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<p>Offshore wind turbine foundation piles commonly use anti-corrosion methods that result in trace amounts of aluminum (Al) ions dissolving into seawater. Therefore, this study aimed to evaluate the impact of seawater Al ions on marine organisms. First, acute toxicity tests were conducted on four types of Al compounds using pacific whiteleg shrimp (<i>Litopenaeus vannamei</i>) post-larvae in seawater at designed concentrations. Additionally, seawater samples were collected from offshore wind farm (OWF) areas from Miaoli, Changhua, and Yunlin to determine Al concentrations and assess acute toxicity on whiteleg shrimp. Our results showed that the average Al concentrations in the water samples of Miaoli, Changhua and Yunlin wind farms were 0.0041 ± 0.0022, 0.0036 ± 0.0018, and 0.0031 ± 0.0016&#xa0;mg/L, respectively. The 48-hours LC<sub>50</sub> range of Al ions for seawater shrimp post-larvae was 27.9 to 43.2&#xa0;mg/L. Furthermore, no mortalities were observed in any of the OWF seawater sample groups. These easy to use platforms indicated that the LC<sub>50</sub> tolerance concentration (15.8&#xa0;mg/L) of the Al compounds for shrimp post-larvae was significantly higher than the Al concentration in OWF seawater. Therefore, the Al released from anti-corrosion methods would pose a low acute risk to marine organisms in Taiwan OWFs.</p>

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Biological safety assessment of dissolved aluminum ions in coastal seawater: acute toxicity effects on Pacific whiteleg shrimp (Litopenaeus vannamei) Post-larvae

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • Pei-Hsuan Wu,
  • Yen-Kung Hsieh,
  • Tsang-Hsieh Hung,
  • Wei-Shan Chou,
  • Ya-Rung Wu,
  • Ping Chen,
  • Jin-Li Yu,
  • Chao-Kai Kang

摘要

Offshore wind turbine foundation piles commonly use anti-corrosion methods that result in trace amounts of aluminum (Al) ions dissolving into seawater. Therefore, this study aimed to evaluate the impact of seawater Al ions on marine organisms. First, acute toxicity tests were conducted on four types of Al compounds using pacific whiteleg shrimp (Litopenaeus vannamei) post-larvae in seawater at designed concentrations. Additionally, seawater samples were collected from offshore wind farm (OWF) areas from Miaoli, Changhua, and Yunlin to determine Al concentrations and assess acute toxicity on whiteleg shrimp. Our results showed that the average Al concentrations in the water samples of Miaoli, Changhua and Yunlin wind farms were 0.0041 ± 0.0022, 0.0036 ± 0.0018, and 0.0031 ± 0.0016 mg/L, respectively. The 48-hours LC50 range of Al ions for seawater shrimp post-larvae was 27.9 to 43.2 mg/L. Furthermore, no mortalities were observed in any of the OWF seawater sample groups. These easy to use platforms indicated that the LC50 tolerance concentration (15.8 mg/L) of the Al compounds for shrimp post-larvae was significantly higher than the Al concentration in OWF seawater. Therefore, the Al released from anti-corrosion methods would pose a low acute risk to marine organisms in Taiwan OWFs.