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Abstract

A fast and reliable analytical technique for the determination of total sulfur levels in complex hydrocarbon matrices is introduced. The method employed flow injection technique using a gas chromatograph as a sample introduction device and a gas phase dual-plasma sulfur chemiluminescence detector for sulfur quantification. Using the technique described, total sulfur measurement in challenging hydrocarbon matrices can be achieved in less than 10 s with sample-to-sample time <2 min. The high degree of selectivity and sensitivity toward sulfur compounds of the detector offers the ability to measure low sulfur levels with a detection limit in the range of 20 ppb w/w S. The equimolar response characteristic of the detector allows the quantitation of unknown sulfur compounds and simplifies the calibration process. Response is linear over a concentration range of five orders of magnitude, with a high degree of repeatability. The detector's lack of response to hydrocarbons enables direct analysis without the need for time-consuming sample preparation and chromatographic separation processes. This flow injection-based sulfur chemiluminescence detection technique is ideal for fast analysis or trace sulfur analysis.

Item Type:	Article
Authors/Creators:	Hua, Y and Hawryluk, M and Gras, R and Shearer, R and Luong, J
Journal or Publication Title:	Journal of Separation Science
Publisher:	Wiley
ISSN:	1615-9306
DOI / ID Number:	https://doi.org/10.1002/jssc.201700897
Copyright Information:	Copyright 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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