1-(4-硝基苯基)-3-(6-甲基-2-苯并噻唑)三氮烯的合成及其与镉(Ⅱ)的显色反应  

Study on the colour reaction of a new reagent 1-(4-nitrophenyl)-3-(6-methbenz-thiazol)-thiazene with cadmium(Ⅱ)

作　　者：陈才元[1] 朱端杰[1] 邹欣平[1] 龚楚儒[1] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435002

出　　处：《化学试剂》2005年第10期603-604,632,共3页Chemical Reagents

摘　　要：报道了标题化合物(NPMBTT)的合成及其与镉(Ⅱ)的显色反应.在Triton X-100存在下,pH 10.9的Na2B4O7-NaOH缓冲介质中,NPMBTT与镉(Ⅱ)在波长535nm处发生退色反应,在波长450nm处发生生色反应,建立以535nm为参比波长,450nm为测量波长的双峰双波长测定法,其表观摩尔吸光系数为2.47×105L·mol-1·cm-1.镉(Ⅱ)浓度在0～12μg/25mL范围内遵守比尔定律.The colour reaction of 1-（4-nitrophenyl）-3-（6-meth- benzhiazol）-thiazene （ NPMBTT ） with Cd （ Ⅱ ） was studied. NPMBTT formed an orange-yellow complex with Cd （ Ⅱ ）in the molar ratio of 1 ： 3. The molar absorptivity was 2.47 × 10^5L· mol^-1·cm^-1 by dual-wavelength spectrophotometry with reference wavelength of 535nm and determination wavelength of 450nm. Beer＇s law was obeyed in the range of 0 ～ 15μg/25mL. This method has been used for the determination of cadmium （ Ⅱ ）in human hair with satisfactory results.

关 键 词：1-(4-硝基苯基)-3-(6-甲基-2-苯并噻唑)三氮烯 镉 显色反应 

分 类 号：O657.32[理学—分析化学]