Conformational changes of humic substances induced by some hydroxy-, keto-, and sulfonic acids

Soil Biology and Biochemistry

Volumn 33, Issue 4-5, 2001, Pages 563-571

  Cozzolino, A ^a   Conte, P ^a   Piccolo, A ^a  

^a UNIVERSITY OF NAPLES FEDERICO II   (Italy)

Author keywords

Humic substances; Molecular sizes; Organic acids; Self assembling conformations; Supramolecular associations

Indexed keywords

CARBOXYLIC ACID; CARBOXYLIC ACIDS AND THEIR DERIVATIVES; CHEMICAL STRUCTURE; CHROMATOGRAPHY; DISSOLVED ORGANIC MATTER; HIGH PERFORMANCE SIZE EXCLUSION CHROMATOGRAPHY; HUMIC ACID; HUMIC SUBSTANCE; MOLECULAR SIZE; PH; STEREOCHEMISTRY; SULFONIC ACID DERIVATIVE;

HUMIC ACID; MOLECULAR ANALYSIS; ORGANIC ACID; SIZE DISTRIBUTION;

EID: 0035080967     PISSN: 00380717     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0038-0717(00)00196-6     Document Type: Article

References (32)

1. Sulfonate S. A major form of forest soil organic sulfur
2. Root excretions and their environmental effects. Influence on availability of phosphorous
3. 13C-NMR spectra of humic substances from soils of volcanic systems
4. High pressure size exclusion chromatography (HPSEC) of humic substances: Molecular sizes, analytical parameters, and column performance
5. Conformational arrangement of dissolved humic substances. Influence of solution composition on association of humic molecules
6. Macromolecular structure of humic substances
7. Dynamics of nutrient movement at the soil - Root interface
8. Auxin-like effect of humic substances extracted from faeces of Allolobophora caliginosa and Antennaria rosea
9. Biological activity of humus
10. The auxin-like effect of humic preparations from leonardite
11. Differences in carboxylic acid exudation among p-starved leguminous crops in relation to carboxylic acid contents in plant tissues and phospholipid level in roots
12. Macromolecular changes of humic substances induced by interaction with organic acids
13. Micelle-like conformation of humic substances as revealed by size exclusion chromatography
14. Conformational association of dissolved humic substances as affected by interactions with mineral and monocarboxylic acids
15. Molecular size of humic substances. Supramolecular associations versus macromolecular polymers
16. Differences in high performance size exclusion chromatography between humic substances and macromolecular polymers
17. Studies of molecular weight distribution of fulvic and humic acids by gel permeation chromatography. Examination of the solute molecular composition using RI, UV, fluorescence and weight measurement as detection techniques
18. Determination of molecular size distributions of humic acids by high-performance size exclusion chromatography
19. The influence of humic acid on the respiration of plant roots
20. Molecular weight, size, shape, and charge characteristics of humic substances: Some basic considerations
21. Occurrence of alachlor and its sulfonated metabolite in rivers and reservoirs of the midwestern United States: The importance of sulfonation in the transport of chloroacetanilide herbicides
22. The growth of wheat plants in humic acid solution under axenic conditions
23. A new model for humic materials and their interactions with hydrophobic organic chemicals in soil - Water or sediment-water systems
24. Model for humus in soils and sediments