The Penetration of 1-Naphthol-2-Sulphonate Indophenol, o-Chloro Phenol Indophenol and o-Cresol Indophenol into Valonia
نویسندگان
چکیده
منابع مشابه
The Penetration of m-Bromo-Phenol Indophenol and of Guaiacol Indophenol into Valonia Ventricosa.
This paper is a continuation of the study of the penetration of oxidation-reduction indicators into living plants of Valonia ventricosa. Two indicators have been used, namely, meta-bromo-phenol indophenol and guaiacol indophenol. The first one is the most positive of any of the indicators so far used in this series and is very readily reduced by living cells. The second one is in the region of ...
متن کاملIndophenol method for acetaminophen in serum examined.
We show that an indophenol-based colorimetric method for acetaminophen (Clin Toxicol 15: 67-73, 1979) has less than maximal sensitivity because of (a) incomplete hydrolysis, related to suboptimal acid concentration; (b) suboptimal hydrolysis time; and (c) possible deterioration of the ammonium hydroxide reagent after 2.5 months. We have modified the method by optimizing duration of hydrolysis a...
متن کاملThe Molar Extinction Coefficient of 2,6-dichlorophenol Indophenol.
Widely varying values for the molar extinction coefficient of 2.6-dichlorophenoi indophenol have been reported by various workers 1-9. A possible source of this variation may be the different samples of DCIP used, due either ~o the presence of impurities or to the presence of mixtures of the anhydrous and hydrated forms of DCIP sodium salt. However. failure to realise that DCIP is a weak acid w...
متن کاملComparison of Ferricyanide and 2,3',6-Trichlorophenol Indophenol as Hill Reaction Oxidants.
1. ARNON, D. I. Copper enzymes in isolated chloroplasts. Polyphenol oxidase in Beta uulgaris. Plant Physiol. 24: 1-15. 1949. 2. ARNON, D. I., ALLEN, M. B., and WHATLEY. F. R. Photosynthesis by isolated chloroplasts. IV. General concept and comparison of three photochemical reactions. Biochim. Biophys. Acta 20: 449-461. 1956. 3. ARNON, D. I., WHATLEY, F. R. and ALLEN, M. B. Assimilatory power in...
متن کاملCarbon dioxide and the reduction of indophenol and ferricyanide by chloroplasts.
Pea chloroplasts isolated in salt media show decreased rates of 2:6 dichlorophenolindophenol (DCPIP) and ferricyanide reduction when depleted of CO(2) at pH values below 7.5. The greatest effect of CO(2) was on uncoupled systems. The incorporation of 10(-2), 2 x 10(-2) and 4 x 10(-2)m sodium acetate into the reaction mixtures progressively increased the bicarbonate concentration required for ha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1931
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.17.1.1