Determination of twenty pesticide residues in Viscum coloratum by gas chromatography using cloud-point extraction / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 2577-2580, 2009.
Article
em Zh
| WPRIM
| ID: wpr-315403
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To establish a gas chromatography method for simultaneous determination of organochlorine and pyrethroid pesticide residues in Viscum coloratum by cloud-point extraction (CPE).</p><p><b>METHOD</b>Pesticides were extracted with the non-ionic surfactant Triton X-100. The apparatus was gas chromatography with electron capture detector and the separation was performed on an Hp-5 column. The pesticide residues were calculated by external standard method.</p><p><b>RESULT</b>Good linear relation was obtained over the range of 5-500 microg L(-1) for organochlorine and 10-1,000 microg L(-1) for pyrethroid. The limits of detection was 1.5-7.5 microg kg(-1). The average recoveries of organochlorine and pyrethroid were 74.15% -111.6% with corresponding RSD of 4.0% -9.1%.</p><p><b>CONCLUSION</b>The sample and rapid method was applied to pesticide residues determination.</p>
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Extratos Vegetais
/
Resíduos de Praguicidas
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Química
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Cromatografia Gasosa
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Octoxinol
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Viscum
/
Limite de Detecção
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Métodos
Idioma:
Zh
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2009
Tipo de documento:
Article