Letter: A method for the chromatic aberration correction of a laser time of-flight mass analyzer

2016 ◽  
Vol 22 (3) ◽  
pp. 141
Author(s):  
Elizaveta Sysoeva ◽  
Alexander Sysoev
Keyword(s):  
Time Of Flight ◽  
Chromatic Aberration ◽  
Mass Analyzer ◽  
Aberration Correction

scholarly journals Determination of N-Nitrosamines by Gas Chromatography Coupled to Quadrupole–Time-of-Flight Mass Spectrometry in Water Samples

Separations ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 3 ◽  
Author(s):  
Benigno José Sieira ◽  
Inmaculada Carpinteiro ◽  
Rosario Rodil ◽  
José Benito Quintana ◽  
Rafael Cela
Keyword(s):  
Mass Spectrometry ◽  
Environmental Protection Agency ◽  
Ion Trap ◽  
Solid Phase ◽  
Classical Method ◽  
Tap Water ◽  
Time Of Flight ◽  
The United States ◽  
Mass Analyzer

An analytical method based on high-resolution quadrupole–time-of-flight (QToF) mass spectrometry has been developed as an alternative to the classical method, using a low-resolution ion trap (IT) analyzer to reduce interferences in N-nitrosamines determination. Extraction of the targeted compounds was performed by solid-phase extraction (SPE) following the United States Environmental Protection Agency (USEPA) -521 method. First, both electron impact (EI) and positive chemical ionization (PCI) using methane as ionization gas were compared, along with IT and QToF detection. Then, parameters such as limits of detection (LOD) and quantification (LOQ), linearity, and repeatability were assessed. The results showed that the QToF mass analyzer combined with PCI was the best system for the determination of the N-nitrosamines, with instrumental LOD and LOQ in the ranges of 0.2–4 and 0.6–11 ng mL−1, respectively, which translated into method LOD and LOQ in the ranges of 0.2–1.3 and 0.6–3.9 ng L−1, respectively. The analysis of real samples showed the presence of 6 of the N-nitrosamines in influent, effluent, and tap water. N-nitrosodimethylamine (NDMA) was quantified in all the analyzed samples at concentrations between 1 and 27 ng L−1. Moreover, four additional nitrosamines were found in tap and wastewater samples.

A linear time-of-flight mass analyzer for thermal ionization cavity mass spectrometry

2001 ◽  
Vol 56 (7) ◽  
pp. 1175-1194 ◽  
Author(s):  
David M. Wayne ◽  
Wei Hang ◽  
Diane K. McDaniel ◽  
Robert E. Fields ◽  
Eddie Rios ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Linear Time ◽  
Time Of Flight ◽  
Thermal Ionization ◽  
Mass Analyzer

Chromatic Aberration Correction for Atomic Resolution TEM Imaging from 20 to 80 kV

2016 ◽  
Vol 117 (7) ◽  
Author(s):  
Martin Linck ◽  
Peter Hartel ◽  
Stephan Uhlemann ◽  
Frank Kahl ◽  
Heiko Müller ◽  
...  
Keyword(s):  
Chromatic Aberration ◽  
Atomic Resolution ◽  
Aberration Correction

X‐Ray Topography with Chromatic‐Aberration Correction

1971 ◽  
Vol 42 (12) ◽  
pp. 4731-4735 ◽  
Author(s):  
Jun‐ichi Chikawa ◽  
Isao Fujimoto ◽  
Yuhko Asaeda
Keyword(s):  
Chromatic Aberration ◽  
Aberration Correction ◽  
X Ray
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