本国际标准规定了通过土壤微生物群测量氮矿化和硝化作用的实验室程序。 对于评估土壤质量或污染影响的调查，给出了测量土壤或已知或未知质量土壤中氮矿化速率和程度的程序。 为了研究化学品对土壤中氮矿化的潜在毒性，给出了一个简单的程序，该程序允许评估单一化学品的影响，并为比较不同化学品的毒性提供了基础。

This International Standard specifies laboratory procedures for measuring the mineralization and nitrification of nitrogen by the soil microbiota. For investigations on the evaluation of soil quality or on effects of contamination, a procedure is given to measure the rates and extent of N-mineralization in soil or soils of known or unknown quality. For investigation of the potential toxicity of chemicals to N-mineralization in soils, a simple procedure is given which allows the impact of single chemicals to be assessed and provides a basis for comparison of the toxicities of different chemicals.