Development of open-air type electrolyte-as-cathode glow discharge-atomic emission spectrometry for determination of trace metals in water

Hyo J. Kim, Jeong H. Lee, Myung Y. Kim, T. Cserfalvi, P. Mezei

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Abstract

The open-air type electrolyte cathode atomic glow discharge (ELCAD) has been developed and studied for fundamental and analytical applications for determination of trace heavy metals in water. The normal closed-type discharge cell shows some problems such as unstable plasma due to changes in the pressure inside the cell during the discharge, and water vapor condensing onto the window. Applying approximately 1500 V to the several-millimeter gap between the electrolyte solution cathode and a Pt rod anode in atmospheric air pressure produced a stable plasma and significantly improved sensitivity. The emission spectrum of de-ionized water containing 100 mg/l Cu was measured and some emission lines were found from Cu I (324.7 nm, 327.4 nm and 510.5 nm) and Cu II (224.7 nm and 229.4 nm). The LODs of Cr, Cu, Fe, Mn, Ni, Pb, and Zn are in the ranges from 0.01 mg/l to 0.6 mg/l. The LODs of Cu, Mn, Pb and Zn improve by approximately one order of magnitude compared to the previous closed-type ELCAD.

Original languageEnglish
Pages (from-to)823-831
Number of pages9
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume55
Issue number7
Publication statusPublished - Jul 1 2000

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cathode glow
Glow discharges
glow discharges
Spectrometry
Electrolytes
Cathodes
cathodes
electrolytes
Water
metals
water
spectroscopy
Plasmas
condensing
Steam
heavy metals
Heavy Metals
cells
Water vapor
Heavy metals

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Development of open-air type electrolyte-as-cathode glow discharge-atomic emission spectrometry for determination of trace metals in water. / Kim, Hyo J.; Lee, Jeong H.; Kim, Myung Y.; Cserfalvi, T.; Mezei, P.

In: Spectrochimica Acta - Part B Atomic Spectroscopy, Vol. 55, No. 7, 01.07.2000, p. 823-831.

Research output: Contribution to journalArticle

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