(2,6-二溴-4-硝基苯)-3-(4-硝基苯)-三氮烯与银(Ⅰ)的显色反应及其应用  

The Color Reaction of(2,6-Dibromo-4-Nitrophenyl)-3-(4-Nitrophenyl)-Triazene with Silver and Its Application

作　　者：王智敏[1] 申屠超[1] 李成平[1] 严小平[1] 邵波[1] 王芳权[1] 

机构地区：[1]浙江树人大学生物与环境工程学院,杭州310015

出　　处：《分析科学学报》2006年第5期585-587,共3页Journal of Analytical Science

摘　　要：研究了1-（2，6-二溴-4-硝基苯）-3-（4-硝基苯）-三氮烯（DBNPNPT）与Ag（Ⅰ）的显色反应。在Na2B4O7-NaOH缓冲溶液（pH-10．0）中和在Triton X—100存在下，试剂与Ag（Ⅰ）生成1：1的配合物。该配合物在波长445nm处有正吸收峰，在530nm有负吸收峰，用双峰双波长法测得配合物的表观摩尔吸光系数为2．06×10^5L·mol^-1，符合比耳定律的范围为0～12μg／25mL。该法已用于回收定影液中银（Ⅰ）的测定，结果满意。The ehromogenie reaction of 1-（2,6-dibromo-4-nitrophenyl）-3-（4-nitrophenyl）-triazene with silver has been discussed in this paper. In the buffer solution of Na2B4O7-NaOH（pH 10.0） and with the existence of surfactant of Triton X-100 , the chromogenic reagent reacted with silver to form a complex with molar ratio of 1：1. This compound had a positive peak at 445 nm and a negative peak at 530 nm. The apparent molar absorptivity was 2. 06 × 10^5 L·mol^-1· cm^-1 with double peaks and double wavelengths method. Beer＇s law was obeyed in the concentration range of 0-12μg/25mL. The method has been employed to determine the trace amounts of silver in photographic waste solution with satisfactory results.

关 键 词：1-(2 6-二溴-4-硝基苯)-3-(4-硝基苯)-三氮烯 银 显色反应 

分 类 号：O657.32[理学—分析化学]