Methods using PPT are simple and cheap but produce relatively dirty extracts which may reduce the lifetime of the chromatographic column, extend the cleaning/maintenance of the mass spectrometer or result in matrix effects [127]. LLE and SPE are effective in terms of producing clean extracts and...
At the same time, the in vitro hemocompatibility test showed that the APPT time increased only to 45 s for the heparin/chitosan coated vascular path, whereas the PVA-coated DCS possessed a 26 s APPT time. The same situation appeared for the PRT, PT, and TT times when the heparin/...