Summary
A simple method for the determination of clenbuterol is described. It is extracted from the sample at pH ∼ 3 and then at pH ∼ 11, followed by partitioning the analyte into water at pH ∼ 3 and reextraction into ethyl acetate at pH ∼ 9. Clenbuterol is oxidized with KMnO4 to „clenbuteron“ for GC-determination. Recoveries for 0.01– 1.0 mg/kg were between 70% and 110% (standard deviation ±14%, n = 18).
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References
Steinwandter H (1985) Fresenius Z Anal Chem 322:752
Steinwandter H (1989) Universal extraction and cleanup methods. In: Sherma J (ed) Analytical methods for pesticides and plant growth regulators, vol XVI. Academic Press, Orlando (in press)
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Steinwandter, H. Simple screening method for the fast determination of clenbuterol in animal feeds. Z. Anal. Chem. 333, 634–636 (1989). https://doi.org/10.1007/BF00496936
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DOI: https://doi.org/10.1007/BF00496936