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https://locus.ufv.br//handle/123456789/17795
Tipo: | Artigo |
Título: | Evaluation of pesticide adsorption in gas chromatographic injector and column |
Autor(es): | Neves, Antônio Augusto Pinho, Gevany Paulino de Silvério, Flaviano Oliveira Queiroz, Maria Eliana Lopes Ribeiro de |
Abstract: | Components in complex matrices can cause variations in chromatographic response during analysis of pesticides by gas chromatography. These variations are related to the competition between analytes and matrix components for adsorption sites in the chromatographic system. The capacity of the pesticides chlorpyrifos and deltamethrin to be adsorbed in the injector and chromatographic column was evaluated by constructing three isotherms and changing the column heating rate to 10 and 30 ºC min-1. By using ANCOVA to compare the slope of calibration graphs, results showed that the higher the injector temperature (310 ºC) the lower the pesticide adsorption. Also, deltamethrin influenced the adsorption of chlorpyrifos on the column chromatographic. |
Palavras-chave: | Matrix effects Pesticides Gas chromatography |
Editor: | Química Nova |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S0100-40422012000400016 http://www.locus.ufv.br/handle/123456789/17795 |
Data do documento: | 31-Jan-2012 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf | texto completo | 514,77 kB | Adobe PDF | ![]() Visualizar/Abrir |
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