Development of Conductivity Cell and Suppressor for Capillary Column Ion Chromatography

모세관 컬럼 이온 크로마토그래피를 위한 Conductivity Cell과 Suppressor의 개발

  • Received : 1998.09.07
  • Published : 1999.04.25

Abstract

In this study, conductivity cell and suppressor for micro-column ion chromatography were developed to analyze ions in small columns of samples. With a capillary column, the flow rate of the mobile phase is so small (usually $5{\sim}20{\mu}L/min$) that the usual conductivity cell can not be used. Therefore, we developed a new type of conductivity cell and suppressor which have small inner volumes. The conductivity cell was made with two Pt hypodermic needles (i.d. 0.010 mm) which are slightly separated (about $2{\mu}m$), and the suppressor was made of Nafion tubings. When several anions(fluoride, nitrite, nitrate, chlorate) were analyzed using developed conductivity cell and suppressor, a good chromatogram was obtained.

Keywords

capillary column;ion chromatography;conductivity cell;suppressor

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Acknowledgement

Supported by : 한국과학재단