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Photodesorption of fulvic acid from iron oxide surfaces into aqueous solutions
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad Fysik.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi, Organisk Analytisk Kemi.
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden Linkoping Univ, Dept Water & Environm Studies, S-58183 Linkoping, Sweden.
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2001 (engelsk)Inngår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 174, nr 2, s. 166-175Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Photodesorption of thin films of fulvic acid adsorbed on planar iron oxide surfaces was monitored by ellipsometry. Description was first observed at 546 nm, and additional fractions of the adsorbed acid left the surfaces at 405 and 365 nm Similar kinetics for photodesorption was observed from metallic iron films and from porous iron oxide prepared electrochemically by deposition on porous silicon substrates. Soluble photoproducts leaving the surface H ere monitored by UV absorbance spectroscopy at 200 nm Gaseous products were not detected by mass spectrometry but the results seemed to indicate that net all of the photoproducts entered the liquid phase. Of the metal films tested which adsorbed fulvic acid from aqueous solution (Fe. Cr, Ni, Al, and Pt), it was only iron which exhibited a photodesorption effect. (C) 2001 Elsevier Science B.V. All rights reserved.

sted, utgiver, år, opplag, sider
2001. Vol. 174, nr 2, s. 166-175
Emneord [en]
fulvic acid, adsorption, photodesorption, ellipsometry
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URN: urn:nbn:se:liu:diva-49304OAI: oai:DiVA.org:liu-49304DiVA, id: diva2:270200
Tilgjengelig fra: 2009-10-11 Laget: 2009-10-11 Sist oppdatert: 2017-12-12

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Bjorklund, RobertKarlsson, SusanneBorén, HansLundström, Ingemar

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