Protection goals, criteria and scenarios : 9 - 11 October 2007

Protection goals, criteria and scenarios of Sino, Dutch Pesticide Environmental Risk Assessment Projec

Mineralization of Acephate, a Recalcitrant Organophosphate Insecticide Is Initiated by a Pseudomonad in Environmental Samples

An aerobic bacterium capable of breaking down the pesticide acephate (O,S-dimethyl acetyl phosphoramidothioic acid) was isolated from activated sludge collected from a pesticide manufacturing facility. A phylogenetic tree based on the 16 S rRNA gene sequence determined that the isolate lies within the Pseudomonads. The isolate was able to grow in the presence of acephate at concentrations up to 80 mM, with maximum growth at 40 mM. HPLC and LC-MS/MS analysis of spent medium from growth experiments and a resting cell assay detected the accumulation of methamidophos and acetate, suggesting initial hydrolysis of the amide linkage found between these two moieties. As expected, the rapid decline in acephate was coincident with the accumulation of methamidophos. Methamidophos concentrations were maintained over a period of days, without evidence of further metabolism or cell growth by the cultures. Considering this limitation, strains such as described in this work can promote the first step of acephate mineralization in soil microbial communities

Environmental data requirements for the Chinese Pesticide Registration November 13 - 16, 2007

Project description for how to support China with environmental data requirements for the Chinese pesticide registration : November 13 – 16, 200

CCDC 272876: Experimental Crystal Structure Determination

Related Article: R.T.Watson, Chuanjiang Hu, D.G.VanDerveer, D.T.Musashe, P.S.Wagenknecht|2006|Inorg.Chem.Commun.|9|180|doi:10.1016/j.inoche.2005.10.026,An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures

CCDC 614925: Experimental Crystal Structure Determination

Related Article: M.T.Vagnini, W.C.Rutledge, Chuanjiang Hu, D.G.VanDerveer, P.S.Wagenknecht|2007|Inorg.Chim.Acta|360|1482|doi:10.1016/j.ica.2006.08.037,An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures