Journal Published Online: 08 June 2005
Volume 2, Issue 7

DP-SCD and LTMGC for Determination of Low Sulfur Levels in Hydrocarbons

CODEN: JAIOAD

Abstract

A novel measurement technique has been developed for the rapid determination of low levels of sulfur in hydrocarbon matrices. The technique employs low thermal mass gas chromatography (LTMGC) and a dual plasma sulfur chemiluminescence detector (DP-SCD). Highly sensitive total volatile sulfur measurement can be made in less than 30 s with detection limits in the 20–30 parts per billion range. Response is linear over at least three orders of magnitude sulfur with excellent repeatability. By taking advantage of LTMGC's rapid temperature programming and cool down time, it is also possible to measure individual sulfur species, analogous to ASTM D 5623. Conditions have also been developed using the same analytical apparatus to detect the major elemental sulfur allotropes (S2, S3, S6, S7, and S8) in gasoline at levels that can cause silver corrosion.

Author Information

Gras, RL
Dow Chemical, Fort Saskatchewan, Alberta, Canada
Luong, JC
Dow Chemical, Fort Saskatchewan, Alberta, Canada
Mustacich, RV
RVM Scientific, Santa Barbara, CA, USA
Shearer, RL
Ionics Instruments, Boulder, CO, USA
Pages: 15
Price: $25.00
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Details
Stock #: JAI13090
ISSN: 1546-962X
DOI: 10.1520/JAI13090