Conductimetric analysis of the ion binding properties of three leaf extracts of chestnut (Castanea sativa), Eucalyptus (Eucalyptus globulus) and oak (Quercus robur)

F. Rey; M. Pérez-Asenjo; A. A.S.C. Machado; P. Facal; M. A. Ferreira; A. Toja

doi:10.1016/0039-9140(95)01663-5

Conductimetric analysis of the ion binding properties of three leaf extracts of chestnut (Castanea sativa), Eucalyptus (Eucalyptus globulus) and oak (Quercus robur)

F. Rey, M. Pérez-Asenjo, A. A.S.C. Machado, P. Facal, M. A. Ferreira, A. Toja

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Humic materials extracted from tree leaves of chestnut (Castanea sativa), eucalyptus (Eucalyptus globulus) and oak (Quercus robur) were analyzed by performing conductimetric titrations. Values between about 84 and 236 μS cm^-1 for the molar conductivity and between 0.42 and 0.74 for the charge distribution parameter were obtained when the concentrations of the extract are increased from 40 to 100 mg 1^-1. These variations were explained by using the counterion condensation theory, and the distance between the charged groups of the polyions, the volume of the counterion condensation and the Debye-Hückel potential were also calculated.

Original language	English
Pages (from-to)	1919-1923
Number of pages	5
Journal	Talanta
Volume	42
Issue number	12
DOIs	https://doi.org/10.1016/0039-9140(95)01663-5
Publication status	Published - Dec 1995
Externally published	Yes

Keywords

Conductimetry
Humic acids
Leaf extract

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title = "Conductimetric analysis of the ion binding properties of three leaf extracts of chestnut (Castanea sativa), Eucalyptus (Eucalyptus globulus) and oak (Quercus robur)",

abstract = "Humic materials extracted from tree leaves of chestnut (Castanea sativa), eucalyptus (Eucalyptus globulus) and oak (Quercus robur) were analyzed by performing conductimetric titrations. Values between about 84 and 236 μS cm-1 for the molar conductivity and between 0.42 and 0.74 for the charge distribution parameter were obtained when the concentrations of the extract are increased from 40 to 100 mg 1-1. These variations were explained by using the counterion condensation theory, and the distance between the charged groups of the polyions, the volume of the counterion condensation and the Debye-H{\"u}ckel potential were also calculated.",

keywords = "Conductimetry, Humic acids, Leaf extract",

author = "F. Rey and M. P{\'e}rez-Asenjo and Machado, {A. A.S.C.} and P. Facal and Ferreira, {M. A.} and A. Toja",

year = "1995",

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doi = "10.1016/0039-9140(95)01663-5",

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T1 - Conductimetric analysis of the ion binding properties of three leaf extracts of chestnut (Castanea sativa), Eucalyptus (Eucalyptus globulus) and oak (Quercus robur)

AU - Rey, F.

AU - Pérez-Asenjo, M.

AU - Machado, A. A.S.C.

AU - Facal, P.

AU - Ferreira, M. A.

AU - Toja, A.

PY - 1995/12

Y1 - 1995/12

N2 - Humic materials extracted from tree leaves of chestnut (Castanea sativa), eucalyptus (Eucalyptus globulus) and oak (Quercus robur) were analyzed by performing conductimetric titrations. Values between about 84 and 236 μS cm-1 for the molar conductivity and between 0.42 and 0.74 for the charge distribution parameter were obtained when the concentrations of the extract are increased from 40 to 100 mg 1-1. These variations were explained by using the counterion condensation theory, and the distance between the charged groups of the polyions, the volume of the counterion condensation and the Debye-Hückel potential were also calculated.

AB - Humic materials extracted from tree leaves of chestnut (Castanea sativa), eucalyptus (Eucalyptus globulus) and oak (Quercus robur) were analyzed by performing conductimetric titrations. Values between about 84 and 236 μS cm-1 for the molar conductivity and between 0.42 and 0.74 for the charge distribution parameter were obtained when the concentrations of the extract are increased from 40 to 100 mg 1-1. These variations were explained by using the counterion condensation theory, and the distance between the charged groups of the polyions, the volume of the counterion condensation and the Debye-Hückel potential were also calculated.

KW - Conductimetry

KW - Humic acids

KW - Leaf extract

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DO - 10.1016/0039-9140(95)01663-5

M3 - Article

AN - SCOPUS:0029200223

SN - 0039-9140

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SP - 1919

EP - 1923

JO - Talanta

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ER -

Conductimetric analysis of the ion binding properties of three leaf extracts of chestnut (Castanea sativa), Eucalyptus (Eucalyptus globulus) and oak (Quercus robur)

Abstract

Keywords

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