Parameterization and regionalization of Cd sorption characteristics of sandy soils. I. Freundlich type parameters

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Günther Springob
  • Jürgen Böttcher
View graph of relations

Details

Original languageEnglish
Pages (from-to)681-687
Number of pages7
JournalJournal of Plant Nutrition and Soil Science
Volume161
Issue number6
Publication statusPublished - 1998

Abstract

Cd sorption isotherms (n = 24) were established for arable, sandy-soils of the 'Fuhrberger Feld' catchment area northeast of Hannover (Germany) using 0.01 Mc Ca(NO3)2 solution with Cd additions ranging from 0 to 44 μMc Cd. Alternative fractions of initially (prior to analysis) sorbed Cd (S0) were added to the amount sorbed during the experiments. The Freundlich equation was fitted to the resulting isotherms. The obtained retention parameters k and M varied with respect to the different S0 fractions. Isotherms corrected with CdEDTA as S0 fraction were nonlinear in their log-form. The highest degree of log-linearity is obtained if S0 is characterized by 40% of the aqua regia extractable Cd. The corresponding k values ranged from 36 to 1275 g1-M LM kg-1 (mean 338 g1-M LM kg-1, cv = 92%). The Freundlich exponent M showed less variation (0.7 to 1.1, cv = 12%) with a mean of 0.88. Functions based on these parameters predicted Cd concentrations in Ca(NO3)2-soil suspensions well (r2 = 0.96) but were hardly related to Cd concentrations of 'fresh' soil solutions (r2 = 0.20).

Keywords

    Cadmium, Freundlich parameters, Sorption isotherms

ASJC Scopus subject areas

Cite this

Parameterization and regionalization of Cd sorption characteristics of sandy soils. I. Freundlich type parameters. / Springob, Günther; Böttcher, Jürgen.
In: Journal of Plant Nutrition and Soil Science, Vol. 161, No. 6, 1998, p. 681-687.

Research output: Contribution to journalArticleResearchpeer review

Download
@article{1ebd16c0d5534cada98c663e46616ec2,
title = "Parameterization and regionalization of Cd sorption characteristics of sandy soils. I. Freundlich type parameters",
abstract = "Cd sorption isotherms (n = 24) were established for arable, sandy-soils of the 'Fuhrberger Feld' catchment area northeast of Hannover (Germany) using 0.01 Mc Ca(NO3)2 solution with Cd additions ranging from 0 to 44 μMc Cd. Alternative fractions of initially (prior to analysis) sorbed Cd (S0) were added to the amount sorbed during the experiments. The Freundlich equation was fitted to the resulting isotherms. The obtained retention parameters k and M varied with respect to the different S0 fractions. Isotherms corrected with CdEDTA as S0 fraction were nonlinear in their log-form. The highest degree of log-linearity is obtained if S0 is characterized by 40% of the aqua regia extractable Cd. The corresponding k values ranged from 36 to 1275 g1-M LM kg-1 (mean 338 g1-M LM kg-1, cv = 92%). The Freundlich exponent M showed less variation (0.7 to 1.1, cv = 12%) with a mean of 0.88. Functions based on these parameters predicted Cd concentrations in Ca(NO3)2-soil suspensions well (r2 = 0.96) but were hardly related to Cd concentrations of 'fresh' soil solutions (r2 = 0.20).",
keywords = "Cadmium, Freundlich parameters, Sorption isotherms",
author = "G{\"u}nther Springob and J{\"u}rgen B{\"o}ttcher",
note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "1998",
doi = "10.1002/jpln.1998.3581610612",
language = "English",
volume = "161",
pages = "681--687",
journal = "Journal of Plant Nutrition and Soil Science",
issn = "1436-8730",
publisher = "Wiley-VCH Verlag",
number = "6",

}

Download

TY - JOUR

T1 - Parameterization and regionalization of Cd sorption characteristics of sandy soils. I. Freundlich type parameters

AU - Springob, Günther

AU - Böttcher, Jürgen

N1 - Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 1998

Y1 - 1998

N2 - Cd sorption isotherms (n = 24) were established for arable, sandy-soils of the 'Fuhrberger Feld' catchment area northeast of Hannover (Germany) using 0.01 Mc Ca(NO3)2 solution with Cd additions ranging from 0 to 44 μMc Cd. Alternative fractions of initially (prior to analysis) sorbed Cd (S0) were added to the amount sorbed during the experiments. The Freundlich equation was fitted to the resulting isotherms. The obtained retention parameters k and M varied with respect to the different S0 fractions. Isotherms corrected with CdEDTA as S0 fraction were nonlinear in their log-form. The highest degree of log-linearity is obtained if S0 is characterized by 40% of the aqua regia extractable Cd. The corresponding k values ranged from 36 to 1275 g1-M LM kg-1 (mean 338 g1-M LM kg-1, cv = 92%). The Freundlich exponent M showed less variation (0.7 to 1.1, cv = 12%) with a mean of 0.88. Functions based on these parameters predicted Cd concentrations in Ca(NO3)2-soil suspensions well (r2 = 0.96) but were hardly related to Cd concentrations of 'fresh' soil solutions (r2 = 0.20).

AB - Cd sorption isotherms (n = 24) were established for arable, sandy-soils of the 'Fuhrberger Feld' catchment area northeast of Hannover (Germany) using 0.01 Mc Ca(NO3)2 solution with Cd additions ranging from 0 to 44 μMc Cd. Alternative fractions of initially (prior to analysis) sorbed Cd (S0) were added to the amount sorbed during the experiments. The Freundlich equation was fitted to the resulting isotherms. The obtained retention parameters k and M varied with respect to the different S0 fractions. Isotherms corrected with CdEDTA as S0 fraction were nonlinear in their log-form. The highest degree of log-linearity is obtained if S0 is characterized by 40% of the aqua regia extractable Cd. The corresponding k values ranged from 36 to 1275 g1-M LM kg-1 (mean 338 g1-M LM kg-1, cv = 92%). The Freundlich exponent M showed less variation (0.7 to 1.1, cv = 12%) with a mean of 0.88. Functions based on these parameters predicted Cd concentrations in Ca(NO3)2-soil suspensions well (r2 = 0.96) but were hardly related to Cd concentrations of 'fresh' soil solutions (r2 = 0.20).

KW - Cadmium

KW - Freundlich parameters

KW - Sorption isotherms

UR - http://www.scopus.com/inward/record.url?scp=23644456021&partnerID=8YFLogxK

U2 - 10.1002/jpln.1998.3581610612

DO - 10.1002/jpln.1998.3581610612

M3 - Article

AN - SCOPUS:23644456021

VL - 161

SP - 681

EP - 687

JO - Journal of Plant Nutrition and Soil Science

JF - Journal of Plant Nutrition and Soil Science

SN - 1436-8730

IS - 6

ER -