Determination of herbicides residues in soil by small scale extraction
Herbicides such as trifluralin, simazine, atrazine, metribuzin and metolachlor are used in Brazilian agriculture. The efficiency of a small scale method for determination of these herbicides and two degradation products (deisopropylatrazine and deethylatrazine) in soil samples was evaluated. The compounds were extracted from soil samples (5 g) with 20 ml of ethyl acetate in a mechanical shaker for 50 min. Following the extraction, the supernatant was dried through anhydrous sodium sulphate, concentrated and analysed by high resolution gas chromatography (HRGC) with thermionic specific detection (TSD). Mean recoveries obtained from soil samples fortified at three different levels ranged from 81 to 115% with relative standard deviation (RSD) values varying from 1.2 to 12.7%. The method detection limits ranged from 0.01 to 0.06 mg kg-1. The methodology was applied using soil samples from farms located near the town of Araraquara, in the State of São Paulo, Brazil.
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Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP
2002
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oai:scielo:S0100-467020020001000212002-09-02Determination of herbicides residues in soil by small scale extractionPOLESE,LucianaDORES,Eliana Freire Gaspar de CarvalhoJARDIM,Elaine Fátima GalattiNAVICKIENE,SandroRIBEIRO,Maria Lúcia Soil herbicides residues gas chromatography Herbicides such as trifluralin, simazine, atrazine, metribuzin and metolachlor are used in Brazilian agriculture. The efficiency of a small scale method for determination of these herbicides and two degradation products (deisopropylatrazine and deethylatrazine) in soil samples was evaluated. The compounds were extracted from soil samples (5 g) with 20 ml of ethyl acetate in a mechanical shaker for 50 min. Following the extraction, the supernatant was dried through anhydrous sodium sulphate, concentrated and analysed by high resolution gas chromatography (HRGC) with thermionic specific detection (TSD). Mean recoveries obtained from soil samples fortified at three different levels ranged from 81 to 115% with relative standard deviation (RSD) values varying from 1.2 to 12.7%. The method detection limits ranged from 0.01 to 0.06 mg kg-1. The methodology was applied using soil samples from farms located near the town of Araraquara, in the State of São Paulo, Brazil.info:eu-repo/semantics/openAccessFundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESPEclética Química v.27 20022002-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702002000100021en10.1590/S0100-46702002000100021 |
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POLESE,Luciana DORES,Eliana Freire Gaspar de Carvalho JARDIM,Elaine Fátima Galatti NAVICKIENE,Sandro RIBEIRO,Maria Lúcia |
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POLESE,Luciana DORES,Eliana Freire Gaspar de Carvalho JARDIM,Elaine Fátima Galatti NAVICKIENE,Sandro RIBEIRO,Maria Lúcia Determination of herbicides residues in soil by small scale extraction |
author_facet |
POLESE,Luciana DORES,Eliana Freire Gaspar de Carvalho JARDIM,Elaine Fátima Galatti NAVICKIENE,Sandro RIBEIRO,Maria Lúcia |
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POLESE,Luciana |
title |
Determination of herbicides residues in soil by small scale extraction |
title_short |
Determination of herbicides residues in soil by small scale extraction |
title_full |
Determination of herbicides residues in soil by small scale extraction |
title_fullStr |
Determination of herbicides residues in soil by small scale extraction |
title_full_unstemmed |
Determination of herbicides residues in soil by small scale extraction |
title_sort |
determination of herbicides residues in soil by small scale extraction |
description |
Herbicides such as trifluralin, simazine, atrazine, metribuzin and metolachlor are used in Brazilian agriculture. The efficiency of a small scale method for determination of these herbicides and two degradation products (deisopropylatrazine and deethylatrazine) in soil samples was evaluated. The compounds were extracted from soil samples (5 g) with 20 ml of ethyl acetate in a mechanical shaker for 50 min. Following the extraction, the supernatant was dried through anhydrous sodium sulphate, concentrated and analysed by high resolution gas chromatography (HRGC) with thermionic specific detection (TSD). Mean recoveries obtained from soil samples fortified at three different levels ranged from 81 to 115% with relative standard deviation (RSD) values varying from 1.2 to 12.7%. The method detection limits ranged from 0.01 to 0.06 mg kg-1. The methodology was applied using soil samples from farms located near the town of Araraquara, in the State of São Paulo, Brazil. |
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Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
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2002 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702002000100021 |
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AT poleseluciana determinationofherbicidesresiduesinsoilbysmallscaleextraction AT doreselianafreiregaspardecarvalho determinationofherbicidesresiduesinsoilbysmallscaleextraction AT jardimelainefatimagalatti determinationofherbicidesresiduesinsoilbysmallscaleextraction AT navickienesandro determinationofherbicidesresiduesinsoilbysmallscaleextraction AT ribeiromarialucia determinationofherbicidesresiduesinsoilbysmallscaleextraction |
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