Abstract
A gas chromatographic technique for the determination of free and bound sulfur dioxide in beer was developed. Bound SO2 was decomplexed in alkaline medium in the presence of mercuric chloride. Free SO2 evolved on acidification was quantified by gas chromatography with a flame photometric detector. Sodium bisulfite was used as an external standard. The method showed good correlation with both the distillation and colorimetric methods. Recovery of SO2 and reproducibility by this gas chromatographic technique were high. Because the procedure does not use pararosaniline dye, it is safer than the colorimetric method and is equally applicable to rapid analysis of SO2 in both pale and dark beer samples.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the American Society of Brewing Chemists
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
