An innovative autonomous robotic system for on-site detection of heavy metal pollution plumes in surface water
De Vito-Francesco, Elisabetta (University of Natural Resources and Life Sciences Vienna. Department of Water, Atmosphere, and Environment)
Farinelli, Alessandro (University of Verona. Department of Computer Science)
Yang, Qiuyue (Universitat Autònoma de Barcelona. Departament de Química)
Nagar, Bhawna (Institut Català de Nanociència i Nanotecnologia)
Álvarez Diduk, Ruslan (Institut Català de Nanociència i Nanotecnologia)
Merkoçi, Arben (Institut Català de Nanociència i Nanotecnologia)
Knutz, Thorsten (Go Systemelektronik GmbH)
Haider, Alexander (Go Systemelektronik GmbH)
Stach, Wolfgang (University of Natural Resources and Life Sciences Vienna. Department of Water, Atmosphere, and Environment)
Ziegenbalg, Falko (University of Natural Resources and Life Sciences Vienna. Department of Water, Atmosphere, and Environment)
Allabashi, Roza (University of Natural Resources and Life Sciences Vienna. Department of Water, Atmosphere, and Environment)

Data:	2022
Resum:	Smart monitoring has been studied and developed in recent years to create faster, cheaper, and more user-friendly on-site methods. The present study describes an innovative technology for investigative monitoring of heavy metal pollution (Cu and Pb) in surface water. It is composed of an autonomous surface vehicle capable of semiautonomous driving and equipped with a microfluidic device for detection of heavy metals. Detection is based on the method of square wave anodic stripping voltammetry using carbon-based screen-printed electrodes (SPEs). The focus of this work was to validate the ability of the integrated system to perform on-site detection of heavy metal pollution plumes in river catchments. This scenario was simulated in laboratory experiments. The main performance characteristics of the system, which was evaluated based on ISO 15839 were measurement bias (Pb 75%, Cu 65%), reproducibility (in terms of relative standard deviation: Pb 11-18%, Cu 6-10%) and the limit of detection (4 µg/L for Pb and 7 µg/L for Cu). The lowest detectable change (LDC), which is an important performance characteristic for this application, was estimated to be 4-5 µg/L for Pb and 6-7 µg/L for Cu. The life span of an SPE averaged 39 measurements per day, which is considered sufficient for intended monitoring campaigns. This work demonstrated the suitability of the integrated system for on-site detection of Pb and Cu emissions from large and medium urban areas discharging into small water bodies.
Ajuts:	European Commission 689341 Ministerio de Ciencia e Innovación SEV-2017-0706
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Heavy metal pollution ; Surface water monitoring ; Square wave anodic stripping voltammetry ; Screen-printed electrode ; Autonomous surface vehicle
Publicat a:	Environmental Monitoring and Assessment, Vol. 194 (January 2022) , art. 122, ISSN 1573-2959

DOI: 10.1007/s10661-021-09738-z
PMID: 35075508

19 p, 3.3 MB

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