Biomineralization rates of 14C-labelled organic chemicals in aerobic and anaerobic suspended soil

Patterns of groundwater concentration and fate of lindane in an irrigated semiarid area in Argentina

“…In any case, a revision of the equilibrium partition hypothesis seems per- tinent to the goal of incorporating a treatment of the kinetics of the pesticide in the soil matrix. Reported estimates of lindane soil half-life values vary from 7.42 d [35], 26 to 45 d [36], and 35 to 257 d [9] to 266 d [37] and 569 d [23]. In most cases, the definition of half-lives is related to the first order decay constant k H l ϭ ln(0.5)/k (4) and this is the approach followed in RITZ, PRZM2, and CLFUG.…”

Fate of anilines and related compounds in the environment. A review

“…water, soil and plants), by chemical systems or enzymatic reactions, or by microorganisms have been extensively studied and well documented by many investigators. Both degradative and synthetic reactions are observed and are very much dependent on various factors of the medium like aerobic, anaerobic or sterile conditions 48 azo-and azoxy-benzene, triazene, anilido azobenzene, phenoxazine, phenoxazine-one and biphenyls. 2) Acylation, which reduces the toxicity of parent compounds.…”

Impact of addition of amendments on the degradation of DDT and its residues partitioned on soil

“…On the other hand, many other studies report that rates of DDT mineralization in soils is very slow (Guenzi and Beard, 1970;Zayed et al, 1994). In one study, less than 3.1% of radioactively labelled DDT adsorbed on soil was released as carbon dioxide after 42 d of incubation (Scheunert et al, 1987). Other studies reported that flooding of soils reduced the quantity of carbon dioxide that evolved from DDT mineralization (Nair et al, 1992;Boul, 1995), which may indicate that the degradation was even slower in anaerobic condition.…”