Geosmin (GSM) and 2‐Methylisoborneol (MIB) are substances commonly found in river water and arise due to eutrophication process. Such contaminants affect the organoleptic properties of water, hampering its consumption, and use in beverage industries. As the human perception threshold for these compounds is low, the devices aimed at their detection must be sensitive enough to detect concentrations as low as a few nanogram per liter in order to guarantee the water quality parameters. Due to the experimental simplicity, fast analysis, portability, and capability for on‐site analysis, the use of electronic tongues and electronic noses employing hybrid and composite materials are potential for GSM and MIB determination. In this work, two distinct electronic tongues were applied in the electrical determination of GSM and MIB in pure and river water. The difference between them consisted in the type of polymer processing used in the fabrication of sensing units. The thin films deposited onto gold IDEs were based on polyamide 6, polypirrole, and polyaniline, but fabricated by drop‐casting and electrospinning. The differences in the electronic tongue performances were correlated to the distinct morphologies of the sensitive layers. Both devices were able to discriminate pure water from solutions tainted with GSM and MIB in concentration as low as 25 ng L⁻¹, with high data correlation and a good reproducibility.

中文翻译：

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电纺纳米纤维与滴铸膜设计电子舌的比较：监测水样中土臭素和2-甲基异冰片的性能比较

土臭素（GSM）和2-甲基异冰片醇（MIB）是河水中常见的物质，是由于富营养化过程而产生的。此类污染物会影响水的感官特性，阻碍其消耗，并在饮料行业中使用。由于人类对这些化合物的感知阈值较低，因此旨在检测其的设备必须足够灵敏，以检测至每升几纳克的低浓度，以保证水质参数。由于实验的简单性，快速的分析，便携性和现场分析能力，采用混合和复合材料的电子舌和电子鼻在确定GSM和MIB方面具有潜力。在这项工作中，两种不同的电子舌被用于纯净水和河水中的GSM和MIB的电测定。它们之间的区别在于传感单元制造中使用的聚合物处理类型。沉积在金IDE上的薄膜基于聚酰胺6，聚吡咯和聚苯胺，但通过滴铸和静电纺丝制成。电子舌舌性能的差异与敏感层的不同形态有关。两种设备都能够从浓度低至25 ng L的GSM和MIB污染溶液中区分纯净水 电子舌舌性能的差异与敏感层的不同形态有关。两种设备都能够从浓度低至25 ng L的GSM和MIB溶液中区分纯净水 电子舌舌性能的差异与敏感层的不同形态有关。两种设备都能够从浓度低至25 ng L的GSM和MIB污染溶液中区分纯净水^-1，具有较高的数据相关性和良好的可重复性。