¿Qué pasa con los contaminantes emergentes que llegan al suelo cuando se riega con aguas regeneradas?: Metodología multi-residuo y efectos de la esterilización de las muestras del suelo

• Juan Ramón Fernández-Vera ^[2] ; Vanessa Mendoza-Grimón ^[1] ; Esmeralda Estévez ^[1] ; Rayco Guedes-Alonso ^[1] ; Sarah Montesdeoca-Esponda ^[1] ; Javier Pacheco-Juarez ^[1] ; Zoraida Sosa-Ferrera ^[1] ; Mª del Pino Palacios-Díaz ^[1]
  1. [1] Universidad de Las Palmas de Gran Canaria

     Universidad de Las Palmas de Gran Canaria

     Gran Canaria, España

     
  2. [2] Laboratorio Agroalimentario y Fitopatológico del Cabildo de Gran Canaria
• Localización: 1st Congress Bridge to Africa: Las Palmas de Gran Canaria, 20-25.02.2024, 2024, ISBN 9788490425275, págs. 46-50
• Idioma: español
• Enlaces
  • Texto Completo Libro
• Resumen

  • A multi-residue methodology was established to understand what happens to emerging compounds (EC) in irrigated soils reusing re- generated water. To improve the knowledge of the bioavailability of EC to be absorbed by plant roots, a water:methanol extractant was used after enriching different soil samples with a mixture of 23 EC. To discriminate biodegradation from adsorption, tyndaliza- tion-sterilized and nontindalization-sterilized soil samples were fortified with 2.5; 5; 10 and 50 μg/L and 10 and 50, respectively, (equivalent to 17.5 and 350 μg/kg of soil). A multi-residue method capable of determining emerging contaminants that may occur in soil has been validated. Following EC present significant differ- ences due to tyndalization: Ac, At, Cb, Cy, Kt, Sl, Tr and Vl, their effect not being significant for the rest of EC. The low recoveries have demonstrated the difficulty of extracting compounds from the soil, which explains the low absorptions presented by crops irrigated with regenerated water. Thus, the barrier represented by the soil and the rhizosphere seems to guarantee the safety of re- use, so it is necessary to delve into these studies