AGILENT GAS CHROMATOGRAPHY
AND SULFUR-SELECTIVE DETECTION
ANALYSIS OF SULFUR COMPOUNDS
ACCORDING TO ASTM D5623
There are many ways to measure sulfur in petrochemical products. Each technique has its own
strengths. The new Agilent 8355 Sulfur Chemiluminescence Detector has been designed to fulfill
and exceed all testing requirements for sulfur, especially with its:
• Linear response
• Nonquenching performance
• Excellent LOD/LOQ
• Ease-of-use
• Uptime readiness
Gas chromatography with sulfur chemiluminescence detection (SCD) provides fast identification
and quantification of sulfur compounds in petroleum feeds and products. Examples include
sulfur compounds in monomers such as ethylene and propylene, in solvents such as paraffins,
benzene, toluene, and xylenes, and in fuels such as natural gas, LPG, gasoline, kerosene, jet,
and diesel.
Most sources of light hydrocarbons contain sulfur compounds. If these compounds are present in
elevated amounts, then serious problems could occur, such as corrosions and noxious off gassing.
These impurities can greatly affect the quality and value of the final product. Being able to test for
sulfur accurately, reliably, and at any given moment, is critical to the petrochemical industry.
The Agilent 7890B GC, with its integrated 8355 SCD, delivers sensitivity, selectivity, and linear
responses for low-level sulfur analysis to ASTM D5623 criteria, as this gasoline example shows.
GC Conditions SCD Conditions
Columns: Agilent J&W DB-Sulfur SCD Base: 250 °C
or DB-1 are suitable Furnace: 800 °C
Liner: Ultra Inert, low pressure drop, Air flow (oxidation): 60 mL/min
wool (p/n 5190–2295)
Oxygen flow (ozone gen): 40 mL/min
Inlet: 275 °C
H2 flow (oxidation/lower): 38 mL/min
Injection: Split 10:1, 1 µL injected
H2 flow (oxidation/upper): 8 mL/min
Flow rate: Constant flow, He carrier gas,
2.0 mL/min
Oven: 40 °C (1 min), ramp 10 °C/min
to 250 °C 8 min)
1. Ethanethiol 13. Dimethyl disulfide
2. Dimethyl sulfide 14. 2-methylthiophene
3. Carbon disulfide 15. 3-methylthiophene
5. 2-methyl -2-propanethiol 16. 3-chlorothiophene
6. 1-propanethiol 17. Diethyl disulfide
pA
17, 18 7. Ethylmethyl sulfide 18. 2-bromothiophene
700
8. 2-butanethiol 19. T-butyl disulfide
9. Thiophene 20. Thianaphthene
600 10. 2-methyl -1-propanethiol 21. 2-methylbenzothiophene
11. Diethyl sulfide 22. 3-methylbenzothiophene
500 12. 1-butanethiol 23. Phenyl sulfide
3
13 22
400 8 16
14 15
7 19
2
300 4 6 10 21
9 23
5
1
11, 12
200
20
100
5 10 15 20 25 min
This chromatogram demonstrates performance by showing 23 sulfur standards in isooctane detected at 1 ppm.
The Agilent 7890B GC and integral 8355 SCD delivers the ultimate in sulfur analysis with enhanced ‘walk-up’
readiness. By reimaging the entire analyzer from injection to detection, the Agilent 8355 SCD has set new levels
of expectation for sulfur chemiluminescence detectors.
For more information,
contact your Agilent Representative
at www.agilent.com/chem/contactus
or learn more about the Agilent 8355 SCD
at www.agilent.com/chem/SCD Agilent Products are for Research Use Only.
Not for use in diagnostic procedures.
Information, descriptions and specifications in this
publication are subject to change without notice.
© Agilent Technologies, Inc. 2015
Published in USA, September 8, 2015
5991-6199EN
