DIN EN ISO 14238-2014 土质. 生物方法. 土壤中氮矿化性和氮化合性的测定和各种化学物质对这些过程的影响 (ISO 14238-2012); 德文版本EN ISO 14238-2013
Soil quality - Biological methods - Determination of nitrogen mineralization and nitrification in soils and the influence of chemicals on these processes (ISO 14238:2012); German version EN ISO 14238:2013