title: The adsorption and degradation of chlorpyriphos-methyl, pendimethalin and metalaxyl in solid urban waste compost.
abstract: To evaluate the feasibility of using compost to prepare substrates for the disposal of pesticide residues, adsorption and degradation studies were carried out on three widely used agricultural pesticides: chlorpyriphos-methyl, pendimethalin and metalaxyl. Obtained from solid urban waste, this compost has been shown to be able to adsorb high levels of chlorpyriphos-methyl and pendimethalin (85%, 100%) whereas metalaxyl was only adsorbed at a level of 37%. However, adding smectite to the compost increased the adsorption of metalaxyl by 117%. Chlorpyriphos-methyl and pendimethalin degraded quickly with half-lives of 1.7 and 14.5 days, respectively, whereas metalaxyl proved more persistent (a half-life of 84 days). Adding ammonium nitrate to the compost accelerated metalaxyl degradation to a half-life of 15 days.
authors: Dipartimento di Scienze delle Produzioni Agrarie e Alimentari Università di Catania, Catania, Italy.
authors: Andrea
authors: A
authors: Baglieri
authors: Mara
authors: M
authors: Gennari
authors: Maria
authors: M
authors: Arena
authors: Cristina
authors: C
authors: Abbate
mesh_terms: D000327:Adsorption; D000409:Alanine / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D000814:Aniline Compounds / Q000493:pharmacokinetics*; D001673:Biodegradation, Environmental; D002947:Cities; D005240:Feasibility Studies; D005659:Fungicides, Industrial / Q000493:pharmacokinetics*; D006207:Half-Life; D006540:Herbicides / Q000493:pharmacokinetics*; D016014:Linear Models; D010573:Pesticide Residues / Q000493:pharmacokinetics*; D012037:Refuse Disposal; D012987:Soil; D012988:Soil Microbiology
chemical_list: D000814:Aniline Compounds; D005659:Fungicides, Industrial; D006540:Herbicides; D010573:Pesticide Residues; D012987:Soil; C028175:metalaxyl; D000409:Alanine; C030856:pendimethalin