Isotopic characteristics of antifouling paints and fractionation of Cu and Zn isotopes during dissolution by seawater and their adsorption to marine sediments.

Autor: Jang S; Institute of Coastal Management and Technology, Jeonnam 58552, Republic of Korea., Choi M; Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea; Department of Earth, Environmental & Space Sciences, Chungnam National University, Daejeon 34134, Republic of Korea. Electronic address: mschoi@cnu.ac.kr., Jeong YJ; Research Center for Geochronology & Isotope Analysis, Korea Basic Science Institute, Chungbuk 28119, Republic of Korea., Joe D; Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea., Yang D; Department of Earth, Environmental & Space Sciences, Chungnam National University, Daejeon 34134, Republic of Korea., Lee M; Department of Earth, Environmental & Space Sciences, Chungnam National University, Daejeon 34134, Republic of Korea., Kim J; Marine Research Institute, Chungnam National University, Daejeon 34134, Republic of Korea.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Dec 18; Vol. 211, pp. 117423. Date of Electronic Publication: 2024 Dec 18.
DOI: 10.1016/j.marpolbul.2024.117423
Abstrakt: The elemental and isotopic (δ 65 Cu and δ 66 Zn) characteristics of 34 AFP samples from 5 paint manufacturers, the isotopic fractionation during the dissolution of AFPs by seawater, and the subsequent adsorption of isotopes onto coastal fine-grained sediments were investigated to identify potential indicators (metal ratios and isotopes). The δ 65 Cu and δ 66 Zn values for 34 AFPs could be divided into 2 groups regardless of the type of paint or manufacturer. Dissolution by seawater induced substantial fractionation but δ 65 Cu and δ 66 Zn approached the bulk AFP values when the leached fraction increased. The adsorption of metals onto marine sediments resulted in substantial fractionation (Δ 65 Cu soln-solid  = 0.91 ± 0.30 ‰ and Δ 66 Zn = -0.14 ± 0.07 ‰), but the δ 65 Cu values in sediments were similar to those in bulk AFP because almost all of the Cu adsorbed to marine sediments within 12 h.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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