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Analysis of CS2 in Naphtha using GC-PFPD & GC-MS detection


A new application note highlights two detection approaches for the analysis of CS2 in naphtha: GC-MS & GC-PFP detection. 

GC-MS Configuration
The GC-MS application is equipped with an Agilent 8890 Gas Chromatograph (GC) containing a split/splitless inlet, a capillary column and a quadropole Agilent 5977B mass spectrometry (MS) detector with a stainless steel ion source and turbo pump. The mass spectrometer runs continuously in SIM and SCAN mode due to the incomplete separation of the CS2 from the Naphtha. The SIM ion data is used for the quantitative measurement of the CS2 and the scan mode is used for the total ion chromatogram (TIC) data to identify species.
 
GC-PFPD Configuration
The GC-PFPD application uses an Agilent 8890 GC in combination with an OI Model 5383 Pulsed Flame Photometric Detector (PFPD). The GC-PFPD is equipped with split/splitless inlet and a capillary column. The PFPD detector is a Sulphur selective detector and therefore only the Sulphur containing compounds show a positive peak.
 
Analysis Results
The analysis results of the GC-MS and GC-PFPD applications demonstrate that both detection techniques can be applied for the quantitative determination of CS2 in Naphtha. The GC-PFPD application uses a robust and straightforward pulsed flame photometric detector, that measures sulfur compounds at a sub-ppm level. The GC-MS application uses a mass spectrometry detector with stainless steel ion source, this entry level MS instrument detects the sulfur compounds at a ppb level. The universal MS detector requires a significant investment, but it can be used for various applications in a laboratory.
 

More information

Download the application note or contact us for more information.

 
 

 

 

 

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