Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa
A method for simultaneous analysis of trihalomethanes and organochloride and pyrethroid pesticides in water utilizing SPME-HS and GC-ECD was developed. In the optimized method 25 mL of water containing 2% (w/v) Na2HPO4 were heated to 60 °C for 50 min. The fiber (PDMS - 100 μm) was exposed to a headspace for the same period. For all analytes it was found that LOQ < MCL (Maximum Contaminant Level), CV < 20% and r > 0.9. The method was applied to potable and surface water samples. Some trihalomethanes were encountered in potable waters, at levels below the MCL.
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Sociedade Brasileira de Química
2011
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oai:scielo:S0100-404220110002000192011-03-14Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosaCarlos,Elenice A.Neves,Antônio A.Reis,CésarQueiroz,Maria Eliana L. R. de SPME THM pesticides A method for simultaneous analysis of trihalomethanes and organochloride and pyrethroid pesticides in water utilizing SPME-HS and GC-ECD was developed. In the optimized method 25 mL of water containing 2% (w/v) Na2HPO4 were heated to 60 °C for 50 min. The fiber (PDMS - 100 μm) was exposed to a headspace for the same period. For all analytes it was found that LOQ < MCL (Maximum Contaminant Level), CV < 20% and r > 0.9. The method was applied to potable and surface water samples. Some trihalomethanes were encountered in potable waters, at levels below the MCL.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.34 n.2 20112011-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000200019pt10.1590/S0100-40422011000200019 |
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Carlos,Elenice A. Neves,Antônio A. Reis,César Queiroz,Maria Eliana L. R. de |
| spellingShingle |
Carlos,Elenice A. Neves,Antônio A. Reis,César Queiroz,Maria Eliana L. R. de Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| author_facet |
Carlos,Elenice A. Neves,Antônio A. Reis,César Queiroz,Maria Eliana L. R. de |
| author_sort |
Carlos,Elenice A. |
| title |
Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| title_short |
Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| title_full |
Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| title_fullStr |
Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| title_full_unstemmed |
Determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| title_sort |
determinação simultânea de trialometanos e agrotóxicos em água por cromatografia gasosa |
| description |
A method for simultaneous analysis of trihalomethanes and organochloride and pyrethroid pesticides in water utilizing SPME-HS and GC-ECD was developed. In the optimized method 25 mL of water containing 2% (w/v) Na2HPO4 were heated to 60 °C for 50 min. The fiber (PDMS - 100 μm) was exposed to a headspace for the same period. For all analytes it was found that LOQ < MCL (Maximum Contaminant Level), CV < 20% and r > 0.9. The method was applied to potable and surface water samples. Some trihalomethanes were encountered in potable waters, at levels below the MCL. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2011 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000200019 |
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