Influence of hail suppression systems over silver content in the environment in Aragón (Spain). II: Water, sediments and biota
| Autor: | Iciar Vazquez, J. Causapé, José María Orellana-Macías, Blas L. Valero-Garcés |
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| Přispěvatelé: | European Commission, Ministerio de Ciencia e Innovación (España) |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Wetland 010501 environmental sciences 01 natural sciences Atmosphere chemistry.chemical_compound Environmental Chemistry Waste Management and Disposal Volume concentration 0105 earth and related environmental sciences plant absorption geography geography.geographical_feature_category silver iodide Silver iodide Sediment food and beverages Biota Aragón Pollution Gallocanta Lake lake sediment chemistry Environmental chemistry environmental assessment Soil water Environmental science Groundwater |
| Zdroj: | Zaguán. Repositorio Digital de la Universidad de Zaragoza instname Digital.CSIC. Repositorio Institucional del CSIC |
| Popis: | 6 p. The silver content in soils in the area in the surroundings of the Gallocanta Lake (Aragón, NE Spain) is lower than expected considering the estimated silver emission during the last 50 years by hail suppression systems. To understand the silver accumulation processes, selected water (4 surface, 3 groundwater), biota and sediment (6 surface sediments and 3 cores from Gallocanta and Campillo de Dueñas Lakes and Used Reservoir) samples have been analysed. An essay comparing the growth of wheat in pots with different silver iodide concentrations has been carried out. Finally, silver content in 7 tissues fromtwo sheep that graze in areas bothwith andwithout hail suppression systems during 6–8 years were analysed. Our results show that after 50 years of silver iodide emissions to the atmosphere, silver accumulation in the waters and sediments of the lowlands, including some wetlands of high ecological value, has not been significant. Sediment cores did not show any peaks associated to silver emission. We propose that constant absorption of silver by plants could explain the low concentration in water and sediments. Crops and grass could accumulate the excess silver, as both wheat and sheep are able to absorb significant amounts of silver. These bio - accumulation processes could have helped to avoid a progressive environmental deterioration of the surroundings of the Gallocanta Lake. However, this hypothesis should be corroborated and quantified by further research on the analysis of natural and agricultural areas under the influence of hail suppression systems. Unidad de Zaragoza, Instituto Geológico y Minero de España, España Universidad de Zaragoza, España Instituto Pirenaico de Ecología, España Unidad de Tres Cantos, Instituto Geológico y Minero de España, España |
| Databáze: | OpenAIRE |
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