Mass spectrometry molinate

Products of Semiconductor-catalyzed Molinate emd Thiobencarb Oxidation. Examination of the photooxid tion products of molinate by GC-MS provided evidence of seven substemces sufficiently stable 2uid concentrated to be chromatographed and detected by mass spectrometry (molinate sulfoxide und sulfone decomposed). 

Debrauwer, L. Rathahao, E. Jouanin, I. Paris, A. Clodic, G. Molines, H. Convert, O. Fournier, F. Tabet, J. C. Investigation of the regio- and stereoselectivity of deoxygua-nosine linkage to deuterated 2-hydroxyestradiol by using liquid chromatography/ESI-ion trap mass spectrometry. J. Am. Soc. Mass Spectrom. 2003, 14, 364—372. 

Analysis of pesticides (eight in total, namely, molinate, propanil, fenitrothion, malathion, bentazone, cypermetrine, maloxon, and fenitrothion oxon) in biota was accomplished with a method based on pressurized liquid extraction (ASE), followed by SPE clean-up, and analysis by gas chromatography-mass spectrometry with electron impact ionization (GC/MS-EI). 

Atrazine, simazine, terbuthylazine, molinate Solid-phase microwave-assisted extraction using methanol Gas chromatography-mass spectrometry. Limit of detection 1-10 ng/g [382]... 

The atrazine, molinate, and bentazone behavior in soils when submitted to an electric field is presented as a case study. The applicability of the electrokinetic process in these herbicides soil remediation is evaluated. Four polluted soils were used, respectively with and without herbicides residues, with the last ones being spiked. Eleven electrokinetic experiments were carried out at a laboratory scale. Determination of the herbicide residues were performed by different methods by ELISA for atrazine, by GC-FID for molinate, and by HPLC-UV for molinate and bentazone residues. GC hyphenated with mass spectrometry was used to confirm and identify molinate on the samples. 

Figure 3 SPE-LC-APCI-MS chromatogram of 200 ml tap water spiked with 0.04 ng ml of pesticides and 0.05 ng ml IS tert-butylazine in positive-ion mode and dinoterb in negative-ion mode). Peak identification 1, bentazone 2, Vamidothion 3,4-nitrophenol 4, MCPA 5, mecoprop 6, dinoseb 7, atrazine 8, isoproturon 9, ametryn 10, malathion 11, fenotrothion 12, molinate 13, prometryn 14, terbutryn and 15, parathion-ethyl. (Reprinted with permission from Aguilar C, Ferrer I, Bormll F, Marce RM, and Barcelo D (1998) Comparison of automated on-line solid-phase extraction followed by liquid chromatography-mass spectrometry with atmospheric-pressure chemical ionization and particle-beam mass spectrometry for the determination of a priority group of pesticides in environmental waters. Journal of Chromatography A 794 147-163 Elsevier.)...

Borba da Cunha, A. C., M. J. Lopez de Alda, D. Barcelo et al. 2004. Multianalyte determination of different classes of pesticides (acidic, triazines, phenyl ureas, anilines, organophosphates, molinate and propanil) by liquid chromatography-electrospray-tandem mass spectrometry. Anal. Bioanal. Chem. 378 940-954. 

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