Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Appathurai Vairavamurthy"'
Autor:
Daniel E. Schwarz, Anatoly I. Frenkel, Appathurai Vairavamurthy, Thomas B. Rauchfuss, Ralph G. Nuzzo
Publikováno v:
Chemistry of Materials. 16:151-158
Solutions of ReS4- undergo electro-oxidation at 0.5 V vs Ag|AgCl to give black, amorphous ReS4 via a process that can be reversed at −0.9 V. The oxidative polymerization can also be effected chemically using either I2 or ferrocenium as oxidants. X-
Publikováno v:
Canadian Journal of Soil Science. 81:337-348
Humic acids (HA) constitute a major fraction of the organic matter in soils and sediments. Little is known about the kinetics and mechanisms of Cd sorption by HAs, especially those pertaining to the surface features and structure of the Cd-humate com
Publikováno v:
Geochimica et Cosmochimica Acta. 58:4681-4687
X-ray absorption near-edge structure spectroscopy (XANES) used to measure sulfur speciation in a variety of organic-rich marine sediments has established sulfonates as a novel and major component of sedimentary organic sulfur. The origins of sulfonat
Publikováno v:
Geochimica et Cosmochimica Acta. 57:1619-1623
Disproportionation of thiosulfate is an important pathway in bacterial energy metabolism in anoxic sediments. It has been described as an inorganic fermentation process in which a part of the molecule is oxidized to sulfate, while the other stoichiom
Publikováno v:
Geophysical Research Letters. 19:2043-2046
Inorganic polysulfides (S[sub n][sup 2[minus]], where n > 1) contribute to the incorporation of sulfur into organic matter in reducing sediments, especially when conditions exist for partial oxidation of sulfide. Inorganic polysulfides have been assu
Publikováno v:
Atmospheric Environment. Part A. General Topics. 26:1965-1993
Determination of carbonyl compounds in the ambient atmosphere is receiving increasing attention because of the critical role these compounds play in tropospheric organic chemistry. Currently, field measurements are very limited mainly because of the
Publikováno v:
Analytica Chimica Acta. 236:363-370
Derivatization with 2,2′-dithiobis(5-nitropyridine) (DTNP) was used to stabilize thiols in field samples and to determine these compounds by liquid chromatography (LC) with ultraviolet detection. Alternatively, the thiols can be regenerated from DT
Publikováno v:
Analytica Chimica Acta. 237:215-221
A gas chromatographic method was developed for the determination of low-molecular-weight carboxylic acids in aqueous samples based on a derivatization procedure compatible with aqueous solutions. The technique uses nitrogen-selective detection with a
Autor:
Daniel E. Schwarz, Thomas B. Rauchfuss, Ralph G. Nuzzo, Anatoly I. Frenkel, Appathurai Vairavamurthy
Publikováno v:
ChemInform. 35
Solutions of ReS4- undergo electro-oxidation at 0.5 V vs Ag|AgCl to give black, amorphous ReS4 via a process that can be reversed at −0.9 V. The oxidative polymerization can also be effected chemically using either I2 or ferrocenium as oxidants. X-
Publikováno v:
Journal of synchrotron radiation. 8(Pt 2)
Using EXAFS, we investigated the changes in the local structure of Cd(II) complexes formed with a series of low-molecular-weight thiols at different thiol/cadmium stoichiometries. For dilute solutions, a comparison of theoretical and experimental sta