Sentence examples for mass spectrometer parameters from inspiring English sources

After mass spectrometer parameters optimized, chromatographic conditions such as mobile phase optimization, column optimization, and extraction method optimization was performed to obtain a fast and selective LC method.

The mass spectrometer parameters like deflection potential, focussing potential, energy potential and collision cell exit potential was optimised for each analyte.

Mass spectrometer parameters were 2800 V for the capillary voltage in positive-ion, electrospray (ESI+) mode with cone and extraction voltages set at 20 V and 3 V respectively.

Table 1 Mass spectrometer parameters for nicotine and cotinine detection Analyte MRM transitions* Cone voltage (V) Collision potential (V) LOD (ng · mL-1) LOQ (ng · mL-1) Nicotine 163 > 130 (117) 32 22 1 2.5 Cotinine 177 > 98 (80) 42 30 1 2.5 * m/z of precursor ion > m/z of the fragment used for quantification (m/z of the fragment used for confirmation).

Mass spectrometer parameters were set as follows: capillary: 3500 3700 V, nebulizer: 10.2 psi, dry gas: 3 L min−1, dry temperature: 280 °C, collision energy: 10 eV, ion cooler RF: 550 Vpp, transfer time: 90 and 65 μs, pre puls storage: 30 μs, scan rate: 0.1 Hz, mass range: 50 3000 m/z.

The triple quadrupole mass spectrometer parameters were set as follows: nebulizing gas and drying gas were nitrogen at a flow rate of 3.0 and 15.0 L/min, respectively; the interface voltage was set to 4.5 kV; desolvation line (DL) temperature was 250 °C and the heat block temperature was 400 °C.

Mass spectrometer parameter settings were gas temperature (350°C), gas flow (10 L·minebulizerulizer (30 psi), sheath gas temperature (400°C), sheath gas flow (11 L·min−1), capillary voltage (3800 V) and nozzle voltage (500 V).

Mass spectrometer operating parameters were: interface temperature 300 °C, ion source 250 °C, and quadrupole 150 °C.

The mass spectrometer source parameters were varied in the range of 285 to 385°C for the source temperature, 75 to 175 V for the fragmentor voltage, and 3,000 to 4,000 V for the capillary voltage.

The LC/MS/MS system (Waters 2795 separation unit and a Quattro Micro API triple quadrupole mass spectrometer) and parameters were as described previously (Heather et al., 2010; Rodriguez-Cuenca et al., 2010) except that the multiple reaction monitoring (MRM) transitions were specific for Drosophila cardiolipin.

Table 2 Mass spectrometer source-dependent parameters Parameter ESI Positive ESI Negative Gas Temperature (°C) 275 225 Gas Flowrate (L/min) 11 10 Nebulizer (psi) 45 45 Sheath Gas Temperature (°C) 375 350 Sheath Gas Flowrate (L/min) 11 11 Capillary (V) 4000 3600 Nozzle Voltage (V) 0 1500 Delta EMV (V) 400 400.