Residues of DDT and Its Analogues in Midwestern Mint Hay and Oil1

Ballee, D. L.; Gould, George E.; Fahey, J. E.

doi:10.1093/jee/63.5.1658

Cited by 4 publications

(3 citation statements)

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“…In the present study, the method of Groene- Although the persistence of residues of organophosphorus insecticides and fungicides in peppermint has been studied (Be ´langer, 1989;Kiiegemagi et al, 1973;Inman et al, 1983), the fates of propiconazole and tebuconazole, applied to peppermint, have not been determined. Chlorinated pesticides have been reported to persist in the vegetative material of peppermint and have co-distilled with the oil during steam distillation (Gould, 1960;Starr et al, 1963;Ballee et al, 1970).…”

Section: Introductionmentioning

confidence: 99%

Dissipation of Propiconazole and Tebuconazole in Peppermint Crops (Mentha piperita (Labiatae)) and Their Residues in Distilled Oils

Garland

Menary

Davies

1998

J. Agric. Food Chem.

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The broad-spectrum, systemic fungicides propiconazole (1) and tebuconazole (2) are used to control rust in peppermint (Mentha piperita L.). An analytical method, using gas chromatography combined with detection by high-resolution mass spectrometry, was developed to allow for the simultaneous monitoring of both pesticides in peppermint leaves and oil. Field trials were established to determine the rate of dissipation of tebuconazole and propiconazole in peppermint crops. Three applications of each fungicide were trialed at two rates (125 and 250 g of active ingredient (ai)/ha). At harvest, 64 days after the final application, propiconazole was detected at levels of 0.06 mg/kg and 0.09 mg/kg of dry weight, and tebuconazole was detected at 0.26 and 0.80 mg/kg dry weight, in identical trials. Rates of dissipation of propiconazole and tebuconazole were lower at a second trial site, where three applications of 125 g/ha ai for each fungicide resulted in residue levels of 0.21 mg/kg for both pesticides, detected 89 days after the last application. Propiconazole and tebuconazole were detected in the distilled oil at levels between 0.02 and 0.05 mg/kg and between 0.011 and 0.041 mg/kg, respectively. Propiconazole had a higher tendency to co-distill with the peppermint oil, with 0.7% of that present in the vegetative material ending up in the oil, compared to 0.09% of tebuconazole.

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Section: Introductionmentioning

confidence: 99%

Dissipation of Propiconazole and Tebuconazole in Peppermint Crops (Mentha piperita (Labiatae)) and Their Residues in Distilled Oils

Garland

Menary

Davies

1998

J. Agric. Food Chem.

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“…Getzendaner (140) described an electron-capture GLC procedure for the determination of residues of dalapon in four types of substrates: fresh plant tissues, dry plant tissues not containing oil, dry plant tissues containing oil, and body fluids. Recoveries from 22 different substrates averaged 90%.…”

Section: Herbicidesmentioning

confidence: 99%

“…Cranmer and coworkers (93) determined DDT and metabolites, including DDA in human urine, by gas chromatography. Bailee and coworkers (22) determined DDT and its analogues in midwestern mint hay and oil. Abou-Donia (4) studied DDT-type compounds using separation and identification by a system combining TLC, GLC, and IR.…”

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confidence: 99%

Pesticide residues

Thornburg¹

1971

Anal. Chem.

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Residues of the insecticides phorate and methomyl in mint hay and oil

Kiigemagi¹,

Wellman²,

Cooley³

et al. 1973

Pestic. Sci.

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Since mint oil is used as a flavouring agent for foods and cosmetics, pesticide residues in the oil are undesirable. The residual behaviour of two pesticides, phorate and methomyl, was studied as replacements for chlorinated hydrocarbon pesticides which leave residues in the oil. Phorate applications of 1.1 kg/ha resulted in oil residues of 0.24 mg/kg total phorate in Oregon samples and 1.69 mg/kg in Washington samples. Less than 1% of the residues in the hay distilled with the oil. Mint oil undergoes a 100‐ to 1000‐fold dilution in commercial use with a corresponding reduction of residues in the final product. No residues of methomyl were found in the oil, even with hay residues as high as 5.34 mg/kg. Residues in hay decreased to half of initial levels in 2 to 4 days, independently of use conditions. It was concluded that the proposed use of phorate or methomyl for control of mint pests does not present a residue hazard. Details of the analytical methods used are also presented.

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Residues of DDT and Its Analogues in Midwestern Mint Hay and Oil1

Cited by 4 publications

References 0 publications

Dissipation of Propiconazole and Tebuconazole in Peppermint Crops (Mentha piperita (Labiatae)) and Their Residues in Distilled Oils

Dissipation of Propiconazole and Tebuconazole in Peppermint Crops (Mentha piperita (Labiatae)) and Their Residues in Distilled Oils

Pesticide residues

Residues of the insecticides phorate and methomyl in mint hay and oil

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