Application of copper(II)-based chemicals induces CH 3 Br and CH 3 Cl emissions from soil and seawater.

Autor: Jiao Y; Department of Geography, University of California, Berkeley, CA, 94720, USA. yi.jiao@bio.ku.dk.; Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Universitetsparken 15, Copenhagen Ø, DK-2100, Denmark. yi.jiao@bio.ku.dk., Zhang W; Anhui Province Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei, China., Kim JYR; Department of Geography, University of California, Berkeley, CA, 94720, USA., Deventer MJ; Department of Geography, University of California, Berkeley, CA, 94720, USA.; ANECO Institut für Umweltschutz GmbH & Co., Hamburg, 21079, Germany., Vollering J; Department of Geography, University of California, Berkeley, CA, 94720, USA.; Department of Environmental Sciences, Western Norway University of Applied Sciences, 5020, Bergen, Norway., Rhew RC; Department of Geography, University of California, Berkeley, CA, 94720, USA. rrhew@berkeley.edu.; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, 94720, USA. rrhew@berkeley.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Jan 10; Vol. 13 (1), pp. 47. Date of Electronic Publication: 2022 Jan 10.
DOI: 10.1038/s41467-021-27779-3
Abstrakt: Methyl bromide (CH 3 Br) and methyl chloride (CH 3 Cl) are major carriers of atmospheric bromine and chlorine, respectively, which can catalyze stratospheric ozone depletion. However, in our current understanding, there are missing sources associated with these two species. Here we investigate the effect of copper(II) on CH 3 Br and CH 3 Cl production from soil, seawater and model organic compounds: catechol (benzene-1,2-diol) and guaiacol (2-methoxyphenol). We show that copper sulfate (CuSO 4 ) enhances CH 3 Br and CH 3 Cl production from soil and seawater, and it may be further amplified in conjunction with hydrogen peroxide (H 2 O 2 ) or solar radiation. This represents an abiotic production pathway of CH 3 Br and CH 3 Cl perturbed by anthropogenic application of copper(II)-based chemicals. Hence, we suggest that the widespread application of copper(II) pesticides in agriculture and the discharge of anthropogenic copper(II) to the oceans may account for part of the missing sources of CH 3 Br and CH 3 Cl, and thereby contribute to stratospheric halogen load.
(© 2022. The Author(s).)
Databáze: MEDLINE
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