RT Journal Article
T1 Single and simultaneous adsorption of three sulfonamides in agricultural soils: Effects of pH and organic matter content
A1 Conde Cid, Manuel
A1 Ferreira-Coelho, Gustavo
A1 Fernández Calviño, David
A1 Núñez Delgado, Avelino
A1 Fernández Sanjurjo, María J.
A1 Arias Estévez, Manuel
A1 Álvarez Rodríguez, Esperanza
K1 Antibiotics
K1 Competitive adsorption/desorption
K1 Soil pollution
K1 Sulfonamides
K1 Water pollution
AB Veterinary antibiotics reaching the environment have become a matter of global concern, since they can causeserious negative impacts on human and ecological health. Therefore, a deep understanding of their behaviorand fate once they reach the soil environment is of utmost importance to design and implement appropriatemeasures that could reduce their potential risks. With this aim, batch-type experiments were carried out tostudy competitive adsorption and desorption for three sulfonamide antibiotics (sulfadiazine –SDZ-, sulfamethazine–SMT-, and sulfachloropyridazine –SCP-) in six crop soils presenting different characteristics. The results obtainedshowed that sulfonamides have a low retention in soils, with average adsorption percentages of 40% forSDZ, 44% for SMT and 54% for SCP, and with desorption percentages up to 36% for SDZ and SCP and up to 29%for SMT. The retention of sulfonamides was strongly influenced by the soil organic carbon content (SOC), withhigher adsorption and less desorption associated to higher SOC contents. In addition, the hydrophobicity of sulfonamidesalso had an influence, as higher hydrophobicity resulted in higher affinity for soils, showing the affinitysequences: SDZ ~ SMT bSCP in acid soils, and SDZ ~ SCP bSMT in neutral soils. The results obtained in theternary systems were very similar to those found in simple systems, indicating the absence of substantial competitionfor adsorption sites among the three sulfonamides. Despite the low competition among them, these antibioticshave high mobility in soils and, therefore, they imply a significant risk of contamination ofwater bodies,as well as of entering the food chain, generating serious hazards for human and environmental health. Therefore,fertilization of soilswith sulfonamide polluted manures should be controlled, implementing newmeasurementsfor the pretreatment of manures before their application, thus contributing to a reduction of potential risks.
PB Elsevier
YR 2020
FD 2020-07-15
LK http://hdl.handle.net/10347/32362
UL http://hdl.handle.net/10347/32362
LA eng
NO Conde-Cid, M., Ferreira-Coelho, G., Fernández-Calviño, D., Núñez-Delgado, A., Fernández-Sanjurjo, M. J., Arias-Estévez, M., & Álvarez-Rodríguez, E. (2020). Single and simultaneous adsorption of three sulfonamides in agricultural soils: Effects of pH and organic matter content. Science of the Total Environment, 744, 140872.
NO Ministerio de Economía y CompetitividadFondos FEDER
DS Minerva
RD 23 abr 2026