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Zero point of charge and electrical charges determination in the Ap horizon of soils from the State of Paraiba, Brazil


, : Zero point of charge and electrical charges determination in the Ap horizon of soils from the State of Paraiba, Brazil. Revista Brasileira de Ciencia do Solo 16(3): 415-418

Electrical charges in the Ap horizon of six soils from Paraiba, Brazil, were studied by the potentiometric titration method using three KCl concentrations. The Zero Point of Charge (ZPC) was obtained from the point of intersection of the three curves.


Accession: 002549072

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Related references

Chaves L.H.G.; Trajano M.D.M., 1992: The zero point of charge and determining the electrical charges in the Ap horizon of soils in the State of Paraiba. Revista Brasileira de Ciencia do Solo 16(3): 415-418

Fernandes,J.D.; Chaves,L.H.G.; Oliveira,F.H.T.de; Farias,D.R.de, 2008: Point of zero salt effect and electrical charge of soils from Paraiba State, Brazil. The soil fertility and plant nutrition are influenced by electrochemical reactions occurring on the surface of soil colloids. The point of zero salt effect (PZSE) is an important parameter to study the surface charge of those colloids, since, it a...

Magalhaes, A.F.; Page, A.L., 1984: Charge characteristics of soils from the coastal region of Pernambuco (Brazil). I. Determination of surface charges. The surface charge properties of samples from the A and B horizons of seven soils from the coastal region of Pernambuco were determined by the potentiometric titration and ion adsorption (Schofield) methods. The ZPC values determined by potentiome...

Farias,C.H.deA.; Oliveira,G.S.de; Sousa,F.L.de; Tomaz,H.V.deQ.; Silva,P.C.M.da, 2008: Saturation for aluminum and its spatial variability in the first horizon in coastal meadow in Paraiba State - Brazil. The work was accomplished in Santa Luzia Farm in the municipal district of Cruz do Spirit Saint, PB. Located in the coordinates Lat 6 degrees 56'52.21"S and Log 35 degrees 7'57.01"O with the objective of verifying the spatial v...

H.J.Zheng; Tan WenFeng; Liu Fan; Yang ZeYuan, 1995: Preliminary study on the point of zero charge in soils with variable charges. The point of zero charge (PZC) in samples of brown red soil, red soil, lateritic red soil, and latosol with variable charges collected from Hubei, China was determined with potential titration (PT), salt titration (ST), and salt titration potentia...

Anonymous, 1972: Exploratory-examinatory survey of soils in the state of Paraiba. II. Interpretation for the agricultural use of soils in the state of Paraiba

Magalhaes, A.F.; Page, A.L., 1984: Charge characteristics of soils from the coastal region of Pernambuco (Brazil). II. Comparative evaluation of methods for determining zero point charge. Three methods (Schofield, potentiometric titration and equilibrium) for the determination of surface charge and ZPC were comparatively evaluated in seven soils (A and B horizons) of the coastal region of Pernambuco. Good agreement between the nega...

Liu DongBi; H.J.Zheng; Liu Fan; L.X.eYuan, 1999: Surface charge characteristics of soils in central and southern China. III. Charge amount, point of zero charge (PZC) and point of zero net charge (PZNC). Charge amount, point of zero charge (PZC), point of zero net charge (PZNC), the relationships among the above surface charge properties, and the composition of 3 types of soils from central and southern China were studied. Results showed that: fro...

Leite, J.A.; Cavalcante, L.F.; Medina, B.F.; Montenegro, J.O., 1982: Erodibility factor of four soils from the Municipality of Sao Mamede, Paraiba State, Brazil. Erodibility, expressed as K values (given in brackets), was in the following order: vertic non-calcic brown soil and non calcic brown soil (0.29), red yellow podzolic soil (0.26), and lithosol (0.18).

Leite J.A.; Cavalcante L.F.; Medina B.F.; Montenegro J.O., 1982: Erodibility factor of 4 soils from the municipality of sao mamede paraiba state brazil. Based on physical properties, the K values (erodibilities) were determined by using the universal soil loss equation (Wischmeier nomogram). The Vertic Non-calcic brown and Non-calcic brown are more sensitive to erosion, with K values from 0.29. Th...