Research Center for Inland Seas, Kobe University, Fukaeminami 5-1-1 Higashinada, Kobe, 658-0022, Japan.
Graduate School of Maritime Sciences, Kobe University, Fukaeminami 5-1-1 Higashinada, Kobe, 658-0022, Japan.
Environ Sci Pollut Res Int. 2022 Apr;29(20):29535-29542. doi: 10.1007/s11356-021-14187-9. Epub 2021 May 4.
This study sought to clarify whether suspended particles containing high Cu concentrations are present in the sea-surface microlayer (S-SML). For this reason, suspended particles (10-2000 μm) in the S-SML were collected periodically from a ship mooring pond during 2018-2020, and the acid-soluble Cu concentration in the suspended particles was measured as particulate Cu (P-Cu). The highest concentration of P-Cu in the S-SML of the pond was 75 μg L with a 90th percentile value of 2.5 μg L. This is below P-Cu values reported for the S-SML in North American ports, but 140 times higher than this found in bulk seawater in the Atlantic Ocean. The highest P-Cu concentration in the S-SML of non-organism (abiotic) origin was 17 μg L, and the abiotic P-Cu to P-Cu ratio varied from 0.2 to 100%, likely depending on the quality and quantity of biogenic material in the S-SML samples. It is assumed that the S-SML particles examined here contain high Cu concentrations originating from ship antifouling paints.
本研究旨在阐明海表微层（S-SML）中是否存在高铜浓度的悬浮颗粒。为此，本研究于 2018 年至 2020 年期间，定期从停泊在船坞中的船只上采集 S-SML 中的悬浮颗粒（10-2000 μm），并测量悬浮颗粒中的酸可溶铜浓度作为颗粒态铜（P-Cu）。池塘 S-SML 中 P-Cu 的最高浓度为 75 μg/L，第 90 个百分位值为 2.5 μg/L。这低于北美的港口 S-SML 中报告的 P-Cu 值，但比大西洋中 bulk seawater 中的 P-Cu 值高 140 倍。非生物（无生命）起源的 S-SML 中 P-Cu 的最高浓度为 17 μg/L，无生命 P-Cu 与 P-Cu 的比值在 0.2 到 100%之间变化，可能取决于 S-SML 样品中生物物质的质量和数量。据推测，此处研究的 S-SML 颗粒中含有源自船舶防污漆的高浓度铜。
