Cátedra UNESCO/UNITWIN WiCop. Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz , Polígono Río San Pedro s/n, Puerto Real, Cádiz 11510, Spain.
Environ Sci Technol. 2014;48(15):8864-72. doi: 10.1021/es5015373. Epub 2014 Jul 10.
Carbon capture and storage is increasingly being considered one of the most efficient approaches to mitigate the increase of CO2 in the atmosphere associated with anthropogenic emissions. However, the environmental effects of potential CO2 leaks remain largely unknown. The amphipod Ampelisca brevicornis was exposed to environmental sediments collected in different areas of the Gulf of Cádiz and subjected to several pH treatments to study the effects of CO2-induced acidification on sediment toxicity. After 10 days of exposure, the results obtained indicated that high lethal effects were associated with the lowest pH treatments, except for the Ría of Huelva sediment test. The mobility of metals from sediment to the overlying seawater was correlated to a pH decrease. The data obtained revealed that CO2-related acidification would lead to lethal effects on amphipods as well as the mobility of metals, which could increase sediment toxicity.
碳捕集与封存技术越来越被认为是减少人为排放导致大气中二氧化碳增加的最有效方法之一。然而，潜在的 CO2 泄漏对环境的影响在很大程度上还不得而知。端足目桡足类无节幼体（Ampelisca brevicornis）暴露在从加的斯湾不同区域采集的环境沉积物中，并进行了几种 pH 值处理，以研究 CO2 引起的酸化对沉积物毒性的影响。暴露 10 天后，结果表明，高致死效应与最低 pH 值处理有关，但赫雷斯河口的沉积物测试除外。从沉积物向覆盖的海水中迁移的金属的流动性与 pH 值下降有关。获得的数据表明，与 CO2 相关的酸化会导致桡足类动物以及金属的迁移性产生致死效应，从而增加沉积物的毒性。
