[PDF] Top 20 Methods to detect volatile organic compounds using selected-ion chemical ionization mass spectrometry
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Methods to detect volatile organic compounds using selected-ion chemical ionization mass spectrometry
... purified using a Barnstead NANOpure system, 18MΩ) was interfaced to the glow discharge ionization source as described in Chapter 2 (Figure ...controlled using a metering ...a chemical freezer ... See full document
190
New Particle Formation in the Atmosphere: From Molecular Clusters to Global Climate
... fundamental chemical mechanisms leading to nucleation and growth of ...the chemical species contri- buting to nucleation and growth of nanoparticles have yet to be unambiguously ...amines), organic ... See full document
49
Fast Detection of Volatile Organic Compounds from Bacterial Cultures by Secondary Electrospray Ionization Mass Spectrometry
... sensitive methods are required. Detection of bacterial headspace VOCs via mass spectrometry (MS) methods has been under development for more than 3 ...with mass spectrometry ... See full document
7
Using collision-induced dissociation to constrain sensitivity of ammonia chemical ionization mass spectrometry (NH4+ CIMS) to oxygenated volatile organic compounds
... Abstract. Chemical ionization mass spectrometry (CIMS) instruments routinely detect hundreds of oxidized organic compounds in the ...time-of-flight chemical ... See full document
10
Revisiting benzene cluster cations for the chemical ionization of dimethyl sulfide and select volatile organic compounds
... Chemical-ionization mass spectrometry (CIMS) is in- creasingly utilized as a fast, sensitive, and selective mea- surement technique for in situ detection of reactive trace gas species (Huey, ... See full document
12
Formation of Mercury(II) Glutathione Conjugates Examined Using High Mass Accuracy Mass Spectrometry
... GSH using high resolution mass ...low-resolution mass spectrometers, and we felt that an investigation using high resolution mass spectrometry would be useful to validate earlier ... See full document
5
MS/MS studies for the selective detection of isomeric biogenic VOCs using a Townsend Discharge Triple Quadrupole Tandem MS and a PTR-Linear Ion Trap MS
... Reaction Mass Spectrometry (PTR-MS) is a powerful method for fast and sensitive determination of atmospheric VOCs (Lindinger et ...high mass resolution time-of-flight MS (M¨uller et ...PTR ion ... See full document
10
Real-time measurements of gas-phase organic acids using SF6− chemical ionization mass spectrometry
... typical mass spectra obtained under back- ground and measurement modes during the field ...reagent ion is present at m/z 146. One of the promi- nent species in the mass spectrum is formic acid, which ... See full document
18
Identification of volatile organic compounds of some Trichoderma species using static headspace gas chromatography-mass spectrometry
... of volatile fungal metabolites usually is determined by gas chromatography (GC) methods and has been detected for different fungal genera such as Aspergillus, Fusarium, Mucor, Penicillium and Trichoderma ... See full document
9
Applications of SIFT MS to the Environment and Petroleum Exploration
... field. Using soft ionisation, from the chemical ionization reaction of multiple reagent ions, has helped solve complex structural mass spectrum problems that are found in the selected ... See full document
177
Constraining Anthropogenic and Biogenic Emissions using Chemical Ionization Mass Spectrometry
... and Chemical Transformation (ITCT) 2K2 field campaign and the NASA DC-8 aircraft during the California portion of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites ... See full document
120
The volatilome – investigation of volatile organic metabolites (VOM) as potential tumor markers in patients with head and neck squamous cell carcinoma (HNSCC)
... the volatile metabolites a classifi- cation between the two investigated study cohorts can be carried ...other chemical compounds in the dendrogram due to their similarity in the renal excretion ... See full document
13
Egg laying hormone peptides in the aplysiidae family
... confirmed using MALDI ISD analysis, in which a series of Cn-type ions were ...the mass difference between two consecutive ladder ions. Since the low mass gate was set at m/z 500, only the ladder ions ... See full document
13
Multi-scheme chemical ionization inlet (MION) for fast switching of reagent ion chemistry in atmospheric pressure chemical ionization mass spectrometry (CIMS) applications
... multifunctional compounds (HOM, highly oxygenated organic molecules), which are present at around 10 5 to 10 7 cm −3 (Eisele and Tanner, 1993; Sipilä et ...sticky compounds) causing depletion and ... See full document
12
Simultaneous quantification of proposed anti malarial combination comprising of lumefantrine and CDRI 97–78 in rat plasma using the HPLC–ESI MS/MS method: application to drug interaction study
... In this study, a highly sensitive, specific, reproducible, and high-throughput LC–ESI-MS/MS assay has been developed and validated to quantify LUME and CDRI 97–78 following protein precipitation extraction tech- nique ... See full document
9
Chemical ionization and collision induced dissociation mass spectrometry
... The spectrum recorded using carbon tetrafluoride as a collision gas, does not have particularly abundant low mass fragment ions.. A possible explanation for this deviation follows the ar[r] ... See full document
123
An ion-neutral model to investigate chemical ionization mass spectrometry analysis of atmospheric molecules – application to a mixed reagent ion system for hydroperoxides and organic acids
... atmospheric ion chemistry mechanisms, thermodynamic data and reaction rate ...The chemical mechanism was augmented with additional reactions and their reaction rate coefficients specific to the ...of ... See full document
31
Calibration and intercomparison of acetic acid measurements using proton-transfer-reaction mass spectrometry (PTR-MS)
... (HS)) using a conversion kit supplied by the manufacturer (de Gouw and Warneke, ...the ion source 120 ◦ , it was possible to replace the orig- inal 32-cm-long, ...the ion source through the skimmer ... See full document
12
Low-pressure gas chromatography with chemical ionization mass spectrometry for quantification of multifunctional organic compounds in the atmosphere
... these compounds were quantitatively de- termined by Fourier transform infrared (FTIR) spectroscopy before undergoing dilution and CIMS sampling (see Sup- plement for additional details regarding calibration proce- ... See full document
18
Constraining the sensitivity of iodide adduct chemical ionization mass spectrometry to multifunctional organic molecules using the collision limit and thermodynamic stability of iodide ion adducts
... of ion–molecule reaction time, which is strongly influenced by mixing and ion losses in the ion–molecule reaction drift ...A mass spectromet- ric voltage scanning procedure elucidates the ... See full document
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