Fate of sulfamethoxazole in compost, manure and soil amended with previously stored organic wastes

Application of organic wastes as soil fertilizers represents an important route agricultural contamination by antibiotics such sulfamethoxazole (SMX). Soil may be influenced the storage time before spreading. The objective this work was to study fate SMX in two wastes, a co-compost green waste and sewage sludge bovine manure, which were stored between 0 28 days, then incorporated that has never received monitored for days under laboratory conditions. Organic spiked with 14C-labelled at concentrations (4.77 48.03 mg kg−1 dry waste). soil-organic mixtures through distribution radioactivity mineralised, available (2-hydroxypropyl-β-cyclodextrin extracts), extractable (acetonitrile extracts) non-extractable fractions. dissipation although partial, due i) incomplete degradation, led formation metabolites detected high performance liquid chromatography, ii) weak adsorption iii) residues. Such processes varied manure promoting residues, compost leading increase Short does not lead complete elimination; thus, environmental occur after incorporating into soil. After addition soil, residues fraction decreased quickly transferred mostly also depended on prior manure. However independent initial concentration.