Abstract
Methodologies based on spectroscopy, radiocarbon, and chemical reactivity of organic materials have been proposed to assess geogenic carbon (C) pools in soil and sediment samples. This chapter describes the development of two approaches to account for geogenic C in mine soils. The first procedure is based on the selective oxidation of recent organic C using a combination of acid hydrolysis and thermal oxidation. It was evaluated through comparison with the radiocarbon method and was applied in soil-C assessment studies at several reclaimed sites in the Ohio Appalachian region. The second approach examines thermogravimetry as a potential analytical tool for differentiating C in mine soils containing both recent and ancient C fractions. The method was calibrated using recent organic matter (grass litter), carbonate (limestone), and ancient C (coal) fractions. Subsequently, the method was field validated on a chronosequence of reforested minelands in the eastern Kentucky coalfield.
| Original language | English |
|---|---|
| Title of host publication | Soil Carbon Sequestration and the Greenhouse Effect |
| Pages | 347-363 |
| Number of pages | 17 |
| ISBN (Electronic) | 9780891188599 |
| DOIs | |
| State | Published - Oct 26 2015 |
Bibliographical note
Publisher Copyright:© 2009 by Soil Science Society of America, Inc.
Keywords
- Acid hydrolysis
- Carbonate fraction
- Geogenic carbon assessment
- Mine soils
- Ohio Appalachian region
- Organic carbon fraction
- Reforested minelands
- Thermal oxidation
- Thermogravimetric fractionation procedure
ASJC Scopus subject areas
- General Engineering
- General Agricultural and Biological Sciences