Method Siloxanes

Siloxanes from Landfill Gas


This method is for the determination of siloxanes from landfill gas.  The sample is on an XAD-2 using a flow rate of 250 mL/min. for 40 minutes for a 10L total sample volume.  After sample collection, the siloxanes are thermally purged from the tube and analyzed by GC/MS.

 


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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   None specified.
Preservatives:   None specified.
Required Preps:   XAD-2 tube, 400/200mg (SKC 226-30-06)
Collection Method:   250 mL/min. for 40 minutes
Analytical Methodology:   GC/MS
Documentation:  

Analyte List*

Analyte Formula CAS Number Detection Limit
Hexamethyldisiloxane (L2)
C6H18OSi2
107-46-0
1
 µg
Octamethyltrisiloxane (L3)
C8H24O2Si3
107-51-7
1
 µg
Decamethyltetrasiloxane (L4)
C10H30O3Si4
141-62-8
1
 µg
Hexamethylcyclotrisiloxane (D3)
C6H18O3Si3
541-05-9
1
 µg
Octamethylcyclotetrasiloxane (D4)
C8H24O4Si4
556-67-2
1
 µg
Decamethylcyclopentasiloxane (D5)
C10H30O5Si5
541-02-6
1
 µg

* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.