L1 /
5
CH3041
SOLIDS EXTRACTION
Soil and sediments are
usually put through a solvent extraction. They are washed with
a polar organic solvent such as DCM to extract
organic material. A phase 1 D A phase 2
A partition coefficient K = [A2] / [A1] governs
the amounts of analyte in each partition.
the amounts of analyte in each partition.
• Use of a polar organic solvent favours transfer
of an organic analyte from the solid phase to the liquid.
• Plant samples
are often extracted in a similar fashion after the plant has
been
physically broken down in a macerator.
physically broken down in a macerator.
