Determination of 2,4-D amine in soils using anion exchange membranes
Szmigielska, A.M. and J. J. Schoenau . 1995. American Chemical Society 43: 151-156
Abstract
A new method for the quantitative
determination of 2,4-D in soils by use of anion exchange
membranes with GC detection was developed.
Preliminary investigation of ion exchange properties of
pure 2,4-D acid on the membranes revealed that when a
suitable solvent system is used, a quantitative recovery
of 2,4-D acid can be achieved. Linear relationships
between 2,4-D acid removed by the membrane and 2,4-D
concentration in solutions and soils were obtained within
the range tested. The developed method was
successfully applied for the determination of 2,4-D amine
from a commercial formulation applied to soil
surfaces. The method was tested in two
concentration ranges representing a typical farm-spraying
application rate and a spill. The relationship
between the amount of 2,4-D amine detected by membranes
and the spike level on the soil surface was linear for
both concentration ranges. The applicability of the
method was examined for a degradation study of 2,4-D
amine after a spill. The low detection limit and
the simplicity of the procedure makes this method very
suitable for 2,4-D determination in soils.
Key Words
2,4-D, anion exchange membranes, soil surfaces
