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N-(3-氨基丙基)咪唑功能化纳米金对铀(VI)的可视化比色检测研究

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摘要 本文以N-(3-氨基丙基)咪唑功能化的纳米金粒子(imid-Au NPs)为探针对铀酰离子进行比色检测。imid-Au NPs的咪唑基团可与铀酰根离子形成金属螯合物,诱导imid-Au NPs聚集,致使溶液由酒红色转变为蓝色,该变化可直接通过肉眼识别,从而建立起一种简单快速且适用于现场实时检测UO2+2的可视化比色检测的方法。在最优的p H和显色时间等条件下,其它金属离子(Ni2+、Co2+、Mn2+等11种金属离子)对该比色系统无干扰。当铀酰离子浓度在1.5-13.36μmol/L范围内,该浓度与吸光度比值呈现良好的线性关系(Y=0.1552X+0.4526(R2=0.90)),最低检测限为5.84×10-8mol/L。
作者 杨倩 苏晓龙 崔丹妮 高豹
机构地区 东华理工大学化学生物与材料科学学院
出处 《江西化工》 2015年第2期69-75,共7页 Jiangxi Chemical Industry
关键词 纳米金粒子 铀酰离子 比色检测
分类号 O657.3 [理学—分析化学] X830.2 [环境科学与工程—环境工程]
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参考文献8

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江西化工
2015年 第2期

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