Extraction of humic acids from a natural matrix by alkaline pyrophosphate. Evaluation of the molecular weight of fractions obtained by ultrafiltration

Fresenius' Journal of Analytical Chemistry

Volumn 359, Issue 7-8, 1997, Pages 555-560

  Tonelli, Domenica ^a   Seeber, Renato ^a   Ciavatta, Claudio ^a   Gessa, Carlo ^a  

^a UNIVERSITY OF BOLOGNA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000194925     PISSN: 09370633     EISSN: None     Source Type: Journal    
DOI: 10.1007/s002160050631     Document Type: Article

References (14)

1. Bohn HL (1976) Soil Sci Am J 40:468
2. Ajtay GL, Ketner P, Duvugneaud P (1979) In: The Global Carbon Cycle. Bolen B, Degens ET, Kempe S, Ketner P (eds) Wiley, Chichester, p 129
3. Hayes MHB, Swift RS (1983) In: The Chemistry of Soil Constituents. Greenland DJ, Hayes MH (eds) Wiley, Chichester, p 179
4. Aiken GR, McKnight DM, Wershaw RL, MacCarthy P (1985) In: Humic Substances in Soil, Sediment, and Water. Aiken GR, McKnight DM, Wershaw RL, MacCarthy P (eds) Wiley, New York, p 1
5. Hayes MHB, MacCarthy P, Malcomb RL, Swift RS (1989) In: Humic Substances. II. In Search of Structure. Hayes MHB, MacCarthy P, Malcomb RL, Swift RS (eds) Wiley, Chichester, p 3
6. De Nobili M, Gjessing E, Sequi P (1989) Sizes and Shapes of Humic Substances by Gel Chromatography. In: Humic Substances. II. In Search of Structure Hayes MHB, MacCarthy P, Malcomb RL Swift RS (eds) Wiley, Chichester, p 561
7. Tan KH (1986) Degradation of Soil Minerals by Organic Acids. In: Interactions of Soil Minerals with Natural Organics and Microbs. Huang PM, Schnitzer M (eds) Soil Science Society of America, Inc, Madison, p 1
8. Swift RS (1989) Molecular Weight, Size, Shape and Charge Characteristics of Humic Substances: Some Basic Considerations. In: Humic Substances. II. In Search of Structure. Hayes MHB, MacCarthy P, Malcomb RL, Swift RS (eds) Wiley, Chichester, p 450
9. Powell HKJ, Town RM (1992) Anal Chim Acta 267:47, and refs. therein
10. Ciavatta C, Govi M (1993) J Chromatogr 643:261
11. Ghosh K, Schnitzer M (1980) Soil Sci 129:266
12. Murphy J, Riley JP (1962) Anal Chim Acta 27:31
13. Schnitzer M (1986) Binding of Humic Substances by Soil Mineral Colloids. In: Interactions of Soil Minerals with Natural Organics and Microbs. Huang PM, Schnitzer M (eds) Soil Science Society of America, Inc. Madison, p 77
14. Town RM, Powell HKJ (1992) Anal Chim Acta 256:81