Results 121 to 130 of about 215,852 (161)

First-order and pseudo-first-order elimination kinetics

Science of The Total Environment, 1991
There is evidence that, for a number of chemicals, the elimination characteristics during bioconcentration do not follow monophasic first-order kinetics. In the first part of the present communication, a simple mathematical formula is presented that allows a clear-cut distinction between monophasic (pseudo-) and first-order and morephasic or higher ...
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Pseudo first-order kinetics

Journal of Chemical Education, 1972
A kinetic study of second-order reactions under first-order conditions can yield accurate second-order rate constants provided an empirical allowance is made for the depletion of the reactant in ex...
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What’s wrong with Lagergreen pseudo first order model for adsorption kinetics?

Chemical Engineering Journal, 2016
Abstract Adsorption processes can be modeled on the basis of phenomenological principles using conservation, equilibrium and transport kinetics equations. However many times an empirical approach is followed using pseudo first order and pseudo second order models to describe adsorption kinetics.
Rodrigues, Alirio E., Silva, Carlos Manuel   +1 more
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Simulation of 1,3-dichloropropene in topsoil with pseudo first-order kinetics

Journal of Contaminant Hydrology, 1995
Abstract For fast-degraded chemicals such as 1,3-dichloropropane (1,3-D), their long persistent time in topsoils cannot be explained by the ordinary first-order kinetics of biodegradation that is commonly used in the simulation of chemical transport in soils.
Pengzhi Lin, Clark C.K. Liu, Richard E. Green, Randi Schneider   +3 more
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Exact Asymptotic Relaxation of Pseudo-First-Order Reversible Reactions

Physical Review Letters, 1997
The relaxation kinetics of the diffusion-influenced reversible reaction $A+B\ensuremath{\rightleftharpoons}C$ is studied in the pseudo-first-order limit $([B]\ensuremath{\gg}[A])$ when A and C are static and the B's move independently with diffusion coefficient D. For the initial condition $[A(0)]\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$, $[
Wolfgang Naumann, Nikolai V. Shokhirev, Attila Szabo   +2 more
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Square wave voltammetry for a pseudo-first-order catalytic process

Analytical Chemistry, 1986
Donnees theoriques et cas des systemes redox catalytiques Ti 3+ /ClO 3 − , Ti 3+ /NH 2 OH et Fe 2+ /NH 2 ...
Jilin. Zeng, Robert A. Osteryoung
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A pseudo first-order-second-order kinetics experiment: An illustration of the Guggenheim method

Journal of Chemical Education, 1964
The rate of one of the typical reactions of the aromatic nitroso group is determined spectrophotometrically employing the Guggenheim method.
Mushlaq Ahmad, Jan Hamer
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Enhanced Kinetics of Pseudo First-Order Hydrolysis in Liquid Phase Coexistent with Ice

The Journal of Physical Chemistry A, 2013
The reaction rate of the hydrolysis of fluorescein diacetate (FDA) is several times larger in the frozen state than that in the unfrozen solution of the same composition at the same temperature. The freeze concentration of reactants in the liquid phase expelled form ice crystals cannot explain the kinetic enhancement of pseudo first order reactions ...
Kenji Anzo, Makoto Harada, Tetsuo Okada
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Pseudo-first-order phase transitions in one dimension

Journal of Physics A: Mathematical and General, 1979
A study is made of the one-dimensional Ginzburg-Landau system with a cubic term, a model of the first-order phase transition. Fluctuations are taken into account by means of the WKB method. It is pointed out that the transition is of continuous type for any value of the coefficient of the cubic term.
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Pseudo First-Order Adsorption Kinetics of N719 Dye on TiO₂ Surface

ACS Applied Materials & Interfaces, 2011
We have investigated the adsorption kinetics of Ru-based N719 dye on TiO(2) surface in dye-sensitized solar cell using 0.5 mM and 5 mM dye solutions. The amount of adsorbed dye on TiO(2) surface of ca. 5 μm-thick film was measured as a function of immersion (adsorption) time.
Chang-Ryul, Lee, Hui-Seon, Kim, In-Hyuk, Jang, Jeong-Hyeok, Im, Nam-Gyu, Park   +4 more
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