RT Journal Article
T1 Adsorption/desorption and transport of sulfadiazine, sulfachloropyridazine, and sulfamethazine, in acid agricultural soils
A1 Conde Cid, Manuel
A1 Fernández Calviño, David
A1 Fernández Sanjurjo, María José
A1 Núñez Delgado, Avelino
A1 Álvarez Rodríguez, Esperanza
A1 Arias Estévez, Manuel
K1 2511 Ciencias del Suelo (Edafología)
K1 2391 Química Ambiental
AB Batch-type experiments were used to study adsorption-desorption of three sulfonamides: sulfadiazine (SDZ) sulfachloropyridazine (SCP), and sulfamethazine (SMT), in five crop soils, whereas laboratory soil column experiments were employed to obtain data on transport processes. Adsorption results were satisfactorily adjusted to Linear and Feundlich equations, with R2 values above 0.95. Adsorption followed the sequence SDZ < SMT < SCP, showing higher values for soils with higher levels of organic carbon (OC) content. Conversely, desorption was higher in soils with less OC, and lower in soils with higher OC contents. The temporal moment analysis method gave values for the transport parameters τ and R which were significantly correlated with soil parameters related to organic matter, specifically OC and N concentrations. The higher retention of the three sulfonamides in soils with high organic matter content is a relevant fact, with value when programming management practices in agricultural soils, and specifically in relation to the spreading of animal manures, slurries, or waste containing these emerging pollutants.
PB Chemosphere
SN 00456535
YR 2019
FD 2019-11
LK http://hdl.handle.net/11093/6949
UL http://hdl.handle.net/11093/6949
LA eng
NO Chemosphere, 234, 978-986 (2019)
NO Ministerio de Economía y Competitividad | Ref. CGL2015-67333-C2-1-R
DS Investigo
RD 04-dic-2024