Yang Qiuyue, Nagar Bhawna, Alvarez-Diduk Ruslán, Balsells Marc, Farinelli Alessandro, Bloisi Domenico, Proia Lorenzo, Espinosa Carmen, Ordeix Marc, Knutz Thorsten, De Vito-Francesco Elisabetta, Allabashi Roza, Merkoçi Arben
Nanobioelectronics and Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
Universitat Autònoma de Barcelona, Department of Material Science, Campus de la UAB, Plaça Cívica, Bellaterra, 08193 Barcelona, Spain.
ACS ES T Water. 2021 Dec 10;1(12):2470-2476. doi: 10.1021/acsestwater.1c00192. Epub 2021 Oct 20.
Determination of the levels of heavy metal ions would support assessment of sources and pathways of water pollution. However, traditional spatial assessment by manual sampling and off-site detection in the laboratory is expensive and time-consuming and requires trained personnel. Aiming to fill the gap between on-site automatic approaches and laboratory techniques, we developed an autonomous sensing boat for on-site heavy metal detection using square-wave anodic stripping voltammetry. A fluidic sensing system was developed to integrate into the boat as the critical sensing component and could detect ≤1 μg/L Pb, ≤6 μg/L Cu, and ≤71 μg/L Cd simultaneously in the laboratory. Once its integration was completed, the autonomous sensing boat was tested in the field, demonstrating its ability to distinguish the highest concentration of Pb in an effluent of a galena-enriched mine compared to those at other sites in the stream (Osor Stream, Girona, Spain).
重金属离子水平的测定有助于评估水污染的来源和途径。然而，传统的通过人工采样和实验室异地检测进行空间评估既昂贵又耗时，还需要专业人员。为了填补现场自动检测方法与实验室技术之间的空白，我们开发了一种利用方波阳极溶出伏安法进行现场重金属检测的自主传感船。开发了一种流体传感系统作为关键传感部件集成到船中，该系统在实验室中能够同时检测到≤1μg/L的铅、≤6μg/L的铜和≤71μg/L的镉。自主传感船集成完成后，在实地进行了测试，结果表明，与河流（西班牙赫罗纳省奥索尔河）其他地点相比，它能够区分富含方铅矿的矿井废水中铅的最高浓度。
