Produits chimiques et pharmaceutiquesPhénomènes et processusDisciplines et professionsSanté
Substances HumiquesSolid WasteCourant EauSolPolluants Du SolAdsorptionAlimentation En EauEau DouceSédiment Géologique

Complexation of arsenite with humic acid in the presence of ferric iron. (57/118)

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Molecular structure of humin and melanoidin via solid state NMR. (58/118)

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Effect of Tris-HCl buffer on DNA adsorption by a variety of soil constituents. (59/118)

We investigated the effect of tris(hydroxymethyl)aminomethane hydrochloride (Tris-HCl) buffer (pH 7.0) as a bulk solution on the adsorption of DNA by gibbsite, goethite, montmorillonite, kaolinite, synthetic and natural allophanes, two humic acids and two andosols. The natural allophane, gibbsite, kaolinite and an andosol adsorbed significantly more DNA in a 0.1 M Tris-HCl buffer than in a 0.1 M NaCl solution (t-test, P<0.005). In contrast, montmorillonite adsorbed significantly less DNA in the Tris-HCl than NaCl solution (P<0.05). Care should be taken when using Tris-HCl in studies on the adsorption of extracellular DNA molecules by soil particles.  (+info)

Moorella humiferrea sp. nov., a thermophilic, anaerobic bacterium capable of growth via electron shuttling between humic acid and Fe(III). (60/118)

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Aggregation kinetics of citrate and polyvinylpyrrolidone coated silver nanoparticles in monovalent and divalent electrolyte solutions. (61/118)

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High lytic infection rates but low abundances of prokaryote viruses in a humic lake (Vassiviere, Massif Central, France). (62/118)

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Humic acid-oxidizing, nitrate-reducing bacteria in agricultural soils. (63/118)

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Comparing the heterogeneity of copper-binding characteristics for two different-sized soil humic acid fractions using fluorescence quenching combined with 2D-COS. (64/118)

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