A colorimetric sensor array based on sulfuric acid assisted KMnO4 fading for the detection and identification of pesticides
A colorimetric sensor array based on sulfuric acid assisted KMnO4 fading for the detection and identification of pesticides
复制标题
基于硫酸辅助KMnO4褪色的比色传感器阵列用于农药检测和识别
DOI：
10.1016/j.talanta.2018.01.029
复制
发表时间：
2018-05-01
期刊：
影响因子：
6.1
通讯作者：
Lin, Hengwei
中科院分区：
文献类型：
--
作者：
Qiao, Li'na;Qian, Sihua;Lin, Hengwei
农药在现代农业中对提高农作物产量起着至关重要的作用，但其残留对环境和人类健康造成严重危害。在此，一种新的和简单的比色传感器阵列建立在硫酸辅助KMnO 4褪色策略已被开发用于农药检测和识别。该传感器阵列由KMnO4和硫酸通过简单地调节它们的浓度和比例而容易地制成。层次聚类分析（HCA）表明，所制造的比色传感器阵列具有较高的维数，并显示出良好的能力，以识别常见种类的农药从潜在的干扰物。将HCA与相应的拟合曲线相结合，实现半定量检测。该传感器阵列已成功应用于真实的样品中西维因等农药残留的检测。本文所述的策略不仅将“最大限度地”简化设计和制造方法，而且将比色传感器阵列方法的应用领域扩展到弱反应性分析物。
Pesticides play a critical role in improving crop yield in modern agriculture, but their residues significantly harm the environment and human health. Herein, a novel and simple colorimetric sensor array built on sulfuric acid assisted KMnO4 fading strategy has been developed for pesticides detection and discrimination. This sensor array is facilely fabricated by KMnO4 and sulfuric acid through simply adjusting their concentrations and ratios. Hierarchical clustering analysis (HCA) demonstrates that the as-fabricated colorimetric sensor array has a high dimensionality, and shows excellent capability to recognize common kinds of pesticides from potential interferants. Semi-quantitative detection was achieved through combining HCA and corresponding fitting curves. Moreover, the proposed sensor array was successfully applied to detect pesticide residues (e.g. carbaryl) in real samples. The strategy described herein will not only "maximally" simplify the design and fabrication approach, but expand the application fields of colorimetric sensor array methodology towards weak-reactive analytes.