Wr. Knauber et al., GRADIENT GEL-ELECTROPHORETIC CHARACTERIZATION OF HUMIC SUBSTANCES ANDOF BOUND RESIDUES OF THE HERBICIDE BENTAZON, Soil biology & biochemistry, 30(7), 1998, pp. 969-973
Radioactive herbicide compounds bound to humic material were separated
by sodium dodecyl sulfate polyacrylamide gradient gel electrophoresis
(SDS-PAGGE) and detected by autoradiography. SDS-PAGGE could be appli
ed to separate humic substances according to their molecular masses, a
nd to follow their time-dependent polymerisation. Autoradiographic ana
lysis showed that the herbicide bentazon and its methyl and hydroxy de
rivatives were bound in humic substance fractions of different molecul
ar mass. (C) 1998 Elsevier Science Ltd. All rights reserved.