Precise determination of manganese in steel by dc glow discharge optical emission spectrometry associated with voltage modulation technique

Kazuaki Wagatsuma, Kenji Kodama, Hyunkook Park

研究成果: Article査読

16 被引用数 (Scopus)

抄録

A voltage modulation technique was applied for the precise and accurate determination of manganese in steels in dc glow discharge optical emission spectrometry. Emission signals from the glow discharge plasma are modulated by a cyclic variation of the discharge voltage so that only the desired signals can be detected at very low noise levels by using a lock-in amplifier. Mn determination in low-alloyed steels was performed to estimate the repeatability of the analytical result. For each measurement, the relative standard deviation (R.S.D.) of the intensities of the Mn I 403.08-nm line was ca 0.1% when a steel sample containing 0.329mass% Mn was employed. Averaging all analytical values, which are obtained in various discharge conditions, yields statistical information on the precision and accuracy of the analytical values obtained. The relative error from the recommended value is calculated to be 0.5%. The R.S.D. over the analytical values is 1.5%, representing the overall analytical performance of this technique.

本文言語English
ページ(範囲)257-263
ページ数7
ジャーナルAnalytica Chimica Acta
502
2
DOI
出版ステータスPublished - 2004 1 30

ASJC Scopus subject areas

  • 分析化学
  • 生化学
  • 環境化学
  • 分光学

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