Five phospholipids in human placenta were determined by phosphorus 31 nuclearmagnetic resonance(<sup>31</sup>P NMR)spectroscopy and thin-layer chromatography(TLC
Phenothiazine and i<sup>+</sup>s derivatives were oxidized by l<sub>2</sub> and 2,2,6,6-tetrametbyl-4-acetyloxypiperidine oxoammonium hexachloroantimonate to th
A method for simultaneously analyzing altemariol(AOH), altemariol monomethyl ether (AME) and zearalenone(ZEA) by particle beam LC/MS was established, LC separat