Routine quantification of 54 allergens in fragrances using comprehensive two‐dimensional gas chromatography‐quadrupole mass spectrometry with dual parallel secondary columns. Part I: Method development
Sign Up to like & getrecommendations! Published in 2018 at "Flavour and Fragrance Journal"
DOI: 10.1002/ffj.3416
Abstract: The forthcoming extension of the regulated fragrance allergen number is raising a challenge: the previously developed quantification methods need to be drastically improved in terms of rapidity, without altering their reliability. This work describes a… read more here.
Keywords: gas chromatography; secondary columns; gas; parallel secondary ... See more keywords
Influence of the RF drive potential on the acceptance behavior of pure quadrupole mass filters operated in stability zones A and B
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2020.116303
Abstract: Abstract The quadrupole acceptance of sinusoidal mass filters has been an area of interest for over fifty years. More recently, frequency dynamic rectangular waveform driven mass filters (colloquially digital mass filters) have been demonstrated. The… read more here.
Keywords: mass; mass filters; stability zones; acceptance behavior ... See more keywords
Coupling a Gaussian input beam to a quadrupole mass filter with round rods
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2020.116454
Abstract: Abstract We consider an input ion beam that has Gaussian distributions of the initial ion coordinates and transverse velocities at the entrance of a quadrupole mass filter (QMF) with round rods. To calculate the statistical… read more here.
Keywords: round rods; mass; ion; mass filter ... See more keywords
Analysis of electric fields in mass spectrometry
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2021.116620
Abstract: Abstract Analysis of two-dimensional and, in particular, three-dimensional fringing electric fields in quadrupole mass spectrometers is a challenging task. In this work, we consider an analytical approach for such analysis. We show how to obtain… read more here.
Keywords: quadrupole mass; mass spectrometry; mass; analysis ... See more keywords
Remarks concerning about the characteristics of the extractor vacuum gauge and the Quadrupole Mass Spectrometer
Sign Up to like & getrecommendations! Published in 2019 at "Measurement"
DOI: 10.1016/j.measurement.2018.08.043
Abstract: Abstract In this study, the stability of an extractor gauge (EXG) was investigated through the determination of correction factors (CFs) over a pressure range 5 × 10−5 Pa to 9 × 10−3 Pa by using a Spinning Rotor Gauge (SRG) traceable… read more here.
Keywords: quadrupole mass; mass spectrometer; gauge; metrology ... See more keywords
Initial SAM calibration gas experiments on Mars: Quadrupole mass spectrometer results and implications
Sign Up to like & getrecommendations! Published in 2017 at "Planetary and Space Science"
DOI: 10.1016/j.pss.2017.01.014
Abstract: Abstract The Sample Analysis at Mars (SAM) instrument suite of the Mars Science Laboratory (MSL) Curiosity rover is equipped to analyze both martian atmospheric gases and volatiles released by pyrolysis of solid surface materials, with… read more here.
Keywords: initial sam; mass spectrometer; calibration; quadrupole mass ... See more keywords
Analysis of brominated flame retardants and their derivatives by atmospheric pressure chemical ionization using gas chromatography coupled to tandem quadrupole mass spectrometry.
Sign Up to like & getrecommendations! Published in 2017 at "Talanta"
DOI: 10.1016/j.talanta.2016.10.060
Abstract: A validated method using an atmospheric pressure chemical ionization source for coupling gas chromatography (GC-APCI) to tandem quadrupole mass spectrometry (MS/MS) for the determination of brominated flame retardants (BFRs) is presented. Polybrominated diphenyl ethers (PBDEs),… read more here.
Keywords: gas chromatography; pressure chemical; tandem quadrupole; quadrupole mass ... See more keywords
Comprehensive Determination of Unregulated Pesticide Residues in Oregon Cannabis Flower by Liquid Chromatography Paired with Triple Quadrupole Mass Spectrometry and Gas Chromatography Paired with Triple Quadrupole Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Agricultural and Food Chemistry"
DOI: 10.1021/acs.jafc.9b01559
Abstract: A comprehensive multiresidue pesticide analysis for Cannabis flower matrices using quick, easy, cheap, effective, rugged, and safe (QuEChERS) sample preparation, liquid chromatography paired with triple quadrupole mass spectrometry (LC–MS/MS), and gas chromatography paired with triple… read more here.
Keywords: paired triple; quadrupole mass; mass spectrometry; triple quadrupole ... See more keywords
Chaotic shadow of a non-Kerr rotating compact object with quadrupole mass moment
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.104040
Abstract: We have studied numerically the shadows of a non-Kerr rotating compact object which belongs to Manko-Novikov family. The non-integrable photon motion caused by quadrupole mass moment affects sharply the shadow of the compact object. As… read more here.
Keywords: mass moment; shadow; compact object; quadrupole mass ... See more keywords
Acceptance and transmission of a quadrupole mass filter with a prefilter
Sign Up to like & getrecommendations! Published in 2017 at "Technical Physics"
DOI: 10.1134/s1063784217100036
Abstract: We have proposed an analytical model of a quadrupole mass filter with an additional rf quadrupole (prefilter) at its entry, which is based on the model of a transient field in the region between the… read more here.
Keywords: mass filter; prefilter; acceptance; quadrupole mass ... See more keywords
Isobaric mass tagging and triple quadrupole mass spectrometry to determine lipid biomarker candidates for Alzheimer's disease
Sign Up to like & getrecommendations! Published in 2019 at "PLoS ONE"
DOI: 10.1371/journal.pone.0226073
Abstract: The isobaric tagging method widely used in proteomic and lipidomic fields, with the multiple reaction monitoring (MRM) approach using a triple quadrupole mass spectrometer, was applied to identify biomarker candidates from plasma samples for Alzheimer’s… read more here.
Keywords: alzheimer disease; biomarker candidates; mass; triple quadrupole ... See more keywords