96201-07-9Relevant articles and documents
The Precursor Scan. A New Type of Experiment in Neutralization-Reionization Mass Spectrometry
Gu, Ming,Turecek, Frantisek
, p. 1135 - 1143 (1993)
A new scan technique utilizing the tandem quadrupole acceleration-deceleration mass spectrometer is described.The technique is based on combined monitoring of neutral and ion precursors that fragment following collisional electron transfer to give rise to a selected low-mass neutral species and its ion, respectively.PO(.) is found to be a stable neutral species formed by dissociations of a variety of oxidized phosphorus compounds, such as di- and trialkyl phosphites, phosphates and phosphonic esters.These compounds can be selectively monitored through PO(.) precursor scans in multi-component mixtures.Interferences from isobaric neutral species, 35ClC(.), CH3S(.), CH330SiH2(.), and their precursors are discussed.Neutralization-reionization spectra of phosphorus-containing radicals, PO(.), CH3OPH(.), CH3OPOH(.), (.)P(OCH3)2 and (CH3O)2PO(.), are also reported.
A stable isotope deuterium-labeled organophosphorus insecticide method for the synthesis of
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Paragraph 0069; 0071; 0072, (2016/10/09)
The invention relates to a synthesis method of a stable isotope deuterium-labeled organophosphorus insecticide. The synthesis method comprises the steps of: making stable isotope deuterium-labeled or natural abundance methyl alcohol react with phosphorus trichloride to generate a stable isotope deuterium-labeled dimethyl phosphite or trimethyl phosphite, and then making the stable isotope deuterium-labeled dimethyl phosphite or trimethyl phosphite react with stable isotope deuterium-labeled or natural abundance trichloracetic aldehyde to obtain the stable isotope deuterium-labeled organophosphorus insecticide. Compared with the prior art, the stable isotope deuterium-labeled trichlorphon or dichlorvos provided by the invention has the advantages that the chemical purity reaches above 98.0 percent and the isotope abundance reaches above 98.0 percent atomD after being separated and purified, thus fully meeting the demand on residue detection in the field of food safety.
GC-MS STUDY OF THE IMIDE - AMIDE REARRANGEMENT
Gilyarov, V. A.,Shcherbina, T. M.,Laretina, A. P.,Kabachnik, M. I.
, p. 1931 - 1934 (2007/10/02)
The imide - amide rearrangement of trialkyl arylimidophosphates by the action of catalytic amounts of boron trifluoride etherate proceeds at least partially by an intermolecular mechanism.Keywords: capillary gas-liquid chromatography/mass spectrometry, im
