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 -
Evaluation of the glassy/rubbery model for soil organic matter
Year:
1998
Authors :
בוריסובר, מיכאל
;
.
גרבר, אלן
;
.
Volume :
32
Co-Authors:
Graber, E.R., Institute of Soil, Water and Environmental Sciences, TJie Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Borisover, M.D., Institute of Soil, Water and Environmental Sciences, TJie Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
3286
To page:
3292
(
Total pages:
7
)
Abstract:
The glassy/rubbery model for soil organic matter (SOM) has been proposed to explain nonlinear sorption uptake isotherms, site-specific bisolute corn petition, increased isotherm nonlinearity with increasing uptake time, and desorption hysteresis observed for nonspecifically interacting solutes. The glassy S0M phase has been considered the locus of this nonlinear sorption behavior and of greater sorption (increased Freundlich constant Kf or Langmuir capacity term) as contrasted with the rubbery phase. The report of a glass transition in Aldrich humic acid has been considered the linchpin of this model In the current analysis, a number of points are made, including (i) a glassy polymer phase does not necessarily result in nonlinear sorption behavior; (ii) Aldrich humic acid, kerogen and coal are poor models for soil organic matter; and (iii) a number of different mechanisms may result in nonpartitioninglike sorption behavior, such as complex formation with an organic matter macromolecule, interactions at the surface of organic matter, or cross-linking of organic matter macromolecules resulting in a finite sorption domain.The glassy/rubbery model for soil organic matter (SOM) as been proposed to explain nonlinear sorption uptake isotherms, site-specific bisolute competition, increased isotherm nonlinearity with increasing uptake time, and desorption hysteresis observed for nonspecifically interacting solutes. The glassy SOM phase has been considered the locus of this nonlinear sorption behavior and of greater sorption (increased Freundlich constant Kf or Langmuir capacity term) as contrasted with the rubbery phase. The report of a glass transition in Aldrich humic acid has been considered the linchpin of this model. In the current analysis, a number of points are made, including (i) a glassy polymer phase does not necessarily result in nonlinear sorption behavior; (ii) Aldrich humic acid, kerogen, and coal are poor models for soil organic matter; and (iii) a number of different mechanisms may result in nonpartitioning-like sorption behavior, such as complex formation with an organic matter macromolecule, interactions at the surface of organic matter, or cross-linking of organic matter macromolecules resulting in a finite sorption domain.
Note:
Related Files :
1,3 dichlorobenzene
rubber
soil
soil chemistry
Soil organic matters (SOM)
soil pollution
unclassified drug
Zea mays
עוד תגיות
תוכן קשור
More details
DOI :
10.1021/es9801238
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32218
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:08
You may also be interested in
Scientific Publication
Evaluation of the glassy/rubbery model for soil organic matter
32
Graber, E.R., Institute of Soil, Water and Environmental Sciences, TJie Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Borisover, M.D., Institute of Soil, Water and Environmental Sciences, TJie Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Evaluation of the glassy/rubbery model for soil organic matter
The glassy/rubbery model for soil organic matter (SOM) has been proposed to explain nonlinear sorption uptake isotherms, site-specific bisolute corn petition, increased isotherm nonlinearity with increasing uptake time, and desorption hysteresis observed for nonspecifically interacting solutes. The glassy S0M phase has been considered the locus of this nonlinear sorption behavior and of greater sorption (increased Freundlich constant Kf or Langmuir capacity term) as contrasted with the rubbery phase. The report of a glass transition in Aldrich humic acid has been considered the linchpin of this model In the current analysis, a number of points are made, including (i) a glassy polymer phase does not necessarily result in nonlinear sorption behavior; (ii) Aldrich humic acid, kerogen and coal are poor models for soil organic matter; and (iii) a number of different mechanisms may result in nonpartitioninglike sorption behavior, such as complex formation with an organic matter macromolecule, interactions at the surface of organic matter, or cross-linking of organic matter macromolecules resulting in a finite sorption domain.The glassy/rubbery model for soil organic matter (SOM) as been proposed to explain nonlinear sorption uptake isotherms, site-specific bisolute competition, increased isotherm nonlinearity with increasing uptake time, and desorption hysteresis observed for nonspecifically interacting solutes. The glassy SOM phase has been considered the locus of this nonlinear sorption behavior and of greater sorption (increased Freundlich constant Kf or Langmuir capacity term) as contrasted with the rubbery phase. The report of a glass transition in Aldrich humic acid has been considered the linchpin of this model. In the current analysis, a number of points are made, including (i) a glassy polymer phase does not necessarily result in nonlinear sorption behavior; (ii) Aldrich humic acid, kerogen, and coal are poor models for soil organic matter; and (iii) a number of different mechanisms may result in nonpartitioning-like sorption behavior, such as complex formation with an organic matter macromolecule, interactions at the surface of organic matter, or cross-linking of organic matter macromolecules resulting in a finite sorption domain.
Scientific Publication
You may also be interested in