A Printed Paper‐Based Anion Sensor Array for Multi‐Analyte Classification : On‐Site Quantification of Glyphosate
A Printed Paper‐Based Anion Sensor Array for Multi‐Analyte Classification : On‐Site Quantification of Glyphosate
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用于多分析物分类的印刷纸基阴离子传感器阵列：草甘膦的现场定量
DOI：
10.1002/cplu.202100041
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发表时间：
2021
期刊：
影响因子：
3.4
通讯作者：
Minami Tsuyoshi
中科院分区：
文献类型：
--
作者：
Zhang Zhoujie;Hamedpour Vahid;Lyu Xiaojun;Sasaki Yui;Minami Tsuyoshi
我们报告了一种纸基化学传感器阵列装置（PCSAD），用于定量检测水介质中的氧阴离子，包括除草剂草甘膦（GlyP）。氧阴离子检测的机制依赖于基于配位结合的传感器阵列。在这项研究中，Zn2+、四种儿茶酚染料和七种含氧阴离子之间的竞争性配位结合引起了明显的颜色变化。使用具有数字图像模式识别功能的内部自动图像处理算法，利用颜色变化进行定性和定量分析。线性辨别分析以 100% 的准确度识别出类似结构的氧阴离子。回归分析可准确定量除草剂产品中的GlyP，检出限为16毫克/升，低于环境保护局（EPA）规定的儿童健康建议值（20毫克/升）。 PCSAD 是一种功能强大的传感器设备，用于现场定量水阴离子以进行环境评估。
We report a paper‐based chemosensor array device (PCSAD) for the quantitative detection of oxyanions including the herbicide glyphosate (GlyP) in aqueous media. The mechanism of the oxyanion detection relies on a coordination‐binding‐based sensor array. In this study, the competitive coordination binding among Zn2+, four catechol dyes, and seven oxyanions caused noticeable colour changes. The colour changes were employed for qualitative and quantitative analyses using an in‐house automated image‐processing algorithm with pattern recognition for digital images. A linear discrimination analysis discerned similarly structured oxyanions with 100 % accuracy. The regression analysis allowed the accurate quantification of GlyP in the herbicide products with a limit of detection of 16 mg/L, which is lower than the health advisory value for children (20 mg/L) stipulated by the environmental protection agency (EPA). PCSAD is a powerful sensor device for the on‐site quantification of aqueous anions for environmental assessment.