Tea polyphenols are strong antioxidants and are believed to have beneficial health effects. However, the blood and tissue levels of these compounds are not well characterized because of a lack of suitable analytical methods for the biological resolution of these compounds. Previously, we developed m
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An Improved Coulometric Titration Method for Oxygen Content and Valence Determinations in Bismuth and Lead Cuprates
โ Scribed by M. Karppinen; H. Yamauchi; S. Tanaka
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 219 KB
- Volume
- 104
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
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A known amount of lithium or calcium nitrate solution is added to the sample powder which is then heated in air or oxygen. The oxygen in test samples of UO,+,, SrO.,UO.,O,+, and SrO.,UO.,O,+, was determined with an estimated standard deviation of +\_ 0.002.