COMPARISON OF HPLC AND PT/ATD/GC APPLICATION ON DETERMINATION OF THIOLANE IN GROUNDWATER

Kim, Chang Gyun; Clarke, William Paul

Environmental Engineering Research 1999;4(2): 89-94.

Chang Gyun Kim¹^†, and William Paul Clarke²

¹Water Protection Research Team, Environment & Energy Research Division, Research Institute of Industrial Science & Technology, P.O. Box 135 Pohang, Kyungpook 790-600, Korea
²Department of Chemical Engineering, University of Queensland, Brisbane, Queensland, 4072, Australia

Corresponding Author: Chang Gyun Kim ,

Received: March 18, 1999; Accepted: May 18, 1999.

ABSTRACT

The best analytical method was determined by the comparison of their reproducibility, sensitivity, and time taken for quantification of thiolane in groundwater. Based on controls, the repeatability of thiolane was observed ranging from 1 to 20 ppm as reproducible as within approximately 0.5% error range (RSD), which indicates that 99.5% of repeatability can be obtained by employing HPLC. Conversely, the repeat¬ability for PT/ATD/GC was much lower, ranging from 7 to 50%. The time needed for quantification on chromatogram for HPLC and PT/ATD/GC was approximately 2 and 6 minutes, respectively. Furthermore, much shorter time was required for operating of HPLC at 5 minutes, while it was needed for 54 minutes 5 to run PT/ATD/GC. Quantification of thiolane was not significantly affected by the presence of the sulfolane dominantly found in the site ranging from 100 to 4000 ppm. These results provide a data in order to choose a major analytical method for quantification of thiolane and should be considered when contemplating further study on its fate in the aquifer.

Keywords: groundwater contamination | thiolane | analysis