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Traceable Amino Acid Analyses of Proteins and Peptides by Isotope-Dilution Mass Spectrometry Using Precolumn Derivatization Reagent
Traceable Amino Acid Analyses Proteins and Peptides Isotope-Dilution Mass Spectrometry
2010/9/17
We have developed an accurate and traceable quantitation method of proteins and peptides by isotope-dilution mass spectrometry with the precolumn derivatization for hydrolyzed amino acid. This method ...
Visualization of Spatial Distribution of γ-Aminobutyric Acid in Eggplant (Solanum melongena) by Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry
Visualization Spatial Distribution γ-Aminobutyric Acid
2010/9/14
We applied imaging mass spectrometry (IMS) to determine the spatial distribution of γ-aminobutyric acid (GABA). We found that GABA had a specific localization in seeds. We also visualized various biom...
MALDI Mass Spectrometry Using 2,4,6-Trihydroxyacetophenone and 2,4-Dihydroxyacetophenone with Cyclodextrins: Suppression of Matrix-related Ions in Low-molecular-weight Region
2,4,6-Trihydroxyacetophenone 2,4-Dihydroxyacetophenone Cyclodextrins
2010/9/14
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry of a model peptide, Substance P (SubP), was carried out using 2,4,6-trihydroxyacetophenone (THAP) and 2,4-dihydroxyacetophenone (D...
Determining the sea-air flux of dimethylsulfide by eddy correlation using mass spectrometry
sea-air flux dimethylsulfide eddy correlation mass spectrometry
2010/2/8
Mass spectrometric measurement of DMS by atmospheric pressure ionization with an isotopically labeled standard (APIMS-ILS) is a sensitive method with sufficient bandpass for direct flux measurements b...
Measurement of Transport Activities of Bile Acids in Human Multidrug Resistance-Associated Protein 3 Using Liquid Chromatography–Tandem Mass Spectrometry
Transport Activities Bile Acids Human Multidrug Resistance-Associated Protein 3 Liquid Chromatography–Tandem Mass Spectrometry
2010/9/17
A method has been developed for the measurement of transport activities in membrane vesicles obtained from human multidrug resistance-associated protein 3-expressing Sf9 cells for 1β-hydroxy-, 6α-hydr...
Multielemental Characterization of Airborne Particulate Matter Collected in Bucharest and Tokushima by Inductively Coupled Plasma Mass Spectrometry and Inductively Coupled Plasma Atomic Emission Spectrometry
Multielemental Characterization Airborne Particulate Matter Collected Bucharest Inductively Coupled Plasma Mass Spectrometry Inductively Coupled Plasma Atomic Emission Spectrometry
2010/9/19
Airborne particulate matter (PM) collected in Bucharest (Romania) and Tokushima (Japan) was comprehensively characterized through multielemental analysis by ICP-MS to the PM samples. Prior to an eleme...
Simultaneous Determination of Estradiol Valerate and Medroxyprogesterone Acetate in a Tablet Formulation by Gas Chromatography–Mass Spectrometry
Estradiol Valerate Medroxyprogesterone Acetate Gas Chromatography–Mass Spectrometry
2010/9/19
A new and simple gas chromatography–mass spectrometry (GC-MS) method has been developed for simultaneous determination of estradiol valerate (EV) and medroxyprogesterone acetate (MPA) in a tablet form...
Pressurized Liquid Extraction and Cleanup Procedure for the Determination of Pyrethroids in Soils Using Gas Chromatography/Tandem Mass Spectrometry
Pressurized Liquid Extraction Cleanup Procedure Pyrethroids Soils Using Gas Chromatography/Tandem Mass Spectrometry
2010/9/20
An analytical method for the simultaneous determination of 12 pyrethroids in soil samples was developed using gas chromatography tandem quadrupole mass spectrometry. Pyrethroids were extracted by pre...
Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 1: Fine particle composition and organic source apportionment
Mexico City aerosol mass spectrometry Fine particle composition organic source apportionment
2009/9/14
Submicron aerosol was analyzed during the MILAGRO field campaign in March 2006 at the T0 urban supersite in Mexico City with a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and...
Developments in accelerator mass spectrometry (AMS) method for 182Hf
182Hf accelerator mass spectrometry (AMS) HfF4 injector solid-phase reaction
2009/8/14
The present detection limit for 182Hf at CIAE HI-13 AMS systems could not satisfy various applications (e. g. detection of a nearby supernovae signal). Therefore, techniques were developed in this wor...
Photodegradation of secondary organic aerosol generated from limonene oxidation by ozone studied with chemical ionization mass spectrometry
Photodegradation secondary organic aerosol limonene oxidation
2009/6/16
Photodegradation of secondary organic aerosol (SOA) prepared by ozone-initiated oxidation of D-limonene is studied with an action spectroscopy approach, which relies on detection of volatile photoprod...
Chlorine activation by N2O5:simultaneous,in situ detection of ClNO2 and N2O5 by chemical ionization mass spectrometry
Chlorine activation N2O5 simultaneous ClNO2 N2O5 chemical ionization mass spectrometry
2010/2/8
We report a new method for the simultaneous in situ detection of nitryl chloride (ClNO2) and dinitrogen pentoxide (N2O5) using chemical ionization mass spectrometry (CIMS). The technique relies on the...
Oligomers, organosulfates, and nitrooxy organosulfates in rainwater identified by ultra-high resolution electrospray ionization FT-ICR mass spectrometry
Oligomers organosulfates nitrooxy organosulfates FT-ICR mass spectrometry
2009/5/7
Wet deposition is an important removal mechanism for atmospheric organic matter, and a potentially important input for receiving ecosystems, yet less than 50% of rainwater organic matter is considered...
Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS)
Measurement atmospheric sesquiterpenes proton transfer reaction-mass spectrometry
2010/2/8
The ability to measure sesquiterpenes (SQT; C15H24) by a Proton-Transfer-Reaction Mass Spectrometer (PTR-MS) was investigated. SQT calibration standards were prepared by a capillary diffusion method a...
Measurements of Volatile Organic Compounds Using Proton Transfer Reaction – Mass Spectrometry during the MILAGRO 2006 Campaign
Volatile Organic Compounds Proton Transfer Reaction Mass Spectrometry MILAGRO
2009/3/12
Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mex...