Investigation of Functionalized Au Nanoparticles for Copper Ions
功能化纳米金检测铜金属离子
作者: 黄嘉婕戴正宇刘聿严瑾苏润周亚红
作者单位: 1江苏警官学院刑事科学技术系,江苏 南京
刊名: Advances in Analytical Chemistry, 2018, Vol.08 (02), pp.58-64
中文刊名: 分析化学进展, 2018, Vol.08 (02), pp.58-64
来源数据库: Hans Pubs Journal
DOI: 10.12677/AAC.2018.82008
英文摘要: Sodium citrate reduction method was used to prepare nano gold particles (AuNPs) as a colorimetric solution. Papain was modified on the surface of AuNPs to form a stable papain AuNPs water soluble complex. According to the specific binding between papain and Cu2+, papain-AuNPs aggregation was induced, and the color of the solution changed from red to blue violet. The colorimetric detection of Cu2+ in water is realized. The experimental results show that the detection range of the method is 0.5~25 μg∙mL−1, the detection limit is 0.3 μg∙mL−1, and other heavy metal ions have little interference. The method is simple and easy to prepare. It can be used for rapid detection of Cu2+ in water.
中文摘要: 采用柠檬酸钠还原法制备纳米金颗粒(AuNPs)作为比色溶液,将木瓜蛋白酶修饰于AuNPs 表面,形成稳定的木瓜蛋白酶- AuNPs水溶复合物,根据木瓜蛋白酶和Cu2+之间的特异性结合引起木瓜蛋白酶- AuNPs聚集,使溶液颜色由红色变为蓝紫色,实现了水中Cu2+的比色检测。实验结果显示该方法的检测范围为0.5~25 μg∙mL−1,检出限为0.3 μg∙mL−1,其他重金属离子干扰较小。该方法具有制备和操作简单等优点,可望用于水体中Cu2+的现场快速检测。
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