title: Studying the effect of CO2-induced acidification on sediment toxicity using acute amphipod toxicity test.
abstract: 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.
authors.affiliation: 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.
authors.forename: M Dolores
authors.initials: MD
authors.lastname: Basallote
authors.forename: Manoela R
authors.initials: MR
authors.lastname: De Orte
authors.forename: T Ángel
authors.initials: TÁ
authors.lastname: DelValls
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Riba
mesh_terms: D033304:Amphipoda / Q000187:drug effects*; D000818:Animals; D002245:Carbon Dioxide / Q000737:chemistry*; D055598:Chemical Phenomena; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000737:chemistry / Q000633:toxicity; D012623:Seawater / Q000737:chemistry; D012995:Solubility; D013030:Spain; D023382:Toxicity Tests, Acute; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide