Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Jerry A. Leenheer"'
Considerações sobre os processos de sedimentação na água preta ácida do rio Negro (Amazônia Central)
Publikováno v:
Acta Amazonica, Vol 10, Iss 2, Pp 343-357 (1980)
Resumo A morfologia alongada e estreitada das ilhas fluviais chamadas de arquipélago das Anavilhanas, encontrado no baixo rio Negro, sugerem processos de sedimentação que diferem de outros tributários do Amazonas, que têm ilhas fluviais na forma
Externí odkaz:
https://doaj.org/article/d874230e5b9747b6a5eb3da314228b12
Autor:
Jerry A. Leenheer
Publikováno v:
Acta Amazonica, Vol 10, Iss 3, Pp 513-526 (1980)
Abstract Humic substances dissolved in "black water, white water, and clear water" rivers of the Amazon River basin were compared were humic substances found in podzolic (spodic) and latosolic (oxic) soils of the Amaon region. Humic-type organic solu
Externí odkaz:
https://doaj.org/article/108e2d02bc6e4d38a418ec0ef1f9ea3d
This book demonstrates the usefulness of NMR spectroscopy for a wide variety of applications in environmental science and technology. It contains a wealth of information relating to instrumentation, sample preparation, and data interpretation. The bo
Publikováno v:
Journal - American Water Works Association. 99:118-131
Publikováno v:
Environmental Science & Technology. 41:393-399
Fogwater collected during winter in Fresno (CA) was characterized by isolating several distinct fractions and characterizing them by infrared and nuclear magnetic resonance (NMR) spectroscopy. More than 80% of the organic matter in the fogwater was r
Autor:
Jerry A. Leenheer, Colleen E. Rostad
Publikováno v:
Analytica Chimica Acta. 523:269-278
Effects of methylation, molar response, multiple charging, solvents, and positive and negative ionization on molecular weight distributions of aquatic fulvic acid were investigated by electrospray ionization/mass spectrometry. After preliminary analy
Publikováno v:
Biogeochemistry. 69:125-141
Polar dissolved organic matter (DOM) was isolated from a surface-water sample from the Great Salt Lake by separating it from colloidal organic matter by membrane dialysis, from less-polar DOM fractions by resin sorbents, and from inorganic salts by a
Publikováno v:
Environmental Science & Technology. 37:2323-2331
13C NMR analyses of hydrophobic dissolved organic matter (DOM) fractions isolated from a landfill leachate contaminated groundwater near Norman, OK; the Colorado River aqueduct near Los Angeles, CA; Anaheim Lake, an infiltration basin for the Santa A
Autor:
Jean-Philippe Croué, Jerry A. Leenheer
Publikováno v:
Environmental Science & Technology. 37:18A-26A
Publikováno v:
Environmental Science & Technology. 35:4805-4816
This investigation into the occurrence, character, and transformation of dissolved organic matter (DOM) in treatment wetlands in the western United States shows that (i) the nature of DOM in the source water has a major influence on transformations t