Analysis of Trace Thiophene in Benzene According to ASTM D7011 Using Nexis™ SCD-2030

Introduction

Thiophene and other sulfur compounds are known for generating sulfur oxide upon combustion and also known as poisons in catalyst. For this reason, the quality control of petroleum products requires high-sensitivity analysis of sulfur compounds. In Application News No. G291, we introduced an analysis that employs gas chromatography using a Flame Photometric Detector (FPD). ASTM D7011 introduces a method for analyzing trace thiophene in benzene by Sulfur Chemiluminescence Detector (SCD) at a level of approximately 0.03 mg/kg which is lower than what is conventionally analyzed with FPD. The Nexis SCD-2030 next-generation sulfur chemiluminescence detection system with its best-in-class sensitivity and stability is capable of selectively detecting sulfur compound types with high sensitivity. This article shows an example of the analysis of thiophene in benzene at high sensitivity in conformance with ASTM D7011 and using the Nexis SCD-2030.

June 25, 2023 GMT