The LC-ESI-MS/MS analysis was carried out using a LCMS-8030 triple quadrupole mass spectrometer (Shimadzu, Kyoto, Japan) equipped with an electrospray ionization (ESI). The mass spectrometer was operated in negative ion mode with a nebulizing gas flow of 1.5 L/min, a dry gas flow rate of 12 L/min, a block source temperature of 400°C, a DL (dissolving line) temperature of 250°C, the full scan spectra from 50 to 2000 Da, and the negative ionization mode source voltage-4500 V.
Lcms 8030 triple quadrupole mass spectrometer
The LCMS-8030 is a triple quadrupole mass spectrometer manufactured by Shimadzu. It is a high-sensitivity analytical instrument designed for the detection and quantification of a wide range of compounds in complex samples. The LCMS-8030 utilizes tandem mass spectrometry technology to provide reliable and accurate results.
Lab products found in correlation
14 protocols using lcms 8030 triple quadrupole mass spectrometer
HPLC-MS/MS Analysis of Phenolics
The LC-ESI-MS/MS analysis was carried out using a LCMS-8030 triple quadrupole mass spectrometer (Shimadzu, Kyoto, Japan) equipped with an electrospray ionization (ESI). The mass spectrometer was operated in negative ion mode with a nebulizing gas flow of 1.5 L/min, a dry gas flow rate of 12 L/min, a block source temperature of 400°C, a DL (dissolving line) temperature of 250°C, the full scan spectra from 50 to 2000 Da, and the negative ionization mode source voltage-4500 V.
LC-MS/MS Analysis of Complex Matrices
were analyzed by means of an LCMS-8030 triple quadrupole mass spectrometer
(Shimadzu, Kyoto, Japan) using LabSolutions software (version 5.82).
The electrospray ionization (ESI) interface was operated with a syringe
pump (Legato Nano; KD Scientific, Holliston, MA) infusing the sample
at a flow rate of 30 μL min–1. The nebulizing
gas (nitrogen) flow rate was 2 L min–1, while the
drying gas (nitrogen) flow rate was 15 L min–1.
The desolvation line temperature was 250 °C, while the heating
block temperature was 400 °C. The voltages of the ESI needle
were +4.5 and −3.5 kV in the positive- and negative-ion modes,
respectively. Depending on the experiment, the instrument was operated
in Q3 scan (m/z range, 20–2000),
product ion scan, or multiple reaction monitoring (MRM) mode. In the
case of product ion scan and MRM modes, different collision energies
were tested: −10, −20, and −30 V for positive
ions and 10, 20, and 30 V for negative ions. MRM transitions: 294.00
→ 250.00 for diclofenac, 152.00 → 110.00 for acetaminophen,
89.00 → 43.00 for lactic acid, 120.00 → 74.00 for threonine.
Instrumental blank signals were recorded for ∼2 min, followed
by recording sample signals for ∼2 min. The extracted ion currents
were obtained for 1 unit intervals in the m/z scale. The final values correspond to the average of extracted
ion currents from 1 min recording.
LC-MS Analysis of Metabolites
HPLC-MS Analysis of Metabolites
Carotenoid Identification via UFLC-LCMS
LC-MS/MS Analysis of Estradiol
Simultaneous UHPLC-DAD-MS Analysis of Compounds
For analyses, 0.1% formic acid in LC-MS water (A) and acetonitrile (B) were used as solvents with the following gradient: 5% B to 95% B in 45 min held for 15 min. The post-run time was set to 10 min, the temperature to 30 °C. The flow rate was 0.2 mL/min. The injection volume was 2.00 μL. Base Peak Chromatograms (BPC) were recorded in the positive and negative ionization mode for a mass range of m/z 200–1500 and m/z 200–1000 respectively. PDA chromatograms were recorded at 360 and 254 nm.
Yin-Chen-Hao-Tang Bioactive Compound Analysis
LCMS-Based Identification of Phenolic Compounds
The following data refer to the settings for the identification of 2″-O-galloyl hyperoside. A mixture of water and MeOH containing 0.1% acetic acid (50:50) with a flow rate of 0.6 mL min−1 was used as mobile phase. The following ESI interface conditions were set: nebulization gas flow at 3 L min−1, desolvation line temperature at 250 °C, heating block temperature at 400 °C and drying gas flow at 15 L min−1. Nitrogen served as nebulizer and argon as collision gas. The ESI ion source was used in negative and positive modes. A scan in a range m/z 100 up to 1000 was performed first, followed by MRM (multiple reaction monitoring) optimization, in which the five most intense MRM transitions were analyzed. For the identification of 7-methyl juglone, the ESI interface conditions were set as follows: nebulization gas flow at 3 L min−1, desolvation line temperature at 300 °C, heating block temperature at 500 °C and drying gas flow at 10 L min−1. The other conditions were the same as for 2″-O-galloyl hyperoside.
Quantification of PGD2 in Lung Tissue
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