Ammonium ion sensor based on SiO2/ZrO2/phosphate-NH4+ composite for quantification of ammonium ions in natural waters
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Development and Validation of an Ion Chromatography Method for Quantification of Ammonium Ions in STEALTH® Liposomes
Ammonium sulfate is one of the subsidiary components in the stealth liposome structure. The ratio of ammonium ion bound to liposome sphere to ammonium ions outside the liposome plays an important role in drug delivery formulation; accordingly, in order to quantify the ammonium ion in the liposome structure, a rapid and sensitive method was validated using a conductivity detector. Through this m...
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The NH4-Digiscan is an in situ analyzer designed for measuring ammonium in estuarine, coastal, and shelf waters at depths of less than 3 m. This wet chemical analyzer uses micro-solenoid pumps to propel sample and reagents, a gas diffusion cell to isolate the analyte from the matrix, and a conductivity detector for analyte detection. Instrument measurements are stable for deployments of at leas...
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Ammonium and Rubidium Ions
Chantrenne, H. (1951). J. biol. Chem. 188, 227. Drysdale, G. R. & Lardy, H. A. (1953). J. biol. Chem. 202, 119. Jowett, M. & Quastel, J. H. (1935). Biochem. J. 29, 2143. Lang, K. & Bassler, K. H. (1953). Klin. W8chr. 81, 675. Lipmann, F. & Tuttle, L. C. (1945). J. biol. Chem. 161, 415. Lipmann, F. & Tuttle, L. C. (1950). Biochim. biophy8. Acta, 4, 301. Mahler, H. R., Wakil, S. J. & Bock, R. M. ...
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Miniature endplate currents, recorded from voltage-clamped toad sartorius muscle fibers in solutions containing ammonium ions substituted for sodium ions, were increased in amplitude and decayed exponentially with a slower time constant than in control (Na) solution. The peak conductance of miniature endplate currents was also greater in ammonium solutions. The acetylcholine null potential was ...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2007
ISSN: 0103-5053
DOI: 10.1590/s0103-50532007000100022