ISO 14238:2012 PDF

Scope: 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.

ISO 14238:2012 Referenced Document

ISO 10381-6 Soil quality - Sampling - Part 6: Guidance on the collection, handling and storage of soil under aerobic conditions for the assessment of microbiological processes, biomass and diversity in the laboratory
ISO 10390 Soil, treated biowaste and sludge - Determination of pH*， 2021-03-31 Update
ISO 10694 Soil quality - Determination of organic and total carbon after dry combustion (elementary analysis)
ISO 11260 Soil quality - Determination of effective cation exchange capacity and base saturation level using barium chloride solution*， 2018-05-01 Update
ISO 11261 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 11274 Soil quality — Determination of the water-retention characteristic — Laboratory methods*， 2019-09-21 Update
ISO 11277 Soil quality*， 2024-03-01 Update
ISO 11465 Soil quality; determination of dry matter and water content on a mass basis; gravimetric method; technical corrigendum 1

2012 ISO 14238:2012 Soil quality - Biological methods - Determination of nitrogen mineralization and nitrification in soils and the influence of chemicals on these processes
1997 ISO 14238:1997 Soil quality - Biological methods - Determination of nitrogen mineralization and nitrification in soils and the influence of chemicals on these processes