Soil carbon content and character in an old-growth forest in northwestern Pennsylvania: a case study introducing pyrolysis molecular beam mass spectrometry (py-MBMS)

2002 ◽  
Vol 116 ◽  
pp. S269-S275 ◽  
Author(s):  
C.M Hoover ◽  
K.A Magrini ◽  
R.J Evans
Keyword(s):  
Mass Spectrometry ◽  
Carbon Content ◽  
Soil Carbon ◽  
Molecular Beam ◽  
Old Growth ◽  
Molecular Beam Mass Spectrometry ◽  
Soil Carbon Content ◽  
Old Growth Forest

Using Molecular-Beam Mass Spectrometry to Study the Pecvd of Diamondlike Carbon Films

1993 ◽  
Vol 334 ◽  
Author(s):  
I.B. Graff ◽  
R.A. Pugliese ◽  
P.R. Westmoreland
Keyword(s):  
Mass Spectrometry ◽  
Vapor Deposition ◽  
Molecular Beam ◽  
Film Growth ◽  
Chemical Vapor ◽  
Carbon Films ◽  
Total Flow ◽  
Measured Concentration ◽  
Molecular Beam Mass Spectrometry ◽  
Diamondlike Carbon

AbstractMolecular-beam mass spectrometry has been used to study plasma-enhanced chemical vapor deposition (PECVD) of diamondlike carbon films. A threshold-ionization technique was used to identify and quantify species in the plasma. Mole fractions of H, H2, CH4, C2H2, C2H6 and Ar were measured in an 83.3% CH4/Ar mixture at a pressure of 0.1 torr and a total flow of 30 sccm. Comparisons were made between mole fractions measured at plasma powers of 25W and 50W. These results were compared to measured concentration profiles and to film growth rates.

Estimation of Soil Degradation Rate Constants from Vertical Distribution of Soil Carbon Content

2003 ◽  
Vol 36 (4) ◽  
pp. 428-434
Author(s):  
Takuya Kawanishi ◽  
Hiroyuki Amano ◽  
Eriko Masani ◽  
Yoshishige Hayashi ◽  
Naoto Kamata ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Carbon Content ◽  
Soil Carbon ◽  
Rate Constants ◽  
Soil Degradation ◽  
Degradation Rate ◽  
Soil Carbon Content
Sign in / Sign up

Export Citation Format

Share Document