This was achieved via solid phase extraction (SPE) coupled on-line to ultra-high performance liquid chromatography electrospray ionization triple stage quadrupole mass spectrometry.
Accela U-HPLC system coupled to a TSQ Quantum Access MAX triple stage quadrupole mass spectrometer carried out the LC MS analysis (Thermo Scientific Corporation, USA) that was controlled with Xcalibur software version 2.2.
HPLC-ESI-MS analyses were performed on a TSQ Quantum Access Max Triple Stage Quadrupole Mass Spectrometer (Thermo Fisher Scientific Inc., Waltham, MA, USA) with an Accela 1250 UHPLC system equipped with an Accela 1250 photo diode array (PDA) detector, an Accela HTC PAL autosampler, and an Accela 1250 binary pump.
Prominent amongst them was rider Emanuele Sella, a triple stage winner, winner of the mountains classification, and a key rider to 's victory in the teams classification.
Plasma concentrations of 14 antimalarial drugs and their metabolites, i.e. artemether, artesunate, dihydroartemisinin, amodiaquine, N-desethyl-amodiaquine, lumefantrine, desbutyl-lumefantrine, piperaquine, pyronaridine, mefloquine, chloroquine, quinine, pyrimethamine and sulfadoxine, were determined by liquid chromatography coupled to tandem triple stage mass spectrometry (LC-MS/MS) [18].
OLS: ordinary least squares, 2LS: double stage least squares, 3LS: triple stage least squares.
The system was designed in triple stages at different operative pressures.
He attributes the appeal to the preparation, a triple-stage process that uses active yogurt cultures, allowing for a high enzyme count.
liquid chromatography triple-stage quadrupole mass spectrometry.
We consider single-stage, double-stage, and triple-stage configurations.
Total extraction efficiency of 99.12% was obtained by triple-stage countercurrent extraction.
