LIF measurements of atomic arsenic in hydrogen and methane diffusion flames

Yanda Zhang, Youngbin Yoon, Peter B. Kelly, Ian M. Kennedy

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Laser-induced fluorescence (LIF) was used to detect atomic arsenic in hydrogen and methane diffusion flames. Elemental arsenic was excited at 197.2 nm (4p)3 4S3/2→(4p)2 (5s) 4P1/2 by mixing the fourth harmonic of a YAG laser (266 nm) and a dye laser (760 nm). The fluorescence was detected at 249.3 nm (4p)2 (5s) 4P1/2→(4p)3 2D3/2. In nitrogen-diluted methane flames, arsenic LIF was contaminated by fluorescence from polyaromatic hydrocarbons. Atomic arsenic was mainly found in the low-temperature, fuel-rich region and was quickly oxidized at high temperatures under both fuel-rich and fuel-lean conditions. The results were consistent with equilibrium calculations.

Original languageEnglish (US)
Pages (from-to)1777-1783
Number of pages7
JournalSymposium (International) on Combustion
Volume2
StatePublished - 1998

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Mechanical Engineering

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    Zhang, Y., Yoon, Y., Kelly, P. B., & Kennedy, I. M. (1998). LIF measurements of atomic arsenic in hydrogen and methane diffusion flames. Symposium (International) on Combustion, 2, 1777-1783.