Pedosphere 6(3): 269--276, 1996
ISSN 1002-0160/CN 32-1315/P
©1996 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Zero point of charge of organo-mineral complexes
M. T. ANSARI, XU Jian-Ming and YUAN Ke-Neng
Zhejiang Agricultural University, Hangzhou 510029 (China)
      Five soil samples collected from China and two soil samples from Pakistan with widely different origin and characteristics were used to study the zero point of charge (ZPC) of soil colloids. The results showed that the value of zero point of charge of H-clay complexes was lower than that of H-clays in all the samples. Natural clay complexes had the highest ZPC as compared to H-clay complex and H-clay in alfisol, closer to H-clays rather than H-clay complexes in oxisol and udult. The delta value of ZPT (zero point of titration) to ZPC was higher in H-clay complexes than in H-clays.
Key Words:  organo-mineral complexes, soil colloids, zero point of charge
Citation: Ansari, M. T., Xu, J. M. and Yuan, K. N. 1996. Zero point of charge of organo-mineral complexes. Pedosphere. 6(3): 269-276.
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