%0 Journal Article %1 Aguer:2001p268 %A Aguer, J %A Trubetskaya, O %A Trubetskoj, O %A Richard, C %D 2001 %J Chemosphere %K imported %N 2 %P 205--209 %T Photoinductive properties of soil humic acids and their fractions obtained by tandem size exclusion chromatography-polyacrylamide gel electrophoresis %U http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000169537800012 %V 44 %X Humic acids (HAs) from three soils of different origin (Chernozem, Ferralsol and Ranker) have been fractionated by coupling size exclusion chromatography (SEC) and polyacrylamide gel electrophoresis (PAGE) on three fractions (fractions A, B, C + D) with different molecular sizes (MSs) and exactly defined electrophoretic mobility (EM). Fractions identically marked had similar EM and MS, independently of HA sources. The photoinductive properties of the whole HAs and their fractions were compared by studying the photoinduced transformation of fenuron at 365 nm. High MS fractions A and B appeared to exhibit poor photoinductive activities compared to the whole HAs, whereas low MS fraction C+D in Chernozem and Ranker were more efficient than the whole HAs. A fourth intermediary fraction containing a mixture of fractions B and C + D with small amount of D was shown to photoinduce poorly the transformation of fenuron. It was therefore concluded that the molecules capable of photoinducing the transformation of fenuron were mainly contained in fraction D. Fluorescence properties of Chernozem HA and its fractions have been tested. Fraction C + D exhibited a very similar fluorescence emission spectrum in comparison with the whole HA and in contrast, the fractions A and B emitted very weakly. (C) 2001 Elsevier Science Ltd. All rights reserved. %Z Times Cited: 4 Article English Cited References Count: 10 446wu

@article{Aguer:2001p268, abstract = {Humic acids (HAs) from three soils of different origin (Chernozem, Ferralsol and Ranker) have been fractionated by coupling size exclusion chromatography (SEC) and polyacrylamide gel electrophoresis (PAGE) on three fractions (fractions A, B, C + D) with different molecular sizes (MSs) and exactly defined electrophoretic mobility (EM). Fractions identically marked had similar EM and MS, independently of HA sources. The photoinductive properties of the whole HAs and their fractions were compared by studying the photoinduced transformation of fenuron at 365 nm. High MS fractions A and B appeared to exhibit poor photoinductive activities compared to the whole HAs, whereas low MS fraction C+D in Chernozem and Ranker were more efficient than the whole HAs. A fourth intermediary fraction containing a mixture of fractions B and C + D with small amount of D was shown to photoinduce poorly the transformation of fenuron. It was therefore concluded that the molecules capable of photoinducing the transformation of fenuron were mainly contained in fraction D. Fluorescence properties of Chernozem HA and its fractions have been tested. Fraction C + D exhibited a very similar fluorescence emission spectrum in comparison with the whole HA and in contrast, the fractions A and B emitted very weakly. (C) 2001 Elsevier Science Ltd. All rights reserved.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Richard, C. Univ Clermont Ferrand 2, Photochim Mol {\&} Macromol Lab, CNRS, UMR 6505, F-63177 Clermont Ferrand, France Univ Clermont Ferrand 2, Photochim Mol {\&} Macromol Lab, CNRS, UMR 6505, F-63177 Clermont Ferrand, France Russian Acad Sci, Branch Shemyakin {\&} Ovchinnikov Inst Bioorgan Chem, Pushchino 142292, Moscow Region, Russia Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142292, Moscow Region, Russia}, annote = {Times Cited: 4 Article English Cited References Count: 10 446wu}, author = {Aguer, J and Trubetskaya, O and Trubetskoj, O and Richard, C}, biburl = {https://www.bibsonomy.org/bibtex/2697a87e039df3e1c936275e353650c00/gsmith}, date-added = {2010-03-10 16:47:09 -0500}, date-modified = {2010-03-24 13:50:55 -0400}, interhash = {5a713fee10b00ed441d8f63a59dd908c}, intrahash = {697a87e039df3e1c936275e353650c00}, journal = {Chemosphere}, keywords = {imported}, label = {rec-number 815}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Chemosphere/2001/Chemosphere,%2044,%20205-209%202001.pdf}, month = Jul, number = 2, pages = {205--209}, pmid = {000169537800012}, rating = {0}, timestamp = {2010-06-22T19:39:03.000+0200}, title = {Photoinductive properties of soil humic acids and their fractions obtained by tandem size exclusion chromatography-polyacrylamide gel electrophoresis}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p268}, url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000169537800012}, volume = 44, year = 2001 }