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A search for the presence of 2,3,7,8 tetrachlorodibenzo-p-dioxin in beef fat

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Summary

Specimens of fat taken from steers which had grazed on rangeland previously treated with 2,4,5-T herbicides were analyzed for the presence of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). A cleanup procedure resulting in a 500-fold concentration was followed by a gas chromatography-mass spectrometry detection technique. The limit of detection of TCDD (2.5 times peak to peak noise) was found to be in the 30–60 picogram range (3–6 ppt in beef fat using 10 gram samples).

None of the sixteen samples comprising two of the three studies showed any response for TCDD. In the third study, in which the animals were confined to a fenced pasture sprayed in its entirety with a 2,4,5-T herbicide, samples from three of the seven animals gave a positive response at the extremely low level of 3 to 4 ppt TCDD, which is at the detection limit.

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References

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Authors and Affiliations

  1. Analytical Laboratories, Dow Chemical Company, Midland, Mich.

    C. W. Kocher, N. H. Mahle, R. A. Hummel & L. A. Shadoff

  2. Residue/Environmental/Metabolism Research Agricultural Products Department, Dow Chemical Company, Midland, Mich.

    M. E. Getzendaner

Authors
  1. C. W. Kocher
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  2. N. H. Mahle
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  3. R. A. Hummel
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  4. L. A. Shadoff
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  5. M. E. Getzendaner
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Kocher, C.W., Mahle, N.H., Hummel, R.A. et al. A search for the presence of 2,3,7,8 tetrachlorodibenzo-p-dioxin in beef fat. Bull. Environ. Contam. Toxicol. 19, 229–236 (1978). https://doi.org/10.1007/BF01685791

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  • DOI: https://doi.org/10.1007/BF01685791

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