Potential for isoproturon, atrazine and mecoprop to be degraded within a chalk aquifer system

Stimulation of aerobic degradation of bentazone, mecoprop and dichlorprop by oxygen addition to aquifer sediment

“…However, mecoprop was removed substantially during the experiment (>50% in 180 days). The observed degradation potential of mecoprop is in accordance with previous investigations involving chalk under aerobic conditions (Janniche et al, 2011, Johnson et al, 2000, although these lag phases were slightly shorter. In a study of the importance of initial concentration on biodegradation kinetics, mecoprop degradation was faster at a concentration of 100 µg L -1 than at 1 µg L -1 (Toräng et al, 2003).…”

The role of microbial community composition and groundwater chemistry in determining isoproturon degradation potential in UK aquifers

“…a Ranking of the estimated values of S Ã , L 0 and H 0 is from least diverse (1) to most diverse (6).…”

Should We Be Concerned with Long-Term Health Problems Associated with Pesticides in Namibian Groundwater?

“…Of the common pesticides and herbicides, Carbofuran, Alachlor, Ametryn, Atrazine and Isoproturon have been studied to see how they degrade in agricultural uses (e.g., Agrawal, 1999;Chilton et al, 1995;Harrison et al, 1998;Johnson et al, 1998;, although more work is still required similar to that of Houtman et al (2004) that traces endocrine disrupting compounds (EDCs) in sediments of river deltas. Most of the studies have been on laboratory batch experiments, a few on actual field samples of the groundwater and surface waters (Chilton et al, 1995;Johnson et al, 1998Johnson et al, & 2000. Carbofuran breaks down to a 3-OH-7-phenol group when quantities of 12 kg per hectare are applied, with groundwater analyses picking up concentrations of 10-60 lg/l (Chilton et al, 2000).…”