Colorimetric detection of mercury based on a strip sensor
Colorimetric detection of mercury based on a strip sensor
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DOI：
10.1039/c3ay42002g
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发表时间：
2014-07
影响因子：
3.1
通讯作者：
C. Xing;Liqiang Liu;Xun Zhang;Hua Kuang;Chuanlai Xu
中科院分区：
文献类型：
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作者：
C. Xing;Liqiang Liu;Xun Zhang;Hua Kuang;Chuanlai Xu
汞污染是一个全球性的问题。仪器检测成本高，迫切需要一种快速、准确的检测方法来替代仪器检测。在这里，我们提出了一种传感器汞（Hg（II））检测，具有很好的分析应用。样品处理过程与抗体-抗原反应过程相结合。在测试前充分的预处理时间导致高灵敏度。试纸条结果显示，Hg（II）浓度在1 - 10 ng mL−1之间具有良好的线性关系，检测限为0.23 ng mL−1。其他金属对Hg（II）的检测影响可忽略不计。通过在自来水样品中加入不同浓度的Hg（II），对该方法的准确性进行了评价。样品回收率为103.2%~ 108.7%。该方法简便、便携，可用于现场Hg（II）污染的快速监测。
Environmental pollution with mercury is a global problem. A fast and accurate detection method is urgently required as an alternative to instrument detection, whose cost is very high. Here we present a sensor for mercury (Hg(II)) detection which has promising analytical applications. The sample treatment process was integrated with the antibody–antigen reaction process. Adequate pre-treatment time before the test resulted in high sensitivity. The strip results showed an excellent linear relationship with the concentration of Hg(II) between 1 and 10 ng mL−1, and the detection limit was 0.23 ng mL−1. Other metals had a negligible effect on the detection of Hg(II). The accuracy of the method was evaluated by adding different concentrations of Hg(II) to tap water samples. The sample recoveries ranged from 103.2% to 108.7%. This immunoassay is simple and portable, which makes it very useful for rapid monitoring of Hg(II) contamination in field analysis.