Profiles of strongly polar and less polar acids obtained from human blood, plasma and serum by two-step ultrafiltration.
H Thoma, J Reiner, G Spiteller
Index: J. Chromatogr. A. 309(1) , 17-32, (1984)
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Abstract
A two-step ultrafiltration method combined with anion-exchange chromatography is described for the separation of lipophilic and strongly lipophobic acids occurring in human blood, serum and plasma. After treatment with diazomethane, the acid fractions are separated further by gas chromatography. The acids were identified by their mass spectra. Profiles obtained from the strongly acidic fraction of blood samples of healthy individuals are characterized by main peaks corresponding to organic phosphoric acid esters. The peaks are absent in plasma and serum.
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