Use of a direct current glow discharge mass spectrometer for the chemical characterization of samples of nuclear concern

1996 ◽  
Vol 11 (9) ◽  
pp. 855 ◽  
Author(s):  
Maria Betti
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Direct Current ◽  
Chemical Characterization

Characterization of a simple glow discharge coupled to a time of flight mass spectrometer for in-depth profile analysis

2002 ◽  
Vol 17 (9) ◽  
pp. 1126-1131 ◽  
Author(s):  
Jorge Pisonero ◽  
José Manuel Costa ◽  
Rosario Pereiro ◽  
Nerea Bordel ◽  
Alfredo Sanz-Medel
Keyword(s):  
Glow Discharge ◽  
Mass Spectrometer ◽  
Depth Profile ◽  
Profile Analysis ◽  
Time Of Flight ◽  
Depth Profile Analysis ◽  
Flight Mass Spectrometer

Characterization of Tantalum Films on Analytical Surfaces: Insights into Sputtering of Nonconductors in a Direct-Current Glow Discharge Using Secondary Cathodes

1999 ◽  
Vol 53 (3) ◽  
pp. 266-277 ◽  
Author(s):  
David M. Wayne ◽  
Roland K. Schulze ◽  
Carl Maggiore ◽  
D. Wayne Cooke ◽  
George Havrilla
Keyword(s):  
Glow Discharge ◽  
Direct Current ◽  
Tantalum Films

scholarly journals Real time chemical characterization of local and regional nitrate aerosols

2009 ◽  
Vol 9 (11) ◽  
pp. 3709-3720 ◽  
Author(s):  
M. Dall'Osto ◽  
R. M. Harrison ◽  
H. Coe ◽  
P. I. Williams ◽  
J. D. Allan
Keyword(s):  
Organic Carbon ◽  
Mass Spectrometer ◽  
Western Europe ◽  
Time Of Flight ◽  
Chemical Characterization ◽  
Aerosol Mass Spectrometer ◽  
Aerosol Mass ◽  
Neural Network Algorithm ◽  
Pm2.5 And Pm10

Abstract. Nitrate aerosols make a very major contribution to PM2.5 and PM10 in western Europe, but their sources and pathways have not been fully elucidated. An Aerosol Time-of-Flight Mass Spectrometer (ATOFMS) and a Compact Time of Flight Aerosol Mass Spectrometer (C-ToF-AMS) were deployed in an urban background location in London, UK, collecting data as part of the REPARTEE-I experiment. During REPARTEE-I, daily PM10 concentrations ranged up to 43.6 μg m−3, with hourly nitrate concentrations (measured by AMS) of up to 5.3 μg m−3. The application of the ART-2a neural network algorithm to the ATOFMS data characterised the nitrate particles as occurring in two distinct clusters (i.e. particle types). The first (33.6% of particles by number) appeared to be locally produced in urban locations during nighttime, whilst the second (22.8% of particles by number) was regionally transported from continental Europe. Nitrate in locally produced aerosol was present mainly in particles smaller than 300 nm, whilst the regional nitrate presented a coarser mode, peaking at 600 nm. In both aerosol types, nitrate was found to be internally mixed with sulphate, ammonium, elemental and organic carbon. Nitrate in regional aerosol appeared to be more volatile than that locally formed. During daytime, a core of the regionally transported nitrate aerosol particle type composed of organic carbon and sulphate was detected.

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