Micro-hollow glow discharge analysis of carbonaceous materials

Chethan K. Gaddam, Randy Lee Vander Wal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Combustion produced soot can vary widely in composition, in particular C/H ratio, reflecting both its molecular origins and temperature of evolution. In this study the main objective was to develop and demonstrate a micro-hollow glow discharge analyzer coupled to a miniature spectrometer for a variety of carbonaceous materials. Traditional sputtering capability of the glow discharge has been utilized for both atomizing and electronically exciting the samples for stand-alone analytical analysis. Analyzed samples included flame and diesel soot, biochars and a carbon black. Demonstrating versatility for chemistry analysis, the plasma detector could distinguish carbonaceous materials with different C/H ratios and recognize heteroelements, inorganics and metal elements from carbonaceous materials. For some operational regimes and species, emission from OH (A2+-X2∏), CH (A2Δ-X2∏), and often C2 (d3g-a3u; Swan band system) diatomic radicals is produced. Moreover the inherent oxygen content nascent to the carbonaceous material can be quantitatively estimated without any heat treatment, besides having the light element detection capability, in particular hydrogen.

Original languageEnglish (US)
Title of host publication8th US National Combustion Meeting 2013
PublisherWestern States Section/Combustion Institute
Pages3247-3254
Number of pages8
Volume4
ISBN (Electronic)9781627488426
StatePublished - 2013
Event8th US National Combustion Meeting 2013 - Park City, United States
Duration: May 19 2013May 22 2013

Other

Other8th US National Combustion Meeting 2013
CountryUnited States
CityPark City
Period5/19/135/22/13

Fingerprint

carbonaceous materials
Glow discharges
Soot
glow discharges
hollow
soot
Chemical elements
Swan bands
light elements
atomizing
versatility
Carbon black
Sputtering
Spectrometers
Hydrogen
flames
analyzers
heat treatment
sputtering
Metals

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Gaddam, C. K., & Vander Wal, R. L. (2013). Micro-hollow glow discharge analysis of carbonaceous materials. In 8th US National Combustion Meeting 2013 (Vol. 4, pp. 3247-3254). Western States Section/Combustion Institute.
Gaddam, Chethan K. ; Vander Wal, Randy Lee. / Micro-hollow glow discharge analysis of carbonaceous materials. 8th US National Combustion Meeting 2013. Vol. 4 Western States Section/Combustion Institute, 2013. pp. 3247-3254
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Gaddam, CK & Vander Wal, RL 2013, Micro-hollow glow discharge analysis of carbonaceous materials. in 8th US National Combustion Meeting 2013. vol. 4, Western States Section/Combustion Institute, pp. 3247-3254, 8th US National Combustion Meeting 2013, Park City, United States, 5/19/13.

Micro-hollow glow discharge analysis of carbonaceous materials. / Gaddam, Chethan K.; Vander Wal, Randy Lee.

8th US National Combustion Meeting 2013. Vol. 4 Western States Section/Combustion Institute, 2013. p. 3247-3254.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Gaddam CK, Vander Wal RL. Micro-hollow glow discharge analysis of carbonaceous materials. In 8th US National Combustion Meeting 2013. Vol. 4. Western States Section/Combustion Institute. 2013. p. 3247-3254