Improved method for determination of chlorothalonil and related residues in cranberries

Tetrachloroisophthalonitrile (chlorothalonil) was applied under controlled conditions in 1985 to a cranberry bog for fungus control and for residue studies. Randomly selected samples of cranberries were analyzed for residues of chlorothalonil, its metabolite 4-hydroxy-2,5,6-trichloroisophthalonitril...

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Bibliographic Details
Published inJournal of the Association of Official Analytical Chemists Vol. 71; no. 2; p. 358
Main Authors El-Nabarawy, I.M, Carey, W.F
Format Journal Article
LanguageEnglish
Published United States 01.03.1988
Subjects
ANALISIS
ANALYSE
ANALYSIS
ARANDANO AMERICANO
CANNEBERGE
CHLOROTHALONIL
Chromatography, Gas
CLOROTALONIL
CRANBERRIES
Fruit - analysis
Fungicides, Industrial - analysis
Hexachlorobenzene - analysis
Indicators and Reagents
Methylation
Nitriles - analysis
PESTICIDE
Pesticide Residues - analysis
PESTICIDES
PLAGUICIDAS
RESIDU
RESIDUES
RESIDUOS
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Summary:Tetrachloroisophthalonitrile (chlorothalonil) was applied under controlled conditions in 1985 to a cranberry bog for fungus control and for residue studies. Randomly selected samples of cranberries were analyzed for residues of chlorothalonil, its metabolite 4-hydroxy-2,5,6-trichloroisophthalonitrile, hexachlorobenzene, and pentachlorobenzonitrile by extraction, methylation, Florisil column cleanup, and electron capture gas chromatography. Because of interferences in the GC determinative step, previously reported methodology was modified. The total residues found in the test samples were well below the permissible limit for the parent and related compounds.
Bibliography:Q03
8833901
ISSN:0004-5756
DOI:10.1093/jaoac/71.2.358