4-(2,4-二甲基苯氨基重氮基)-4′-硝基偶氮苯的合成及其与镉(Ⅱ显色)反应的研究

来源 :河南省化学会2018年学术年会 | 被引量 : 0次 | 上传用户:hoticeses
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  合成了一种新显色剂4-(2,4-二甲基苯氨基重氮基)-4′-硝基偶氮苯(简称DMADNA),研究了在非离子表面活性剂Triton X-100 存在下其与Cd(Ⅱ的)显色反应.结果表明,在pH 10.75 的Na2B4O7-NaOH缓冲介质中,试剂与Cd(Ⅱ形)成稳定的蓝紫色配合物,最大吸收波长位于583 nm,表观摩尔吸光系数为1.25×105 L·mol-1·cm-1,镉的质量浓度在0~0.9 μg·mL-1 范围内遵守比耳定律.
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