Analysis of Thiophene in Benzene: Comparison of FPD(S) and SCD Analyses

Introduction

The detectors chosen for trace analysis of sulfur compounds using gas chromatography are Flame Photometric Detector (FPD(S)) and Sulfur Chemiluminescence Detector (SCD) which offer highly sensitive and selective detection. These detectors have different detection characteristics for sulfur compounds because of their difference in the principles of detection. Therefore, looking at methods for analyzing thiophene in benzene, FPD is used in ASTM D4735 and SCD is used in D7011, but these methods analyze different concentration ranges of thiophene. In this article, we measured results with FPD and SCD, and compared them to Flame Ionization Detector (FID), which is a general-purpose detector, through the analysis of thiophene in benzene as an example and described the differences between FPD and SCD.

June 25, 2023 GMT