Ammonium acetate 乙酸铵 HPLC

Quantitation of Tacrolimus in Whole Blood Using High Performance Liquid Chromatography-Tandem Mass Spectrometry (HPLC-MS-MS)

, Norwalk, CT) used as an extraction column; a Nova-Pak C18 analytical column (2.1 � 150 mm I.D., 4 μm, Waters Corp, Milford, MA); washing solution, methanol: 30 mM ammonium acetate pH 5.1 (80:20); eluting solution, methanol:30 mM ammonium acetate pH 5.1 (97

Quantification of Busulfan in Plasma Using Liquid Chromatography Electrospray Tandem Mass Spectrometry (HPLC-ESI-MS/MS)

performance liquid chromatography combined with electrospray positive ionization tandem mass spectrometry (HPLC-ESI-MS/MS). Busulfan is isolated from plasma after internal standard (busulfan-D8 )–methanol extraction, dilution with mobile phase (ammonium

Quantitation of Iothalamate in Urine and Plasma Using Liquid Chromatography Electrospray Tandem Mass Spectrometry (HPLC-ESI-MS/MS)

of nitrogen. The residue is reconstituted in ammonium acetate–formic acid–water. The reconstituted plasma and filtered urine are injected into the HPLC-ESI-MS/MS. Iothalamate and iohexol show similar retention times in plasma and urine. Quantification