Efficiency of sample introduction into inductively coupled plasma by graphite furnace electrothermal vaporization

T. Kántor, Şeref Güçer

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A laboratory constructed graphite furnace electrothermal vaporizer (GF-ETV) was used for studying transport efficiencies. This device enables collection of the vaporization products that exit the central sampling hole of the horizontal graphite tube. For determination of the transport efficiency between the GF-ETV and the ICP-torch three methods were tested: (1) deposition of the aerosol particles and the vapour of certain elements by mixing the vaporization product with supersaturated steam and subsequent condensation (direct method); (2) dissolution of the deposited sample fraction from the interface components (indirect method); and (3) calculation from line intensities when applying GF-ETV and pneumatic nebulization sample introduction methods using mercury as a reference element. The latter, 'mercury reference method' required 100% transport efficiency for mercury with the ETV, which could be approximated with the use of argon as carrier gas (without halocarbon addition). With a 200 cm3/min flow rate of internal argon in the graphite tube, the transport efficiency was between 67 and 76% for medium volatility elements (Cu, Mn and Mg) and between 32 and 38% for volatile elements (Cd and Zn). By adding carbon tetrachloride vapour to the internal argon flow, the transport efficiency increased to 67-73% for the five elements studied.

Original languageEnglish
Pages (from-to)763-772
Number of pages10
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume54
Issue number5
DOIs
Publication statusPublished - May 10 1999

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Graphite
Inductively coupled plasma
Vaporization
vaporizers
furnaces
Furnaces
graphite
Argon
Mercury
argon
Vapors
Halocarbons
vapors
halocarbons
tubes
torches
Carbon tetrachloride
Carbon Tetrachloride
volatility
pneumatics

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Efficiency of sample introduction into inductively coupled plasma by graphite furnace electrothermal vaporization. / Kántor, T.; Güçer, Şeref.

In: Spectrochimica Acta - Part B Atomic Spectroscopy, Vol. 54, No. 5, 10.05.1999, p. 763-772.

Research output: Contribution to journalArticle

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