Analysis of Volatile Trace Sulfur Compounds in Water with GC-SCD by Direct Aqueous Injection

Abstract

A method of direct aqueous injection analysis of volatile trace sulfur compounds in waste or contaminated water is reported. The detection limits of H₂S, COS, and several mercaptans range from several ng/mL to several tens of ng/mL. The method precision is approximately 10%. Contamination problems, standard curve preparation, injection volume and several problems related to the method development and sample analysis are also addressed in this paper.

Key Words:

• Volatile trace sulfur compounds
• GC
• sulfur chemiluminescence detector
• direct aqueous injector