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EC number: 200-087-7
CAS number: 51-28-5
Data have been obtained from secondary source.
Values of Koc, measured or estimated , from different types of soil are available.
Measured Koc for 2,4-dinitrophenol in alluvial sandy loam (7.8% clay, 30% silt, 62.2% sand, 1.1% organic matter, pH 8.1): 13.5
Measured Koc of 2,4-Dinitrophenol: 16.6
Soil Adsorption Coefficient estimated by KOCWIN v2.00 showed an Koc 460.8 L/kg (MCI method) and a Koc 284.3 L/kg (Kow method).
These Koc values suggest that 2,4-dinitrophenol is expected to have very high mobility in soil.
The partitioning of dinitrophenols from
water to suspended solids and sediment due to adsorption would transport
these compounds from water to sediment.
The sorption and subsequent transport of
dinitrophenols from water to suspended solids and sediment would be
significant in natural waters that are acidic and/or have high organic
matter and clay content. In a study of Kaufman (1976) and Callahan et
al., (1979) it has been studied that the sorption of dinitrophenols by
soil or sediment would depend on the organic carbon content, clay
content, and pH of soil and sediment. An increase in clay and organic
carbon content and a decrease in pH (thereby increasing the
concentration of the un-ionized form) would increase the amount sorbed.
The transport of dinitrophenols from soil
to groundwater also may occur via leaching. The amount of DNP leached
depends on the dinitrophenol adsorption capability of soils. Adsorption
of phenols in soil increases with a decrease in pH and an increase in
organic carbon, goethite (one of the most common iron oxides in soil),
and clay content (Hudson-Baruth and Seitz 1986; Kaufman 1976; O’Connor
et al. 1990; Shea et al. 1983; Stone et al. 1993).
The adsorption of 2,4-DNP in calcareous
soils low in organic carbon, goethite and clay content, was low at a pH
In soils containing goethite, 2,4-DNP
adsorption is due to surface complex formation at protonated mineral
surfaces. The adsorption of 2,4-DNP on goethite was shown to be maximum
near pH 4.5 and negligible at neutral and alkaline pH (Hudson-Baruth and
Seitz 1986; O’Connor et al. 1990).
The measured Koc for 2,4-dinitrophenol was
13.5 in alluvial sandy loam (7.8% clay, 30% silt, 62.2% sand, 1.1%
organic matter, pH 8.1) (Martins JM, Mermoud A: J Contam Hydrol, 1998).
In a study of Chu W, Chen K-H 2000, Koc of
2,4-Dinitrophenol 16.6 was measured.
Koc values suggest that 2,4-dinitrophenol
is expected to have very high mobility in soil (Martins JM, Mermoud A: J
Contam Hydrol, 1998)
Soil Adsorption Coefficient estimated by
KOCWIN v2.00 showed an Koc 460.8 L/kg (MCI method) and a Koc 284.3 L/kg
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