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5. 新显色剂4-(4-甲基-2-硝基苯重氮基)氨基-4′-氯偶氮苯的合成及其与汞(Ⅱ)的显色反应

新显色剂4-(4-甲基-2-硝基苯重氮基)氨基-4′-氯偶氮苯的合成及其与汞(Ⅱ)的显色反应

来源 :河南省化学会2018年学术年会 | 被引量 : 0次 | 上传用户：swl3322

【摘 要】

：

合成了一种新显色剂 4-(4-甲基-2-硝基苯重氮基)氨基-4′-氯偶氮苯(简称MNDACB),并研究了其在Triton X-100 存在下与Hg(Ⅱ的)显色反应.结果表明,在pH11.0 的Na2B4O7-NaOH 缓冲介质中,试剂与Hg(Ⅱ形)成稳定的红色配合物,最大吸收波长位于491 nm,表观摩尔吸光系数为1.45×105 L·mol-1·cm-1,Hg(Ⅱ的)质量浓度在0～0.8 μg/

【作 者】

：

王贵芳 杨凤云 

【机 构】

：

安阳师范学院化学化工学院,河南安阳455000

【出 处】

：

河南省化学会2018年学术年会

【发表日期】

：

2018年10期

【关键词】

：

4-(4-甲基-2-硝基苯重氮基)氨基-4′-氯偶氮苯 合成 汞(Ⅱ )分光光度法 

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　　合成了一种新显色剂 4-(4-甲基-2-硝基苯重氮基)氨基-4′-氯偶氮苯(简称MNDACB),并研究了其在Triton X-100 存在下与Hg(Ⅱ的)显色反应.结果表明,在pH11.0 的Na2B4O7-NaOH 缓冲介质中,试剂与Hg(Ⅱ形)成稳定的红色配合物,最大吸收波长位于491 nm,表观摩尔吸光系数为1.45×105 L·mol-1·cm-1,Hg(Ⅱ的)质量浓度在0～0.8 μg/mL范围内服从比耳定律.

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