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Modeling the rate of cadmium and selenite adsorption on micro- and mesoporous transition aluminas

Article Abstract:

The transport of cadmium and selenite in porous and alumina particles with different particle size was studied. Experiments were performed wherein the rates of cadmium and selenite uptakeof three transition aluminas were measured. The measured values were further analyzed by means of a rate diffusion model. Results indicate that the uptake behavior of the transition aluminas are influenced by their physical and chemical characteristics, such as pore structure, particle size and crystal structure.

Author: Roberts, Paul V., Leckie, James O., Papelis, Charalambos
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
Analysis, Environmental aspects, Pollutants, Cadmium, Adsorption, Aluminum oxide

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Dermal exposure: the missing link

Article Abstract:

The Food Quality Protection Act of 1996 recognizes that dermal exposure plays a crucial part in the total well-being of individuals. The law requires the Environmental Protection Agency to consider total exposure, including dermal exposure, to obtaoin a complete human health risk model. Dermal route research, however, have largely focused on dermal dose or the uptake or absorption of a chemical through the skin.

Author: Leckie, James O., Zartarian, Valerie G.
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
Research and Development in the Physical, Engineering, and Life Sciences, Research and Testing Services, Health Research NEC, Methods, Laws, regulations and rules, Medical research, United States. Environmental Protection Agency, Health risk assessment

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Kinetics of oxidation of selenite to selenate in the presence of oxygen, titania, and light

Article Abstract:

Equilibrium surface reactions in selenite were analyzed to gain an insight into the kinetic processes during oxidation. The results showed that selenite is oxidized as a charged surface-adsorbed species and that selenate does not have an adverse effect on surface quality. Oxygen is reduced as a neutral surface-adsorbed species and the rate of oxidation is not a simple function of pH.

Author: Davis, James A., Gruebel, Karen A., Leckie, James O.
Publisher: American Chemical Society
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
Oxidation-reduction reaction, Oxidation-reduction reactions

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Subjects list: Research, Selenite
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