Soil Labile Metal Concentrations from Chemical and Isotopic Extraction

Four soils provide concentrations of Ni, Cu, Zn, Cd, and Pb measured via three distinct chemical extractants and isotopic dilution methods. The dataset includes metal concentrations in mg/kg for both standard chemical extraction (MExt) and isotopically exchangeable pools (EValue and EExt).

Use Cases

• Compare the effectiveness of 0.43 M HNO3, 0.43 M CH3COOH, 1 M CaCl2, and 0.05 M Na2H2EDTA extractants by analyzing their respective MExt mg/kg values for metals like Cd and Pb.
• Model the relationship between isotopically exchangeable metal (EValue mg/kg) and chemically extracted metal (MExt mg/kg) to assess labile pool predictability for Cu and Zn.
• Analyze how soil suspension in different extractants alters isotopically exchangeable concentrations (EExt mg/kg) for Ni and Cd to understand measurement context effects.

Strengths

• Includes data for five environmentally significant heavy metals: Ni, Cu, Zn, Cd, and Pb.
• Provides measurements from three parallel methodological approaches: chemical extraction, isotopic dilution in water, and isotopic dilution in extractants.
• Data is curated and published by the Environmental Information Data Centre with a persistent DOI.

Limitations

• Sample size is limited to only four soils, restricting statistical power and geographic generalizability.
• The dataset's temporal coverage and specific soil types or locations are not described in the provided input.
• Lacks accompanying metadata on soil properties (e.g., pH, organic matter) which are critical for contextualizing metal lability.

Provenance

Source

Environmental Information Data Centre

Collection Method

Laboratory measurement using chemical extraction with four reagents and isotopic dilution techniques on soil samples.

Time Range

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Freshness

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Geography

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