The Atomic Absorption Spectrophotometric Determination of Arsenic and Selenium in Premixed Inert Gas(Entrained Air)-Hydrogen Flames with a "Multi-flame" Burner

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概要

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• The determination of arsenic and selenium by atomic absorption spectropho tome try was established in premixed inert gas (entrained air)-hydrogen flames using a "multi-flame" burner. Arsenic and selenium electrodeless discharge lamps were used as the sources of radiation. The optimum operating conditions for the atomic absorption measurements for arsenic and selenium at 193.7 and 196.1 nm respectively were investigated. Under the optimum conditions, the sensitivities for 1% absorption were 0.17 and 0.15 ppm for arsenic and selenium respectively. Many other elements and acids interfered with the determination of arsenic and selenium in these low-temperature flames. Most of the interferences were found to be completely eliminated, in appearance, by adding a large amount (2000 ppm) of tin(II) chloride to the sample solutions. Furthermore, a gas-sampling technique for arsenic was studied in order to improve the arsenic sensitivity and in order to eliminate the interferences from other elements. The present method was applied to the determination of arsenic in sulfide ores and steels with satisfactory results.

• 公益社団法人 日本化学会の論文

著者

• Nakahara Taketoshi

  Department Of Applied Chemistry College Of Engineering And Department Of Advanced Materials Science

• Musha Soichiro

  Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture

• Nishino Hirohito

  Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture

• Munemori Makoto

  Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture

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