Simultaneous measurement of soil organic and inorganic carbon: evaluation of a thermal gradient analysis

Vuong, Truong Xuan; Heitkamp, Felix; Jungkunst, Hermann F.; Reimer, Andreas; Gerold, Gerhard

doi:10.1007/s11368-013-0715-1

Cited by 26 publications

(35 citation statements)

References 21 publications

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“…A multiphase carbon determinator (RC‐412, Leco, St. Joseph, MI, USA) was used for analysis of IC and OC by ThG (Chichester & Chaison, ; Vuong et al ., ). An amount of 10–20 mg of ground sample was placed in quartz crucibles.…”

Section: Methodsmentioning

confidence: 97%

“…This method is called the ‘Scheibler’ or calcimeter (CALC) method. This method is cheap, simple and reliable for determining IC, at least in samples containing mainly calcite (Horváth et al ., ; Tatzber et al ., ; Vuong et al ., ). Dolomite, however, reacts more slowly than calcite; therefore, it needs very long time periods to be dissolved by acid.…”

Section: Introductionmentioning

confidence: 97%

“…Moreover, samples containing sulphide will volatize hydrogen sulphide (H 2 S) and thus induce an overestimate of CO 2 release (Rozzi & Brunetti, ; Hafner & Bisobni, ), causing a positive bias in measurement of IC (Hafner & Bisobni, ). Consequently, calculation of OC as the difference between total carbon (TC) and IC will also be erroneous (Vuong et al ., ). In some soils, the magnitude of this error may result in substantially different estimates for total SOC stocks: Kalbitz et al .…”

Section: Introductionmentioning

confidence: 97%

“…In a prior study (Vuong et al ., ), we were able to show that total carbon, OC and IC, in the form of calcite, could be quantified by a thermal gradient method (ThG). The thermal gradient method also relies on different temperatures of IC and OC decomposition, but offers the advantage that CO 2 evolution is continuously monitored during the ramped combustion.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of organic and inorganic carbon in dolomite‐containing samples

Vuong

Prietzel

Heitkamp

2015

Soil Use and Management

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It is still open to question which method is the best for quantifying organic carbon (OC) and inorganic carbon (IC) in soils containing dolomite. The aims of this study were (1) to compare the accuracy of a novel thermal gradient (ThG), the classical calcimeter (CALC) and the loss-on-ignition (LOI) methods on a reference sample set with known proportions of OC present as soil organic matter (SOM) and IC present as dolomite and (2) to compare the results of the different methods on a set of soil samples with different dolomite and SOM contents. The CALC and LOI methods rely on separate quantification or removal of IC by acid or heat, whereas IC and OC can be quantified in a single run by the ThG analysis. The ThG method was the most accurate method for the reference sample set, especially when dolomite contents were high. On the soil sample set, the ThG and CALC methods performed equally well, but only when two outliers were eliminated. The LOI method was not satisfactory for either sample set. Overall, ThG was the most reliable method for measuring IC and OC in dolomite-containing samples over a wide range of concentrations, but the more widely used CALC method was also acceptable.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurement of organic and inorganic carbon in dolomite‐containing samples

Vuong

Prietzel

Heitkamp

2015

Soil Use and Management

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“…Between 1 and 10 g was scaled, depending on the reaction of the sample with 10 % HCl in a preliminary test (Truong et al, 2013).…”

Section: Soil Sampling and Determinationmentioning

confidence: 99%

Revegetation of artificial grassland improve soil organic and inorganic carbon and water of abandoned mine

Yang

Huang

Wang

et al. 2015

J. Soil Sci. Plant Nutr.

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Mining and related activities caused plant productivity and soil carbon content reduced in arid and semi-arid ecosystems. Soil carbon plays an essential role in ecosystem stability. Soil carbon and associated changes in soil property were important drivers and indicators of ecosystem recovery at post-mining areas. We selected 5, 10 and 20 years of restoration lands to examine the effect of artificial grassland on vegetation community and soil property. Results showed that artificial grassland markedly increased the biomass, canopy coverage and soil carbon content, but decreased soil bulk density and soil water content. After 10-year of restoration, both the biomass and soil organic carbon (SOC) content reached the peak, however, soil bulk density and soil water content arrived the lowest at depth of 0-20 cm and got the highest at depth of 20-30 cm. At 20-year of restoration land, the biomass (above-and belowground) and SOC content (0-30 cm) significantly decreased by 46.2 % and 67.0 % with compared to 10-year of restoration land, while soil bulk density of 0-10 cm and 10-20 cm depths increased by 7.8 % and 21.4 %, respectively, soil water content (0-30 cm) increased by 11.6 % . It was evident that artificial grassland as an effective ecological restoration approach could improve soil physicchemical property, while properly anthropogenic perturbations were also needed to stimulate plant growth.

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