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Related Concept Videos

Voltammetry: Stripping Methods01:13

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

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Related Experiment Video

Updated: Jul 15, 2026

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
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Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

Published on: September 1, 2020

Predicting cadmium adsorption on soils using WHAM VI.

Zhenqing Shi1, Herbert E Allen, Dominic M Di Toro

  • 1Center for the Study of Metals in the Environment, Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA.

Chemosphere
|April 27, 2007
PubMed
Summary

Soil organic carbon and pH are key factors controlling cadmium adsorption in soils. A linear relationship between soil organic carbon and active organic carbon aids in predicting cadmium

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Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
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Last Updated: Jul 15, 2026

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
12:03

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Published on: September 1, 2020

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

Area of Science:

  • Environmental Science
  • Soil Science
  • Geochemistry

Background:

  • Cadmium (Cd) contamination in soils poses environmental risks.
  • Understanding Cd adsorption is crucial for predicting its environmental fate.
  • Soil properties significantly influence heavy metal behavior.

Purpose of the Study:

  • To investigate Cadmium adsorption on diverse New Jersey soils.
  • To identify key soil parameters controlling Cadmium partitioning.
  • To validate a modeling approach for predicting Cadmium behavior.

Main Methods:

  • Batch adsorption experiments (edge and isotherm) were performed.
  • A wide range of soil organic carbon (SOC) and solution pH conditions were tested.
  • The Windermere humic aqueous model (WHAM) was employed for Cd adsorption calculations.

Main Results:

  • Soil organic carbon (SOC) and solution pH were the primary drivers of Cd adsorption equilibrium.
  • A significant fraction of SOC, termed active organic carbon (AOC), was identified as the main binding site for Cd.
  • A linear correlation was established between SOC and AOC, validated by independent data.

Conclusions:

  • The study quantitatively links SOC to Cd binding capacity via AOC.
  • WHAM effectively models Cd adsorption across varying soil compositions and solution chemistries.
  • This predictive modeling approach is valuable for environmental risk assessment of Cadmium.