נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Rapid removal of gypsum by resin prior to particle-size-distribution analysis in soils
Year:
1989
Source of publication :
Soil Science
Authors :
אלפרוביץ', נחמן
;
.
לוי, גיא
;
.
Volume :
148
Co-Authors:
Stern, R., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Alperovitch, N., Inst. of Soils and Water, ARO, P.O. Box 6, Bet Dagan, 50250, Israel
Levy, G.J., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Facilitators :
From page:
448
To page:
451
(
Total pages:
4
)
Abstract:
The presence of gypsum in soils has complicated the determination of particle-size distribution (PSD) due to the difficulty in dispersion of the soils. A technique for rapidly removing gypsum from highly gypsereous soil samples is presented here, using the resin method. A mixture of Na and Cl resins enhances the complete dissolution of appreciable amounts of gypsum in salt solutions within 6 h. The dissolved calcium and sulfate exchange with the sodium and chloride on the resins, resulting in a solution containing primarily Na and Cl ions. The increase in electrical conductivity of the gypsereous soil solution is indicative of the amount of gypsum initially present. Thus, from a calibration curve, the amount of gypsum present in a soil sample is accurately determined. After the excess soluble salt has been removed, a stable clay and silt suspension is obtained, enabling a PSD determination using the pipette method. Removing gypsum from soil samples using the resin method has no significant effect on the particle-size distribution of the soils studied. © 1989 Williams & Wilkins.
Note:
Related Files :
gypsum removal
Particle size distribution
rapid removal
resin
soil
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26948
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:26
Scientific Publication
Rapid removal of gypsum by resin prior to particle-size-distribution analysis in soils
148
Stern, R., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Alperovitch, N., Inst. of Soils and Water, ARO, P.O. Box 6, Bet Dagan, 50250, Israel
Levy, G.J., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Rapid removal of gypsum by resin prior to particle-size-distribution analysis in soils
The presence of gypsum in soils has complicated the determination of particle-size distribution (PSD) due to the difficulty in dispersion of the soils. A technique for rapidly removing gypsum from highly gypsereous soil samples is presented here, using the resin method. A mixture of Na and Cl resins enhances the complete dissolution of appreciable amounts of gypsum in salt solutions within 6 h. The dissolved calcium and sulfate exchange with the sodium and chloride on the resins, resulting in a solution containing primarily Na and Cl ions. The increase in electrical conductivity of the gypsereous soil solution is indicative of the amount of gypsum initially present. Thus, from a calibration curve, the amount of gypsum present in a soil sample is accurately determined. After the excess soluble salt has been removed, a stable clay and silt suspension is obtained, enabling a PSD determination using the pipette method. Removing gypsum from soil samples using the resin method has no significant effect on the particle-size distribution of the soils studied. © 1989 Williams & Wilkins.
Scientific Publication
You may also be interested in