IP 443: Extraction of the soluble organic fraction (SOF) of diesel particulates collected on filters - Soxhlet extraction method
- Method adopted/last revised: 1999
- Method reapproved: None
- REF/ISBN: IP443-2934869
- Status: Current
- First printed in STM books: January 1999
-
Scope
This standard describes a procedure for extracting the soluble organic
fraction from filters that have been used to collect the particulate emissions
from diesel engine exhausts.
NOTE 1 The extract can be used to produce a
solution of the soluble organic fraction for further analysis by gas
chromatography for the fuel- and lubricating oil-derived hydrocarbons in diesel
particulates as described in IP 442.
NOTE 2 A procedure for determining the SOF gravimetrically is described in annex A. The method is suitable for quantities in the sub-milligram to milligram range.
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