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BS EN ISO 14240-2:2011

BS EN ISO 14240-2:2011

$102.76

Soil quality. Determination of soil microbial biomass – Fumigation-extraction method

Published By Publication Date Number of Pages
BSI 2011 16
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This part of ISO 14240 specifies a method for the estimation of microbial biomass of soils by measurement of total extractable organic biomass material mainly from freshly killed microorganisms. The method is also applicable to the estimation of microbial nitrogen and microbial ninhydrin-reactive nitrogen in soil, but this part of ISO 14240 describes only the measurement of extractable organic carbon. The fumigation-extraction (FE) method is applicable to aerobic and anaerobic (water-logged, paddy) soils overthe whole range of soil pH. Biomass can be also measured in soils containing actively decomposing substrates and soils supersaturated with potassium sulfate solution.

NOTE Chloroform fumigation also affects soil fauna. The contribution of carbon from these organisms is generally small (< 5 %) and can usually be neglected.

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BS EN ISO 14240-2:2011
$102.76