Wet‐Combustion Apparatus and Procedure for Organic and Inorganic Carbon in Soil
説明
<jats:title>Abstract</jats:title><jats:p>A quantitative wet‐combustion method for determining organic carbon in soils is described which employs a simple apparatus and a rapid procedure of analysis. All units of the purifying system are mounted on a compact panel which facilitates assembly and storage of the equipment.</jats:p><jats:p>Evolved CO<jats:sub>2</jats:sub> in a carrier stream is passed successively through traps containing KI, Ag<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub>, concentrated H<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub>, zinc and anhydrone, after which the CO<jats:sub>2</jats:sub> is absorbed on Mikohbite in a Nesbitt bulb and determined by weighing. The method determines total (organic plus inorganic) carbon unless any carbonates present in calcareous soils are previously destroyed. A rapid pretreatment for removing carbonates is described which permits the direct determination of organic carbon.</jats:p><jats:p>The method works satisfactorily on saline soils containing high concentrations of Cl salts and also on extracts that can be evaporated to dryness such as Na‐dispersed organic matter extracts.</jats:p>
収録刊行物
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- Soil Science Society of America Journal
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Soil Science Society of America Journal 24 (1), 36-40, 1960-01
Wiley