Influence of organic matter and surfactants on solid-phase extraction of diquat, paraquat and difenzoquat from waters

IBANEZ, M
Call Number
PR 10721
Added Author
PICO, Y
MANES, J
Publication
Elsevier 1996
URL
Language
eng
Location Item Class Call Number Accession Number Copy Number Barcode Status eResource  
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Photocopies-Reprints
PR 10721
PR10721
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069604
Available
 
 
 
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170713 1996                  000 0 eng d
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$a PR 10721
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$a IBANEZ, M
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$a Influence of organic matter and surfactants on solid-phase extraction of diquat, paraquat and difenzoquat from waters
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$b Elsevier $c 1996
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$a In Journal of Chromatography A 1996 Vol 727 (2) March 245-252
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$a Presented at the XXIVth Annual Meeting of the Spanish Chromatography Group. 7as Jounadas de Análisis Instrumental, Madrid, 3–6 April, 1995.
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$a Analysis of diquat, paraquat and difenzoquat in water is performed using solid-phase extraction (SPE) on silica cartridges followed by high-performance liquid chromatographic (HPLC) analysis with a normal-phase column. UV detection with variable wavelength was used to determine each compound at its maximum of absorption providing an excellent sensitivity. Recoveries of these herbicides extracted from 1 1 of drinking water spiked at levels between 0.1 and 25 μg/l were higher than 85%. The limits of detection were under 0.1 μg/l. The effect that the presence of organic matter and surfactants in natural waters has on the extraction procedure was studied. Both, surfactants and organic matter (as humic material), show a negative effect on the recoveries of the herbicides and so their content in natural waters must be controlled.
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$a PR10721
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$a WATER ANALYSIS
650
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$a ENVIRONMENTAL ANALYSIS
650
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$a SOLID-PHASE EXTRACTION
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$a PARAQUAT
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$a DIQUAT
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$a PHOTOCOPIES--REPRINTS
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$a PICO, Y
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$a MANES, J
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$u https://doi.org/10.1016/0021-9673(95)01101-3
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Subject
WATER ANALYSIS
ENVIRONMENTAL ANALYSIS
SOLID-PHASE EXTRACTION
PARAQUAT
DIQUAT
PHOTOCOPIES--REPRINTS
Summary
Analysis of diquat, paraquat and difenzoquat in water is performed using solid-phase extraction (SPE) on silica cartridges followed by high-performance liquid chromatographic (HPLC) analysis with a normal-phase column. UV detection with variable wavelength was used to determine each compound at its maximum of absorption providing an excellent sensitivity. Recoveries of these herbicides extracted from 1 1 of drinking water spiked at levels between 0.1 and 25 μg/l were higher than 85%. The limits of detection were under 0.1 μg/l. The effect that the presence of organic matter and surfactants in natural waters has on the extraction procedure was studied. Both, surfactants and organic matter (as humic material), show a negative effect on the recoveries of the herbicides and so their content in natural waters must be controlled.
Notes
In Journal of Chromatography A 1996 Vol 727 (2) March 245-252
Presented at the XXIVth Annual Meeting of the Spanish Chromatography Group. 7as Jounadas de Análisis Instrumental, Madrid, 3–6 April, 1995.