General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 42488-2023
Introduction
GB/T 42488-2023 Soil Quality - Determination of 15N Isotopic Abundance in Inorganic Nitrogen in Soil - Stable Isotope Ratio Mass Spectrometry is a standard published by the Standardization Administration of China. This standard specifies the method for determining the 15N isotopic abundance in inorganic nitrogen in soil using stable isotope ratio mass spectrometry.
The determination of 15N isotopic abundance in inorganic nitrogen is important for assessing soil quality and understanding nitrogen cycling in ecosystems. Stable isotope ratio mass spectrometry is a highly accurate and reliable technique for measuring isotopic abundances. This standard provides guidance on sample collection, preparation, and analysis procedures to ensure accurate and consistent results.
The method outlined in this standard involves extracting inorganic nitrogen from soil samples and converting it into nitrogen gas using a series of chemical reactions. The nitrogen gas is then introduced into a mass spectrometer, where the 15N isotopic abundance is measured relative to a standard reference material. The results obtained from this analysis can provide valuable information on nitrogen sources, transformations, and losses in soil.
By following the procedures outlined in GB/T 42488-2023, researchers and practitioners can confidently determine the 15N isotopic abundance in inorganic nitrogen in soil, contributing to a better understanding of soil quality and nitrogen dynamics. This standard is applicable to various agricultural, environmental, and ecological studies, providing a valuable tool for soil scientists and researchers.
GB/T 42488-2023 history
2023GB/T 42488-2023 Soil Quality Determination of Inorganic Nitrogen 15N Abundance in Soil Stable Isotope Ratio Mass Spectrometry