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פותח על ידי קלירמאש פתרונות בע"מ -
Reevaluation of partitioning as a mechanism of nonionic chemicals adsorption in soils
Year:
1983
Source of publication :
Journal of Environmental Quality
Authors :
גרסטל, זאב
;
.
מינגלגרין, אורי
;
.
Volume :
12
Co-Authors:
Mingelgrin, U., Div. Soil Residues Chem., Inst. Soils Water., Bet Dagan, Israel
Gerstl, Z., Div. Soil Residues Chem., Inst. Soils Water., Bet Dagan, Israel
Facilitators :
From page:
1
To page:
11
(
Total pages:
11
)
Abstract:
A critical evaluation of recent suggestions that the adsorption of nonionic organic compounds by soils can be well-correlated with the partition of the compounds between an aqueous and a nonpolar phase (usually 1-octanol), or with water solubility is presented. The physical basis proposed for these assumptions in that adsorption of nonionic organic compounds on soil organic matter is a 'partition' process between the aqueous phase and a hydrophobic surface phase. The evidence presented in the literature for the dominance of a partition mechanism is insufficient to prove its general applicability. For example, systems in which a distinct hydrophobic phase at the solid surface does not exist are shown to exhibit the uptake behavior presumed to characterize partition. Theoretically, as well as practically, surface uptake cannot be simply defined as 'adsorption' or 'partition', but rather there is a continuum of possible interactions starting with fixed site adsorption and ending with true partition between three-dimensional phases.A critical evaluation of recent suggestions that the adsorption of nonionic organic compounds by soils can be well-correlated with the partition of the compounds between an aqueous and a nonpolar phase (usually 1-octanol), or with water solubility is presented. The physical basis proposed for these assumptions is that adsorption of nonionic organic compounds on soil organic matter is a ″partition″ process between the aqueous phase and a hydrophobic surface phase. The evidence presented in the literature for the dominance of a partition mechanism is insufficient to prove its general applicability. Theoretically, as well as practically, surface uptake cannot be simply defined as ″adsorption″ or ″partition″ , but rather there is a continuum of possible interactions starting with fixed site adsorption and ending with true partition between three-dimensional phases.
Note:
Related Files :
Adsorption
ORGANIC COMPOUNDS - Adsorption
Organic matter
pesticide
soil
Soils
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
Language:
אנגלית
Editors' remarks:
ID:
32017
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:06
Scientific Publication
Reevaluation of partitioning as a mechanism of nonionic chemicals adsorption in soils
12
Mingelgrin, U., Div. Soil Residues Chem., Inst. Soils Water., Bet Dagan, Israel
Gerstl, Z., Div. Soil Residues Chem., Inst. Soils Water., Bet Dagan, Israel
Reevaluation of partitioning as a mechanism of nonionic chemicals adsorption in soils
A critical evaluation of recent suggestions that the adsorption of nonionic organic compounds by soils can be well-correlated with the partition of the compounds between an aqueous and a nonpolar phase (usually 1-octanol), or with water solubility is presented. The physical basis proposed for these assumptions in that adsorption of nonionic organic compounds on soil organic matter is a 'partition' process between the aqueous phase and a hydrophobic surface phase. The evidence presented in the literature for the dominance of a partition mechanism is insufficient to prove its general applicability. For example, systems in which a distinct hydrophobic phase at the solid surface does not exist are shown to exhibit the uptake behavior presumed to characterize partition. Theoretically, as well as practically, surface uptake cannot be simply defined as 'adsorption' or 'partition', but rather there is a continuum of possible interactions starting with fixed site adsorption and ending with true partition between three-dimensional phases.A critical evaluation of recent suggestions that the adsorption of nonionic organic compounds by soils can be well-correlated with the partition of the compounds between an aqueous and a nonpolar phase (usually 1-octanol), or with water solubility is presented. The physical basis proposed for these assumptions is that adsorption of nonionic organic compounds on soil organic matter is a ″partition″ process between the aqueous phase and a hydrophobic surface phase. The evidence presented in the literature for the dominance of a partition mechanism is insufficient to prove its general applicability. Theoretically, as well as practically, surface uptake cannot be simply defined as ″adsorption″ or ″partition″ , but rather there is a continuum of possible interactions starting with fixed site adsorption and ending with true partition between three-dimensional phases.
Scientific Publication
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