Results 51 to 60 of about 75,094 (189)

Characterization and Quantification of Isoprene-Derived Epoxydiols in Ambient Aerosol in the Southeastern United States [PDF]

open access: yes, 2010
Isoprene-derived epoxydiols (IEPOX) are identified in ambient aerosol samples for the first time, together with other previously identified isoprene tracers (i.e., 2-methyltetrols, 2-methylglyceric acid, C5-alkenetriols, and organosulfate derivatives of ...
Chan, Man Nin   +10 more
core   +2 more sources

Time-of-Flight Secondary Ion Mass Spectrometry Analyses of Self-Assembled Monolayers of Octadecyltrimethoxysilane on SiO2 Substrate

open access: yesApplied Sciences, 2022
The self-assembled monolayers (SAMs) of organosilanes formed on an oxide substrate are thought to have a polymerized –Si–O–Si– network due to the homocondensation of silanols of hydrolyzed silane headgroups, which is the most significant difference in ...
Heng-Yong Nie   +1 more
doaj   +1 more source

Enhancement of ion intensity in time-of-flight secondary-ionization mass spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 1996
Enhancement of ion intensity in static secondary-ionization mass spectrometry (SIMS) has been achieved by using a matrix-assisted sample preparation technique. Previous investigations of polymers and biomolecules by SIMS indicated that secondary-ion (SI) yield is dependent on substrate coverage.
Nicola, Anthony J.   +2 more
openaire   +2 more sources

Measurements of Isoprene-Derived Organosulfates in Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry - Part 1: Single Particle Atmospheric Observations in Atlanta [PDF]

open access: yes, 2011
Organosulfate species have recently been identified as a potentially significant class of secondary organic aerosol (SOA) species, yet little is known about their behavior in the atmosphere.
Ault, Andrew P.   +8 more
core   +1 more source

Fate of drugs during wastewater treatment [PDF]

open access: yes, 2013
This is the post-print version of the final paper published in TrAC Trends in Analytical Chemistry. The published article is available from the link below.
Andrási   +98 more
core   +2 more sources

Probing metal ion binding and conformational properties of the colicin E9 endonuclease by electrospray ionization time-of-flight mass spectrometry [PDF]

open access: yes, 2002
Nano-electrospray ionization time-of-flight mass spectrometry (ESI-MS) was used to study the conformational consequences of metal ion binding to the colicin E9 endonuclease (E9 DNase) by taking advantage of the unique capability of ESI-MS to allow ...
HECK, ALBERT J.R.   +6 more
core   +3 more sources

Electrospray propulsion time-of-flight secondary ion mass spectrometry diagnostic

open access: yesReview of Scientific Instruments
The design and capability of a novel electrospray propulsion time-of-flight secondary ion mass spectrometry (TOF-SIMS) diagnostic are presented to investigate secondary species emission from surface impingement of energetic molecular ion plumes. Designed on the basis of traditional SIMS principles, this diagnostic provides information on the relative ...
Giuliana C. Hofheins   +2 more
openaire   +2 more sources

Toward precision mass measurements of neutron-rich nuclei relevant to $r$-process nucleosynthesis

open access: yes, 2015
The open question of where, when, and how the heavy elements beyond iron enrich our Universe has triggered a new era in nuclear physics studies.\ Of all the relevant nuclear physics inputs, the mass of very neutron-rich nuclides is a key quantity for ...
Litvinov, Yu. A.   +3 more
core   +1 more source

Metal and metalloid foliar uptake by various plant species exposed to atmospheric industrial fallout: Mechanisms involved for lead [PDF]

open access: yes, 2012
Fine and ultrafine metallic particulatematters (PMs) are emitted frommetallurgic activities in peri-urban zones into the atmosphere and can be deposited in terrestrial ecosystems.
Castrec-Rouelle, Maryse   +7 more
core   +3 more sources

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