Monitoring the Evolution of Redox Changes in Sediments made Possible by Electrochemical Multilayer Probes

• Autorzy: Popa Radu , Moga Ioana Corina , Nealson Kenneth H. , Cimpoiasu V.M.

Identyfikatory

DOI

10.24425/amm.2022.139699

• Języki publikacji: EN

Abstrakty

EN

Marine sediments with rapid oxic/anoxic transitions are difficult to monitor in real time. Organic overload that may lead to anoxia and buildup of hydrogen sulfide can be caused by a variety of factors such as sewage spills, harbor water stagnation, algal blooms and the vicinity of aquaculture operations. We have tested a novel multiprobe technology (named SPEAR) on marine sediments to evaluate its performance in monitoring sediments and overlaying water. Our results show the ability of the SPEAR probes to distinguish electrochemical changes at 2-3 mm scale and at hourly cycles. SPEAR probes have the ability to identify redox interfaces and redox transition zones in sediments, but do not use micromanipulators (which are cumbersome in field and underwater applications). We propose that the best target habitats for SPEAR-type monitoring are rapidly evolving muddy deposits and sediments near aquaculture operations where pollution with organics stresses the ecosystem.

Słowa kluczowe

EN

sensor; sediments; SPEAR; multielectrode; redox interface

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 3
• Strony: 1037--1041
• Opis fizyczny: Bibliogr. 17 poz., fot., rys.

Twórcy

autor

Popa Radu

• DFR Systems SRL, R&D Department, Bucharest, Romania

• https://orcid.org/0000-0003-0095-3082

autor

Moga Ioana Corina

• DFR Systems SRL, R&D Department, Bucharest, Romania

• https://orcid.org/0000-0003-4633-8480

autor

Nealson Kenneth H.

• University of Southern California, Los Angeles, 90089, USA

• https://orcid.org/0000-0001-5189-3732

autor

Cimpoiasu V.M.

• University of Craiova, Biology and Environmental Engineering Department, Frontier Biology and Astrobiology Research Center, Craiova, 200585, Romania

• https://orcid.org/0000-0002-5643-0013

Bibliografia

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Uwagi

1. This work was supported by a grant of the Romanian Ministry of Education and Research, CCDI- UEFISCDI, project number PN-III-P2-2.1-PTE-2019-0198, within PNCDI III.

2. Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).