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Spectrophotometric determination of organic carbon in soil
Communications in Soil Science and Plant Analysis, 1992Abstract A detailed study was made of the well‐known organic carbon determination that is based on measuring the absorbance of the green chromium(III) complex generated when organic matter is oxidized by potassium dichromate in acidic medium. The green chromic colour proved to be unstable, turning slowly to a violet colour.
Walinga, I. +4 more
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Soil organic carbon distribution in roadside soils of Singapore
Chemosphere, 2016Soil is the largest pool of organic carbon in terrestrial systems and plays a key role in carbon cycle. Global population living in urban areas are increasing substantially; however, the effects of urbanization on soil carbon storage and distribution are largely unknown.
Subhadip, Ghosh +2 more
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Soil Organic Matter and Soil Organic Carbon in Barito Delta
Sustainability (STPP) Theory, Practice and Policy, 2023Soil organic matter and soil organic carbon is essential indication of soil carbon stock in terrestrial ecosystem particularly in peatland. Spatial distribution of soil organic carbon and soil organic matter is primary assessment to predict future soil condition under climate change traits.
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Organic Carbon in Soils of the World
Soil Science Society of America Journal, 1993Abstract The C stored in soils is nearly three times that in the aboveground biomass and approximately double that in the atmosphere. Reliable estimates have been difficult to obtain due to a lack of global data on kinds of soils and the amount of C in each soil.
Hari Eswaran +2 more
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The determination of organic carbon in soils
The Journal of Agricultural Science, 1929(1) It is proposed to estimate the amount of organic carbon in soils by determining the amount of sulphur dioxide produced in the ordinary Kjeldahl digestion. The gaseous products of reaction are passed through standard iodine solution, and the excess iodine titrated with standard sodium thiosulphate.
G. W. Robinson, W. McLean, Rice Williams
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CARBONATE DETERMINATION IN ORGANIC SOILS
Canadian Journal of Soil Science, 1974The acid neutralization method and manometric procedures, using several acid-reducing agent combinations, were compared to determine their suitability for carbonate determination in organic soils. The soil–acid reaction observed with the acid neutralization procedure was significantly influenced by the acid concentration and soil type.
WM. VAN LIEROP, A. F. MACKENZIE
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Determination of organic and inorganic carbon in soils by potentiometry
The Analyst, 1976A method is described for the direct, rapid and precise determination of 0–6 mg of organic and/or inorganic carbon in soils. The equivalent amount of carbon dioxide, liberated by improved combustion techniques, is absorbed and precipitated in a solution containing 2.50 mmol of sodium hydroxide and 0.96 mmol of barium chloride.
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Organic carbon and soil porosity
Australian Journal of Soil Research, 2003The %C within the top sandy 0.15 m of a sodic Hydrosol under native trees consisted of a constant %C in uncharged organic matter and a %C in negatively charged organic matter decreasing linearly with depth, as did the specific volume of the soil. The kaolinitic clay present was strongly bonded together.
W. W. Emerson, D. McGarry
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Carbon as a substrate for soil organisms
2005SUMMARY In many ecological studies, soil carbon is regarded as a barely differentiated whole with little attention paid to its underlying characteristics. Although it is widely appreciated that decomposer organisms are nearly infallible as degraders of organic molecules, there are marked differences in the utilisation of different components of ...
D. W. Hopkins, E. G. Gregorich
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Soil and soil organic carbon redistribution on the landscape
Geomorphology, 2007Patterns of soil organic carbon (SOC) vary widely across the landscape leading to large uncertainties in the SOC budget especially for agricultural landscapes where water, tillage and wind erosion redistributes soil and SOC across the landscape. It is often assumed that soil erosion results in a loss of SOC from the agricultural ecosystem but recent ...
Jerry C. Ritchie +3 more
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