Technical Note: A procedure for the preparation and quantitative analysis of samples for titanium dioxide1

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ID: 304364
2004
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Abstract
A procedure was developed for the rapid analysis of titanium dioxide (TiO2) concentrations in feed and fecal samples. Samples were digested in concentrated H2SO4 for 2 h, followed by addition of 30% H2O2, and absorbance was measured at 410 nm. Standards were prepared by spiking blanks with increasing amounts of TiO2, resulting in a linear standard curve. Complete analysis using this procedure can typically be accomplished within 4.5 h. This procedure was compared to a previously published dry-ash procedure for the analysis of TiO2 in bovine fecal samples. Three sources of OM devoid of TiO2 (a forage sample, a bovine fecal sample without Cr2O3, and a bovine fecal sample containing Cr2O3) were spiked with graded amounts (0, 2, 4, 6, 8, or 10 mg) of TiO2. With our procedure, TiO2 recoveries averaged 96.7, 97.5, and 98.5%, for the three OM sources, respectively, vs. 74.3, 83.8, and 53.1% for the same samples analyzed using the dry-ash method. These results suggest that our procedure is a rapid and accurate alternative to dry-ash procedures for the determination of TiO2.
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openalex_W1785091889 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wendy D. Myers, P. A. Ludden, V. Nayigihugu, B. W. Hess
Journal italian journal of animal science
Year 2004
DOI
10.2527/2004.821179x
URL
https://doi.org/10.2527/2004.821179x
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