Investigation of adsorbed mercury distribution in silver coated filters by X-ray fluorescence

S. Kurunczi, S. Török, J. W. Beal

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have been working on mercury collection from flue gas by amalgamation and subsequent XRF analysis. Previous results showed unexpectedly high relative standard deviation (30.%) in collection efficiency when silver-coated filters were exposed to gas phase mercury in a pilot-scale test chamber. Filters were analyzed by micro-XRF, TXRF and conventional XRF to explore the source of scattering. It was concluded that mercury had inhomogeneously adsorbed in the filter as the cause of this variation, leading to a positive bias of ∼50% in efficiency value. Results reported in this paper suggest the TXRF method is accurate to within ±10% when X-ray counting statistics are not the limiting factor. Application of this filter in flue gas measurement will be presented.

Original languageEnglish
Article number400588
Pages (from-to)291-295
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume253
Issue number2
DOIs
Publication statusPublished - Jan 1 2002

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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