Analytical Sciences

Abstract − Analytical Sciences, 19(3), 447 (2003).

Determination of Inorganic Anions in Natural Water by Microcolumn Ion Chromatography with On-column Enrichment
Lee Wah LIM,* Ji-Ye JIN,** and Toyohide TAKEUCHI* 
*Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
**Instrumental Analysis Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
An on-column enrichment method was developed for the rapid determination of inorganic anions in natural water. The system was assembled from a syringe pump, a six-port switching valve with a sample-enrichment loop, a separation column and a UV detector. The enrichment efficiency of the system was tested by using inorganic anions as samples. The limits of detection were between 0.6 and 7.7 ug/L. The system was applied to the determination of anions in river and pond-water samples.