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Biogeochemical cycle and isotope fractionation of copper in plant-soil systems: a review
China Univ Geosci Beijing, China.
China Univ Geosci Beijing, China.
Tianjin Univ, China.
China Univ Geosci Beijing, China.
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2024 (English)In: Reviews in Environmental Science and Biotechnology, ISSN 1569-1705, E-ISSN 1572-9826, Vol. 23, p. 21-41Article in journal (Refereed) Published
Abstract [en]

Copper (Cu) is a bio-essential element and a potentially toxic pollutant in the plant-soil systems. Analysis of stable Cu isotopes can be a powerful tool for tracing the biogeochemical cycling of Cu in plant-soil systems. In this review, we examined the analysis method of stable Cu isotope ratios in plants and soils, and discussed the biogeochemical processes, including redox reactions, mineral dissolution, abiotic and biotic sorption, which fractionate Cu isotopes in plant-soil systems. We also reviewed the variability of the isotopic signature in different plants and plant tissues, as well as different soil types and profiles to discuss the relationship between the biogeochemical transformation of Cu and its isotope fractionation in plant-soil systems. The collected data show that delta 65Cu values range from - 2.59 to + 1.73 parts per thousand in plant-soil systems, and increment 65Cu values range from - 1.00 to - 0.11 parts per thousand between the plant and soil. The variation in the increment 65Cu value between the plant and soil is mainly in response to the different uptake strategies during the acquisition of Cu from soils. Cu isotope analyses are proved to be a suitable technique during the biogeochemical transformation of Cu in plant-soil systems, especially during redox reactions. Ultimately, research challenges and future directions for Cu isotope techniques as a proxy for Cu biogeochemical cycles are also proposed. This review is beneficial for soil safety, food safety, and the sustainable development of agriculture and human health.

Place, publisher, year, edition, pages
Springer, 2024. Vol. 23, p. 21-41
Keywords [en]
Copper, Isotope analysis, Biogeochemical cycling, Plant-soil systems
National Category
Soil Science
Research subject
Environmental Science, Environmental Chemistry
Identifiers
URN: urn:nbn:se:lnu:diva-127897DOI: 10.1007/s11157-024-09681-8ISI: 001160207200002Scopus ID: 2-s2.0-85184502312OAI: oai:DiVA.org:lnu-127897DiVA, id: diva2:1839376
Available from: 2024-02-20 Created: 2024-02-20 Last updated: 2024-03-13Bibliographically approved

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Yu, Changxun

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