GLC multiresidue analysis of postharvest fungicides in citrus fruit |
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Authors: | M T Lafuente and J L Tadeo |
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Institution: | (1) Institute Valenciano de Investigaciones Agrarias, (I.V.I.A.), Moncada, Valencia, Spain |
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Abstract: | Summary A simple GLC multiresidue method for the analysis of fenpropimorph, thiabendazole, imazalil, propiconazole and prochloraz residues in citrus fruit, with a limit of detection of 0.1 ppm, is reported.The fungicides are extracted with hexane: ethyl acetate (90:10, v/v) after pH-adjustment of the fruit homogenate. The GLC-separation is carried out using a bonded phase, SE-54, fused silica capillary column and fungicides are determined with a nitrogen-phosphorus detector.Recovery was always higher than 80% with standard deviation equal or lower than 7%. The method is suitable to determine residues in citrus, whole fruit or peel, treated with these fungicides at usual concentrations to avoid citrus decay.
GLC-Verfahren zur Bestimmung mehrerer Fungicide in Citrusfrüchten nach der Ernte |
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