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

IF 5.3 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Marine pollution bulletin Pub Date : 2025-02-01 DOI:10.1016/j.marpolbul.2024.117423

Seokyoon Jang , Mansik Choi , Youn-Joong Jeong , Dongjin Joe , Dasom Yang , Minjae Lee , Jinwoo Kim

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Abstract

The elemental and isotopic (δ⁶⁵Cu and δ⁶⁶Zn) 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 δ⁶⁵Cu and δ⁶⁶Zn 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 δ⁶⁵Cu and δ⁶⁶Zn approached the bulk AFP values when the leached fraction increased. The adsorption of metals onto marine sediments resulted in substantial fractionation (Δ⁶⁵Cu_soln-solid = 0.91 ± 0.30 ‰ and Δ⁶⁶Zn = −0.14 ± 0.07 ‰), but the δ⁶⁵Cu values in sediments were similar to those in bulk AFP because almost all of the Cu adsorbed to marine sediments within 12 h.

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防污涂料的同位素特征、海水溶解过程中Cu和Zn同位素的分馏及其对海洋沉积物的吸附。

研究了来自5家涂料生产企业的34份AFP样品的元素和同位素（δ65Cu和δ66Zn）特征，以及AFP在海水溶解过程中的同位素分异，以及同位素随后在沿海细粒沉积物上的吸附，以确定其潜在的指示指标（金属比例和同位素）。34种AFPs的δ65Cu和δ66Zn值与涂料类型和生产厂家无关，可分为2组。随着浸出分数的增加，δ65Cu和δ66Zn逐渐接近体AFP值。金属在海洋沉积物上的吸附导致了大量的分选（Δ65Cusoln-solid = 0.91±0.30‰和Δ66Zn = -0.14±0.07‰），但沉积物中的δ65Cu值与大块AFP中的δ65Cu值相似，因为几乎所有的Cu在12 h内被海洋沉积物吸附。

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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.