The diluted sample solutions (1 μL; 0.1 mg/mL) in 1:9 (v/v) water/methanol were supplied to the source directly via a syringe. The analysis was performed on a Bruker Maxis Impact quadrupole time-of-flight mass spectrometer (Bruker Daltonics, Bremen, Germany) operated in negative ion mode. Instrument calibration was performed using sodium formate clusters. The electrospray interphase settings were as follows: nebulizer pressure, 0.6 bar; drying gas, 4 L/min; temperature, 180 °C; and capillary voltage, 4500 V. The scan range was from m/z 50 to 1000. Tandem mass spectrometry (MS/MS) for the ions [M − H]− under negative mode was carried out in MRM mode using collision energy ranging from 5 to 20 eV. The data were analyzed using Bruker Compass Data Analysis software (version 4.2) Bruker, Bremen, Germany. Each sample was analyzed in duplicate from independent trials.
Maxis impact quadrupole time of flight mass spectrometer
Manufactured by Bruker
Sourced in Germany
The Maxis Impact quadrupole time-of-flight mass spectrometer is a high-performance analytical instrument designed for precise mass analysis. It combines a quadrupole mass analyzer with a time-of-flight analyzer, enabling accurate mass determination and detailed structural information. The instrument is capable of performing a wide range of mass spectrometry analyses, including quantitative and qualitative analysis of samples.
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Lab products found in correlation
2 protocols using maxis impact quadrupole time of flight mass spectrometer
1
Negative-Ion Mass Spectrometric Analysis
2
Quantitative Analysis of Compounds by ESI-MS
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The samples were diluted in methanol (90% v/v) before analyzing by ESI/qTOF/MS. The system used was a Bruker Maxis Impact quadrupole time-of-flight mass spectrometer (Bruker Daltonics, Bremen, Germany) operating in positive ion mode. Calibration of the instrument was carried out by using sodium formate. The diluted samples were infused continuously into the detector. The acquisition parameters for electrospray interface were the following; nebulizer pressure, 0.6 Bar; drying gas, 4.0 L/min, 180 °C; capillary voltage, 4500 V. Scan range was done from m/z 90 to 1000. The data were analyzed by Bruker Compass Data Analysis software version 4.2. Tandem mass spectrometry (MS/MS) was carried out in multiple reaction monitoring (MRM) mode using 35 eV and 18eV collision energies for the ion at [M+N]+ = 212.0688 and 35eV for the ion at [M+Na]+ = 311.1154.
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