Determination of nitrate nitrogen in bovine blood, milk, urine, and rumen liquor
1964
Greweling, T. | Davison, K.L. | Morris, C.J.
A cattle feeding experiment required that nitrate be determined in bovine milk, blood, urine, and rumen liquor. Attempts to apply the phenoldisulfonic acid or brucine procedures to these fluids gave erratic results, despite protein precipitation, chloride removal, and heavy metal precipitation. Application of a xylenol extraction procedure to the clarified solutions gave reproducible results and satisfactory recoveries of added nitrates.
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