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[PDF] Top 20 Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry

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Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry

Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry

... Aiken, A. C., Salcedo, D., Cubison, M. J., Huffman, J. A., DeCarlo, P. F., Ulbrich, I. M., Docherty, K. S., Sueper, D., Kimmel, J. R., Worsnop, D. R., Trimborn, A., Northway, M., Stone, E. A., Schauer, J. J., Volkamer, ... See full document

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Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry

Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry

... fraction of the total measured oxygen. The deviation of the intercept from zero could also be explained by a negative bias in the detection of ...AMS elemental analysis only con- siders ... See full document

10

Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NO<sub>x</sub> system

Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NO<sub>x</sub> system

... Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS), aerosol is sampled at atmo- spheric pressure through an aerodynamic lens into a par- ticle ... See full document

23

Aqueous-phase photooxidation of levoglucosan &amp;ndash; a mechanistic study using aerosol time-of-flight chemical ionization mass spectrometry (Aerosol ToF-CIMS)

Aqueous-phase photooxidation of levoglucosan &ndash; a mechanistic study using aerosol time-of-flight chemical ionization mass spectrometry (Aerosol ToF-CIMS)

... an Aerosol CIMS. Since then, Aerosol CIMS has been employed to investigate aqueous-phase organic chem- istry (Sareen et ...strength of Aerosol CIMS lies in the fast time re- sponse, ... See full document

12

Elemental ratio measurements of organic compounds  using aerosol mass spectrometry: characterization,  improved calibration, and implications

Elemental ratio measurements of organic compounds using aerosol mass spectrometry: characterization, improved calibration, and implications

... data analysis proce- dures have been described in detail in previous publications (Canagaratna et ...W) with differing spectral ...The resolution of this mode (resolving power of ∼ ... See full document

20

Technical Note: Molecular characterization of aerosol-derived water soluble organic carbon using ultrahigh resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

Technical Note: Molecular characterization of aerosol-derived water soluble organic carbon using ultrahigh resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry

... relevance of aerosol- derived water-soluble organic carbon (WSOC) to climate and biogeochemical cycling, characterization of aerosol WSOC has been ...Electrospray ionization ... See full document

13

Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry

Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry

... 90%) of submicron aerosols worldwide and a full under- standing of their sources, atmospheric processing, and prop- erties is important to assess their impacts on climate, human health, and visibility ... See full document

17

Detection of SPM-1-Producing Pseudomonas aeruginosa and Class D beta-Lactamase-Producing Acinetobacter baumannii Isolates by Use of Liquid Chromatography-Mass Spectrometry and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry

Detection of SPM-1-Producing Pseudomonas aeruginosa and Class D beta-Lactamase-Producing Acinetobacter baumannii Isolates by Use of Liquid Chromatography-Mass Spectrometry and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry

... 6.8) with or without serial dilu- tions of ertapenem ...periods of 2 and 4 ...aliquots of each sample were overlaid with 1 ␮l of ␣-cyano-4-hydroxycinnamic acid matrix solution ... See full document

4

Rev. bras. farmacogn.  vol.23 número4

Rev. bras. farmacogn. vol.23 número4

... yields of natural products such as quinones (Pires et ...reactions with CYP450 enzymes and in vivo analysis conirm the presence of the obtained putative metabolites and validate the ... See full document

9

J. Braz. Chem. Soc.  vol.14 número3

J. Braz. Chem. Soc. vol.14 número3

... aroma. High resolution gas chromatography-olfactometry-mass spectrometry and aroma extract dilution analysis identified the most potent substances in its aroma as ethyl butanoate ... See full document

4

A time-of-flight mass spectrometer for high energy (0.5 - 1.0 keV) electron ionization of gases.

A time-of-flight mass spectrometer for high energy (0.5 - 1.0 keV) electron ionization of gases.

... obtendo-se desta forma, a cada pulso, uma base temporal para a medida dos tempos de vôo, com o emprego de um Conversor Tempo-Amplitude (Time to Amplitude Converter - TAC). Em outras palavras, a geração do pulso de ... See full document

5

J. Braz. Chem. Soc.  vol.24 número6

J. Braz. Chem. Soc. vol.24 número6

... Aliquots of 100 µL of sample (diesel, soybean oil, biodiesel, and diesel/biodiesel, diesel/soybean oil and biodiesel/soybean oil blends) were transferred to a flask containing 900 µL of a ... See full document

7

Analysis of acylcarnitine profiles in umbilical cord blood and during the early neonatal period by electrospray ionization tandem mass spectrometry

Analysis of acylcarnitine profiles in umbilical cord blood and during the early neonatal period by electrospray ionization tandem mass spectrometry

... electrospray ionization tandem mass spectrometry (ESI-MS/MS) is a potent tool for the diagnosis and screening of fatty acid oxidation and organic acid ...(DBS) of umbilical cord ... See full document

12

Evaluation of MALDI-TOF MS in the microbiology laboratory

Evaluation of MALDI-TOF MS in the microbiology laboratory

... not included in the database. When the sample spectra is acquired by the system but not recognized by the database, it is possible to include its spectra into the individual database (library), but the operator must be ... See full document

7

J. Bras. Patol. Med. Lab.  vol.49 número4

J. Bras. Patol. Med. Lab. vol.49 número4

... tests of choice for performing microbiological analysis in most clinical laboratories ...case of fastidious microorganisms (3) , hence the need for faster and ... See full document

4

High Resolution Mass Spectrometry Elucidation of Captopril’s Ozonation and Chlorination By-Products

High Resolution Mass Spectrometry Elucidation of Captopril’s Ozonation and Chlorination By-Products

... degradation of the captopril in aqueous solution after ozonation and ...identification, mass spectrometry and elucidation of its by-pro- ducts by applying direct infusion and high ... See full document

17

J. Braz. Chem. Soc.  vol.28 número2

J. Braz. Chem. Soc. vol.28 número2

... extracted with 2 mL of ACN, by vortexing (Quimis) for 30 s and centrifugation (Heraeus Multifuge 3L-R centrifuge, Thermo Scientific) at 13800 × g, for 5 min at 5 ...tube of 50 mL containing ... See full document

7

J. Braz. Chem. Soc.  vol.25 número7

J. Braz. Chem. Soc. vol.25 número7

... surface of both convex and flat sides of the coffee bean were analyzed by DESI and ...a mass spectrum from the convex bean side using EASI-MS. The design of the EASI ion source used required ... See full document

8

J. Braz. Chem. Soc.  vol.26 número3

J. Braz. Chem. Soc. vol.26 número3

... characteristics of the technique, such as its analysis speed, low sample requirement and relative ease of use, make MALDI-TOF MS a promising approach for the identification of petroleum ... See full document

8

Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 2: Analysis of the biomass burning contribution and the modern carbon fraction

Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 2: Analysis of the biomass burning contribution and the modern carbon fraction

... Salcedo, D., Onasch, T. B., Dzepina, K., Canagaratna, M. R., Zhang, Q., Huffman, J. A., De- Carlo, P. F., Jayne, J. T., Mortimer, P., Worsnop, D. R., Kolb, C. E., Johnson, K. S., Zuberi, B., Marr, L. C., Volkamer, R., ... See full document

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