Determination of fungicide residues in peach trees
The residue analyses of three fungicides, thiram, captan and benomyl, have been accomplished in peach trees. Thiram was extracted with hexaneethyl acetate (8020 v/v) and determined after a column cleanup by reverse-phase HPLC with a mixture of acetonitrile0.3 ammonia at 280 nm. Captan was extracted with acetonitrilewater (21) and determined by GLC-ECD after a partition and a column clean-up. Benomyl was extracted with ethyl acetate and determined, as MBC, by reverse-phase HPLC with methanol0.3 ammonia, after a partition and a column clean-up. Recoveries through the methods were always higher than 70%. The detection limits were 0.5 ppm for thiram, 0.02 ppm for captan and 0.2 ppm for benomyl, based on a 5 g sample. Residue levels in peach twigs, treated with fungicide solutions, are reported.© 1989, Taylor & Francis Group, LLC. All rights reserved.
| Main Authors: | , , , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Taylor & Francis
1989
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| Subjects: | Thiram, Captan, Benomy, Residues, Peach trees, |
| Online Access: | http://hdl.handle.net/20.500.12792/4058 http://hdl.handle.net/10261/290461 |
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