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A sampling method to determine insecticide residues on surfaces and its application to food-handling establishments

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Abstract

Known amounts of acephate, chlorpyrifos, and diazinon were applied to Formica, unfinished plywood, stainless steel, and vinyl tile. Cotton-ball and dental wick materials were dipped in 2-propanol and “swiped” over the treated surface area two time. More acephate was found on the second swipe compared to the first from vinyl tile, similar amounts on both swipes from plywood, and less on the second swipe from formica and stainless steel. The ratio of chlorpyrifos on Swipe 1 compared to Swipe 2 found with cotton-ball on both formica and stainless steel surfaces was equivalent (6:1), but a considerable difference was seen when two dental wick swipes were used. Residues of diazinon removed from formica and stainless steel were equivalent, regardless of the swiping material used. Residues of chlorpyrifos were detected by taking swipes of surfaces in two restaurants and a supermarket up to 6 mo after a prescribed application by a commercial pest control firm. The data show that measurable amounts of chloropyrifos can be detected on surfaces not treated with the insecticide for at least 6 mo.

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References

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Authors and Affiliations

  1. Pesticide Residue Research Laboratory, North Carolina State University, 27650, Raleigh, NC, USA

    R. B. Leidy, C. G. Wright & H. E. Dupree Jr.

  2. Department of Entomology, North Carolina State University, 27650, Raleigh, NC, USA

    R. B. Leidy, C. G. Wright & H. E. Dupree Jr.

Authors
  1. R. B. Leidy
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  2. C. G. Wright
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  3. H. E. Dupree Jr.
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Leidy, R.B., Wright, C.G. & Dupree, H.E. A sampling method to determine insecticide residues on surfaces and its application to food-handling establishments. Environ Monit Assess 9, 47–55 (1987). https://doi.org/10.1007/BF00394215

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  • DOI: https://doi.org/10.1007/BF00394215

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