chromaS : instrument caracteristics

ChromaS is an industrial GC with dual-flame photometric detector (FPD) :

• first hydrogen-rich flame to decompose VOC samples,
• second to reduce the sulfur compound to S2 species which produce a blue chemiluminescent emission in the visible light spectrum. The blue light emission is passed through a photomultiplier tube. The signal is further amplified by an electrometer.

H₂S/COS/MM/EM/SO₂/CS₂/DMS/DMDS can be analyzed in two main applications.
 

1. Application 1 : pack column, COS is very well separated from H₂S, DMDS is not analysed, SO₂ is separated, LDL: 1 ppb for combustion application in Refinery, Paper mills or unknown compounds.
2. Application 2 (free of COS): capillary column SO₂ is separated from H₂S , LDL: 10 ppb Waste Water Plant application similar to Medor

Chroma S can be used for expertise, because the detection system is only for compounds with –S- molecule and permits to perform continuous improvement on key parameters as cycle time, LDL, detection range, compound separation.
 

Related Download :

• Bulletin October 2009