PMID- 12757790 OWN - NLM STAT- MEDLINE DCOM- 20031009 LR - 20171116 IS - 0045-6535 (Print) IS - 0045-6535 (Linking) VI - 52 IP - 5 DP - 2003 Aug TI - Behavior of 1,3-dichloropropene and methyl isothiocyanate in undisturbed soil columns. PG - 893-9 AB - To develop alternatives to methyl bromide (MeBr) for soil disinfection under environmental Moroccan conditions, distribution and persistence of 1,3-dichloropropene (1,3-D) and methyl isothiocyanate (MITC) were tested in undisturbed soil columns (12 cm internal diameter, 1 m length). 1,3-D was injected at a 15 cm depth and directly followed by metam-sodium (a precursor of MITC), which was applied at the soil surface of the same column using a peristaltic pump. Concerning the distribution of these fumigants in the soil profiles, our results showed that 24 h after treatment, 1,3-D and MITC were concentrated at the 0-40 cm soil layers, and reached the deeper layers 48 h later. MITC and 1,3-D dissipation was studied and the half-life (DT50) measured were 6.5 and 8 days, respectively. Total volatilization losses reached 9% for MITC and 28% for 1,3-D. MITC and 1,3-D volatilization was found to be influence by soil water contents. The results show that by reducing volatilization, photodegradation and leaching of these fumigants a suitable alternative to MeBr use is offered. FAU - El Hadiri, N AU - El Hadiri N AD - Physical Chemistry Laboratory, Department of Chemistry, Faculte des Sciences, Semlalia, Marrakech, Morocco. FAU - Ammati, M AU - Ammati M FAU - Chgoura, M AU - Chgoura M FAU - Mounir, K AU - Mounir K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Allyl Compounds) RN - 0 (Disinfectants) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Insecticides) RN - 0 (Isothiocyanates) RN - 0 (Soil) RN - 059QF0KO0R (Water) RN - 9H780918D0 (1,3-dichloro-1-propene) RN - RWE2M5YDW1 (methyl isothiocyanate) SB - IM MH - Allyl Compounds/analysis/*chemistry MH - Disinfectants/analysis/chemistry MH - Fumigation/methods MH - Half-Life MH - Hydrocarbons, Chlorinated MH - Insecticides/analysis/chemistry MH - Isothiocyanates/analysis/*chemistry MH - Soil/*analysis MH - Volatilization MH - Water/chemistry EDAT- 2003/05/22 05:00 MHDA- 2003/10/10 05:00 CRDT- 2003/05/22 05:00 PHST- 2003/05/22 05:00 [pubmed] PHST- 2003/10/10 05:00 [medline] PHST- 2003/05/22 05:00 [entrez] AID - S0045-6535(03)00109-7 [pii] AID - 10.1016/S0045-6535(03)00109-7 [doi] PST - ppublish SO - Chemosphere. 2003 Aug;52(5):893-9. doi: 10.1016/S0045-6535(03)00109-7.