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- W181757105 abstract "Abstract Urea is extracted from rodent urine-contaminated material with hot acetone. After the extract is evaporated to dryness, aqueous urease solution is added to produce ammonia and carbon dioxide. A blue product, indophenol, is formed by the reaction of ammonia with phenol in the presence of hypochlorite. Absorbance is maximum at 625 nm. Presence of urea is easily detected at 4 μg. Detection of urine contamination in various materials is compared with detection by the AOAC urease– H2PtCL6 test." @default.
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- W181757105 date "1980-09-01" @default.
- W181757105 modified "2023-10-16" @default.
- W181757105 title "Spectrophotometric Determination of Urea in Urine Stains on Foods and Containers" @default.
- W181757105 doi "https://doi.org/10.1093/jaoac/63.5.985" @default.
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