摘要
合成了一种新的杂环三氮烯显色剂1-(2-苯并噻唑)-3-(4-溴苯)-三氮烯(BTBPT)。在Na2B4O7-NaOH缓冲介质中,BTBPT在非离子表面活性剂Triton X-100存在下与Cd形成1:2的稳定配合物,其表观摩尔吸光系数为1.75×105L·mol-1·cm-1,镉量在0～10μg/25mL范围内遵守比尔定律。方法应用于废水样中CA2’的测定,获得了较为满意的结果。
A new heterocyclic triazene color reagent BTB-PT was synthesized. In a Na2B4O7-NaOH buffer solution, the color reagent BTBPT reacted with Cd(Ⅱ) ion to form a sensitive color complex in the presence of surface active agent Triton X-100. The molar absorptivity was 1. 75×105L · mol-1· cm-1. Beer's law was obeyed in the range of 0 - 10μg/25mL. This reagent has been used to test Cd2+ in waste water successfully.
出处
《化学试剂》
CAS
CSCD
北大核心
2003年第5期277-278,共2页
Chemical Reagents
关键词
杂环三氮烯试剂
BTBPT
合成
镉离子
显色反应
1-(2-benzothiazole)-3-(4- bromobenzene) tri- azene
spectrophotometry cadmium
