Humic substances : structures, properties and uses : [the proceedings of the second Humic Substances Seminar held on 27 March 1998 at the Northeastern University, Boston, Massachusetts

The properties of humic substances (HSs) in plants, soils and sediments regulate the environment and affect all aspects of like, yet they are only very imprecisely understood. This volume presents work on HSs including instruments and techniques being developed to throw more light on their structure and relationship to macro- and micro-scopic properties. Content: Front Matter , Page iii Copyright , Page iv Inside Front Cover , Page v Preface , Pages vii-x , Geoffrey Davies, Elham A. Ghabbour HUMIC SUBSTANCES: PROGRESS TOWARDS MORE REALISTIC CONCEPTS OF STRUCTURES , Pages 1-27 , M.H.B. Hayes USE OF 13 C NMR AND FTIR FOR ELUCIDATION OF DEGRADATION PATHWAYS DURING NATURAL LITTER DECOMPOSITION AND COMPOSTING. II. CHANGES IN LEAF COMPOSITION AFTER SENESCENCE , Pages 29-46 , Robert L. Wershaw, Kay R. Kennedy, James E. Henrich USE OF 13 C NMR AND FTIR FOR ELUCIDATION OF DEGRADATION PATHWAYS DURING NATURAL LITTER DECOMPOSITION AND COMPOSTING. III. CHARACTERIZATION OF LEACHATE FROM DIFFERENT TYPES OF LEAVES , Pages 47-60 , Robert L. Wershaw, Jerry A. Leenheer, Kay R. Kennedy USE OF 13 C NMR AND FTIR FOR ELUCIDATION OF DEGRADATION PATHWAYS DURING NATURAL LITTER DECOMPOSITION AND COMPOSTING. IV. CHARACTERIZATION OF HUMIC AND FULVIC ACIDS EXTRACTED FROM SENESCENT LEAVES , Pages 61-68 , Robert L. Wershaw, Kay R. Kennedy CHARACTERIZATION AND PROPERTIES OF HUMIC SUBSTANCES ORIGINATING FROM AN ACTIVATED SLUDGE WASTEWATER TREATMENT PLANT , Pages 69-78 , Benny Chefetz, Jorge Tarchitzky, Naama Benny, Patrick G. Hatcher, Jacqueline Bortiatynski, Yona Chen STRUCTURE AND ELEMENTAL COMPOSITION OF HUMIC ACIDS: COMPARISON OF SOLID-STATE 13 C NMR CALCULATIONS AND CHEMICAL ANALYSES , Pages 79-90 , J. Mao, W. Hu, K. Schmidt-Rohr, G. Davies, E.A. Ghabbour, B. Xing COMPARISON OF DESORPTION MASS SPECTROMETRY TECHNIQUES FOR THE CHARACTERIZATION OF FULVIC ACID , Pages 91-107 , Teresa L. Brown, Frank J. Novotny, James A. Rice THE RELATIVE IMPORTANCE OF MOLECULAR SIZE AND CHARGE DIFFERENCES IN CAPILLARY ELECTROPHORESIS OF HUMIC SUBSTANCES OF DIFFERENT ORIGIN , Pages 109-112 , Maria De Nobili, G. Bragato, A. Mori FLUORESCENCE DECAY OF HUMIC SUBSTANCES. A COMPARATIVE STUDY , Pages 113-122 , Fritz H. Frimmel, Michael U. Kumke EFFECT OF LIME ADDITIONS TO LAKE WATER ON NATURAL ORGANIC MATTER (NOM) IN LAKE TERJEVANN, SE NORWAY: FTIR AND FLUORESCENCE SPECTRAL CHANGES , Pages 123-131 , James J. Alberts, Dag O. Andersen, Monika Takács A COMPUTATIONAL CHEMISTRY APPROACH TO STUDY THE INTERACTIONS OF HUMIC SUBSTANCES WITH MINERAL SURFACES , Pages 133-145 , Leonid G. Akim, George W. Bailey, Sergey M. Shevchenko DETERMINATION OF TRACE METALS BOUND TO SOIL HUMIC ACID SPECIES BY SIZE EXCLUSION CHROMATOGRAPHY AND INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY , Pages 147-163 , Peter Ruiz-Haas, Dula Amarasiriwardena, Baoshan Xing FORMATION AND VOLTAMMETRIC CHARACTERIZATION OF IRON-HUMATE COMPLEXES OF DIFFERENT MOLECULAR WEIGHT , Pages 165-171 , L. Leita, M. De Nobili, L. Catalano, A. Mori NONLINEARITY AND COMPETITIVE SORPTION OF HYDROPHOBIC ORGANIC COMPOUNDS IN HUMIC SUBSTANCES , Pages 173-183 , Baoshan Xing ADSORPTION OF A PLANT- AND A SOIL-DERIVED HUMIC ACID ON THE COMMON CLAY KAOLINITE , Pages 185-194 , E.A. Ghabbour, G. Davies, K. O'Donaughy, T.L. Smith, M.E. Goodwillie EFFECT OF DISSOLVED ORGANIC MATTER ON THE MOVEMENT OF PESTICIDES IN SOIL COLUMNS , Pages 195-201 , K.M. Spark, R.S. Swift GENERATION OF FREE RADICALS BY HUMIC ACID: IMPLICATIONS FOR BIOLOGICAL ACTIVITY , Pages 203-214 , Mark D. Paciolla, Santha Kolla, Lawrence T. Sein Jr., James M. Varnum, Damien L. Malfara, Geoffrey Davies, Elham A. Ghabbour, Susan A. Jansen HUMIC ACID AS A SUBSTRATE FOR ALKYLATION , Pages 215-225 , Santha Kolla, Mark D. Paciolla, Lawrence T. Sein Jr., John Moyer, Daman Walia, Harley Heaton, Susan A. Jansen HUMIC SUBSTANCES FOR ENHANCING TURFGRASS GROWTH , Pages 227-233 , C.E. Clapp, R. Liu, V.W. Cline, Y. Chen, M.H.B. Hayes GREENHOUSE GAS DILEMMA AND HUMIC ACID SOLUTION , Pages 235-241 , D.S. Walia, A.K. Fataftah, K.C. Srivastava Subject Index , Pages 243-259 "This book is unique in highlighting environmental processes from a molecular viewpoint, focusing on the use of chemical and physical methodology to explain this complex subject matter and emphasizing the most up-to-date research. It covers aspects of the biology, chemistry, physics and physiology of humic substance macromolecules, includes the very latest in high level molecular modelling and teaches techniques of particular relevance to agriculture and agronomy. The growing industrial use of humic substances for plant stimulation, alternative energy sources and bioremediation is also featured."--Jacket