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 -
Sulfentrazone adsorbed on micelle-montmorillonite complexes for slow release in soil
Year:
2003
Authors :
בוריסובר, מיכאל
;
.
Volume :
51
Co-Authors:
Polubesova, T., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel, Seagram Ctr. for Soil/Water Sciences, Fac. Agric. Food/Environ. Qual. Sci., Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Nir, S., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Rabinovitz, O., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Borisover, M., Inst. of Soil, Water/Environ. Sci., Volcani Center, ARO, 50250 Bet Dagan, Israel
Rubin, B., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Facilitators :
From page:
3410
To page:
3414
(
Total pages:
5
)
Abstract:
Interactions of the herbicide sulfentrazone with the cationic surfactants octadecyltrimethylammonium (ODTMA), hexadecyltrimethylammonium (HDTMA), and benzyldimethylhexadecylammonium (BDM-HDA) have been studied for the design of slow-release formulations based on sulfentrazone adsorbed on a micelle-montmorillonite complex. Adsorbed amounts of sulfentrazone on ODTMA- and BDMHDA-montmorillonite complexes were 99.2-99.8% of that added, and desorption of herbicide in water during 24 h was low. After 10 washings in funnels with soil, only 2.6% of herbicide was released from ODTMA-montmorillonite formulations versus 100% release from the commercial formulation. The strong binding of sulfentrazone to micelles was confirmed by pH and spectroscopic measurements and was explained by the formation of ionic pairs between cationic surfactant and anionic herbicide. The ODTMA-clay and commercial formulations of sulfentrazone yield almost complete and 40% growth inhibition of green foxtail, respectively, at 700 g of active ingredient/ha. Hence, the slow release from micelle-clay formulations of sulfentrazone promotes its biological activity and reduces environmental contamination.
Note:
Related Files :
Adsorption
Environmental Pollution
herbicides
pH
soil
soil chemistry
עוד תגיות
תוכן קשור
More details
DOI :
10.1021/jf030002d
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21213
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
Scientific Publication
Sulfentrazone adsorbed on micelle-montmorillonite complexes for slow release in soil
51
Polubesova, T., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel, Seagram Ctr. for Soil/Water Sciences, Fac. Agric. Food/Environ. Qual. Sci., Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Nir, S., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Rabinovitz, O., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Borisover, M., Inst. of Soil, Water/Environ. Sci., Volcani Center, ARO, 50250 Bet Dagan, Israel
Rubin, B., Faculty of Agricultural, Food/Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Sulfentrazone adsorbed on micelle-montmorillonite complexes for slow release in soil
Interactions of the herbicide sulfentrazone with the cationic surfactants octadecyltrimethylammonium (ODTMA), hexadecyltrimethylammonium (HDTMA), and benzyldimethylhexadecylammonium (BDM-HDA) have been studied for the design of slow-release formulations based on sulfentrazone adsorbed on a micelle-montmorillonite complex. Adsorbed amounts of sulfentrazone on ODTMA- and BDMHDA-montmorillonite complexes were 99.2-99.8% of that added, and desorption of herbicide in water during 24 h was low. After 10 washings in funnels with soil, only 2.6% of herbicide was released from ODTMA-montmorillonite formulations versus 100% release from the commercial formulation. The strong binding of sulfentrazone to micelles was confirmed by pH and spectroscopic measurements and was explained by the formation of ionic pairs between cationic surfactant and anionic herbicide. The ODTMA-clay and commercial formulations of sulfentrazone yield almost complete and 40% growth inhibition of green foxtail, respectively, at 700 g of active ingredient/ha. Hence, the slow release from micelle-clay formulations of sulfentrazone promotes its biological activity and reduces environmental contamination.
Scientific Publication
You may also be interested in