Liquid chromatographic determination of nicarbazin in feed.

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Hurlbut JA, Nightengale CT, Burkepile RG

Liquid chromatographic determination of nicarbazin in feed.

J Assoc Off Anal Chem. 1985 May-Jun;68(3):596-8.

PubMed ID
4019387 [ View in PubMed
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Abstract

A liquid chromatographic method was developed for the determination of nicarbazin (4,4'-dinitrocarbanilide.2-hydroxy-4,6-dimethylpyrimidine) in chicken feed. Ground feed was extracted with hot dimethylformamide, filtered, and then cleaned up on an alumina column. The nicarbazin was eluted from the column with ethanol and quantitated using a reverse phase C-18 column, with a methanol-water mobile phase and ultraviolet detection at 344 nm. Recoveries at a typical use level of 100 micrograms/g feed averaged 98% with a standard deviation of 3%. Samples fortified at levels as low as 0.1 micrograms/g were analyzed with 92% recovery. The detection limit is 1 ng, and the response is linear between 4 and 1000 ng. Feed additives in combination with nicarbazin do not interfere with recovery.

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