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Application of the high-performance liquid chromatography-flameless atomic absorption method to the study of alkyl arsenical herbicide metabolism in soil
Year:
1982
Authors :
אהרונסון, נדב
;
.
Volume :
30
Co-Authors:
Woolson, E.A., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States
Aharonson, N., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States, Agricultural Research Organization, Volcani Center, Bet-Dagan, Israel
Iadevaia, R., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States
Facilitators :
From page:
580
To page:
584
(
Total pages:
5
)
Abstract:
Arsenite, cacodylic acid (CA), methylarsonic acid (MAA), and arsenate in soil extracts were separated on an anion-exchange high-performance liquid chromatography (HPLC) column and detected on a graphite furnace atomic absorption (GFAA) spectrometer. Laboratory soils were treated with CA and amended with 0, 50, or 100 tons/ha of sewage sludge, manure, or hay. In moist aerobic soils, 80% of the 10 ppm of As applied as CA was degraded within 60 days. Degradation of [14C]CA was followed by the formation of arsenate and small amounts of MAA. 14C and arsenic were lost from the soil in the form of 14CO2 and volatile alkylarsines. CA degradation in flooded anaerobic soils was slower with larger amounts of MAA and less 14CO2 formed than found in aerobic soils. CA degradation in soils treated with 1000 ppm of HgCl2 or 100 tons/ha sewage sludge was inhibited. In a field experiment, MAA and CA were detected 1.5 years after MAA, CA, or arsenite was applied, but the major product was arsenate. The half-life for field-applied CA or MAA was 20 and 22 days, respectively.
Note:
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DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23171
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:57
Scientific Publication
Application of the high-performance liquid chromatography-flameless atomic absorption method to the study of alkyl arsenical herbicide metabolism in soil
30
Woolson, E.A., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States
Aharonson, N., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States, Agricultural Research Organization, Volcani Center, Bet-Dagan, Israel
Iadevaia, R., Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Belstville, MD 20705, United States
Application of the high-performance liquid chromatography-flameless atomic absorption method to the study of alkyl arsenical herbicide metabolism in soil
Arsenite, cacodylic acid (CA), methylarsonic acid (MAA), and arsenate in soil extracts were separated on an anion-exchange high-performance liquid chromatography (HPLC) column and detected on a graphite furnace atomic absorption (GFAA) spectrometer. Laboratory soils were treated with CA and amended with 0, 50, or 100 tons/ha of sewage sludge, manure, or hay. In moist aerobic soils, 80% of the 10 ppm of As applied as CA was degraded within 60 days. Degradation of [14C]CA was followed by the formation of arsenate and small amounts of MAA. 14C and arsenic were lost from the soil in the form of 14CO2 and volatile alkylarsines. CA degradation in flooded anaerobic soils was slower with larger amounts of MAA and less 14CO2 formed than found in aerobic soils. CA degradation in soils treated with 1000 ppm of HgCl2 or 100 tons/ha sewage sludge was inhibited. In a field experiment, MAA and CA were detected 1.5 years after MAA, CA, or arsenite was applied, but the major product was arsenate. The half-life for field-applied CA or MAA was 20 and 22 days, respectively.
Scientific Publication
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