An analytical method for the determination of 14 organophosphorus flame retardants (OPFRs), including halogenated OPFRs, non-halogenated OPFRs and triphenyl phosphine oxide (TPPO) in biological samples was developed using gas chromatography-mass spectrometry (GC/MS). Biological samples were extracted using microwave-assisted extraction (MAE)
Hydrolysis of acetyl dimethyl phosphate, a reactive acyl phosphate.
The transfer of 17O and/or 18O from (COOH-17O or -18O) enriched substrates to inorganic phosphate (Pi) has been demonstrated for two enzyme-catalyzed reactions involved in folate biosynthesis and glutamylation. COOH-18O-labeled folate, methotrexate, and dihydropteroate, in addition to [17O]-glutamate, were synthesized
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 56A(10), 1855-1867 (2000-09-16)
Trimethyl phosphate (TMP) and acetylene were codeposited in nitrogen and argon matrices and adducts of these species were identified using infrared spectroscopy. Formation of the adducts was evidenced by shifts in the vibrational frequencies of the modes involving the TMP
Journal of the American Chemical Society, 128(3), 714-715 (2006-01-19)
In ultralow magnetic fields, liquid state nuclear magnetic resonance (NMR) spectra of homonuclear spin systems exhibit line widths dominated by their natural lifetime. Chemical shifts become negligible, and heteronuclear NMR spectra show predominantly the electron-mediated field-independent J-coupling. However, weak polarization
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