Abstract：
:Photodegradation studies of the organophosphorous insecticide methidathion in thin layers of wet soil samples have been carried out under solar irradiation. Soil samples consisted of an agricultural soil added with two amendments: a municipal biosolid and the cationic surfactant TDTMA (tetradecyl trimethyl ammonium bromide). Dark controls of the different soil treatments were also considered. Soil and biosolid samples were previously autoclaved to eliminate biotic degradation. In this study we investigated the role of these amendments in methidathion photodegradation which is a rapid (<7 days) and indirect process. Although scarce differences were found between non-amended and amended samples, methidathion from soil exposed under sunlight is degraded more quickly than in dark conditions. Photodegradation products (methidathion oxon GS 13007 and GS 12956) were not detected.
journal_name
Chemospherejournal_title
Chemosphereauthors
Sánchez L,Romero E,Peña Adoi
10.1016/j.chemosphere.2004.09.108subject
Has Abstractpub_date
2005-05-01 00:00:00pages
969-76issue
7eissn
0045-6535issn
1879-1298pii
S0045-6535(04)01096-3journal_volume
59pub_type
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