IPM-Intelligent Pollutant Monitoring ApS, 2690 Karlslunde, Denmark.
Department of Science and Environment, Roskilde University, 4000 Roskilde, Denmark.
Sensors (Basel). 2021 Jan 8;21(2):393. doi: 10.3390/s21020393.
Lindane is documented by the Environmental Protection Agency (EPA) as one of the most toxic registered pesticides. Conventional detection of lindane in the environment requires manual field sampling and complex, time-consuming analytical sample handling relying on skilled labor. In this study, an electrochemical sensing system based on a modified electrode is reported. The system is capable of detecting lindane in aqueous medium in only 20 s. The surface of a conventional carbon electrode is modified with a film of conductive polymer that enables detection of lindane down to 30 nanomolar. The electrode modification procedure is simple and results in a robust sensor that can withstand intensive use. The sensitivity of the sensor is 7.18 µA/µM and the performance was demonstrated in the determination of lindane in spiked ground water. This suggests that the sensor is potentially capable of providing useful readings for decision makers. The rapid and sensitive quantification of lindane in aqueous medium is one step forward to new opportunities for direct, autonomous control of the pesticide level in the environment.
林丹被美国环境保护署（EPA）列为毒性最强的登记在册农药之一。传统的林丹环境检测需要人工现场采样，并依赖熟练劳动力进行复杂且耗时的分析样本处理。在这项研究中，报告了一种基于修饰电极的电化学传感系统。该系统能够在 20 秒内仅在水介质中检测林丹。传统碳电极的表面用导电聚合物薄膜修饰，能够检测低至 30 纳摩尔的林丹。电极修饰过程简单，可得到能承受高强度使用的坚固传感器。传感器的灵敏度为 7.18 µA/µM，并在已被污染地下水的林丹测定中展示了其性能。这表明该传感器有可能为决策者提供有用的读数。林丹在水介质中的快速和灵敏定量是朝着直接、自主控制环境中农药水平的新机会迈出的一步。
