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Soil-parathion surface interactions
Year:
1978
Source of publication :
Residue Reviews
Authors :
Saltzman, Sarina
;
.
Volume :
VOL.69
Co-Authors:
Yaron, B., Div. Soil Residues Chem., Inst. Soils Water, Agric. Res. Organ., Bet Dagan, Israel
Saltzman, S., Div. Soil Residues Chem., Inst. Soils Water, Agric. Res. Organ., Bet Dagan, Israel
Facilitators :
From page:
1
To page:
34
(
Total pages:
34
)
Abstract:
Summarizing the present theoretical knowledge on the physicochemical interactions between parathion and soil constituents, the following practical conclusions concerning the behavior of parathion in the soil environment may be drawn: 1. Reaching the soil, parathion is distributed among the solid, liquid, and gaseous soil phases. In the absence of water, parathion is preferentially distributed in the solid phase. 2. The affinity for parathion of the constituents of the soil solid phase decreases in the order: organic matter > clay fraction (montmorillonite > attapulgite > kaolinite) > coarse fraction. 3. The hysteresis in parathion release from the adsorbed phase is due to its strong bonding to organic colloids. Hence, a build-up of long-lasting residues in soils is a possibility to consider. 4. The chemical degradation of parathion in soils is a slow process, the rate of which is dependent on the soil properties and environmental factors. 5. The chemical degradation of parathion in soils proceeds by the hydrolysis of the phosphate ester bond. The resulting nontoxic metabolites, mainly the phosphate moiety, may be retained by the soil colloids.
Note:
Related Files :
parathion
soil
theoretical study
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Language:
English
Editors' remarks:
ID:
28994
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:43
Scientific Publication
Soil-parathion surface interactions
VOL.69
Yaron, B., Div. Soil Residues Chem., Inst. Soils Water, Agric. Res. Organ., Bet Dagan, Israel
Saltzman, S., Div. Soil Residues Chem., Inst. Soils Water, Agric. Res. Organ., Bet Dagan, Israel
Soil-parathion surface interactions
Summarizing the present theoretical knowledge on the physicochemical interactions between parathion and soil constituents, the following practical conclusions concerning the behavior of parathion in the soil environment may be drawn: 1. Reaching the soil, parathion is distributed among the solid, liquid, and gaseous soil phases. In the absence of water, parathion is preferentially distributed in the solid phase. 2. The affinity for parathion of the constituents of the soil solid phase decreases in the order: organic matter > clay fraction (montmorillonite > attapulgite > kaolinite) > coarse fraction. 3. The hysteresis in parathion release from the adsorbed phase is due to its strong bonding to organic colloids. Hence, a build-up of long-lasting residues in soils is a possibility to consider. 4. The chemical degradation of parathion in soils is a slow process, the rate of which is dependent on the soil properties and environmental factors. 5. The chemical degradation of parathion in soils proceeds by the hydrolysis of the phosphate ester bond. The resulting nontoxic metabolites, mainly the phosphate moiety, may be retained by the soil colloids.
Scientific Publication
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