯苯重氮氨基偶氮苯 银(I) 显色反应 分光光度法 测定 

分 类 号：O614.122[理学—无机化学] O657.3[理学—化学]