GB/T 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 42490-2023
Introduction
GB/T 42490-2023 Soil quality - Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples - Stable isotope ratio mass spectrometry method is a standard that specifies the method for determining the organic carbon content and carbon isotope ratio, as well as the total nitrogen content and nitrogen isotope ratio in soil and biological samples using stable isotope ratio mass spectrometry.
This standard provides guidance on the sample preparation, measurement principles, and analytical procedures for determining the isotopic composition of carbon and nitrogen in soil and biological samples. The stable isotope ratio mass spectrometry method described in this standard allows for accurate and precise measurements of the isotopic composition, which is essential for understanding the cycling of carbon and nitrogen in terrestrial ecosystems.
The determination of organic carbon and nitrogen isotope ratios in soil and biological samples is important for studying the sources and transformations of carbon and nitrogen in the environment. It can provide valuable information on the dynamics of carbon and nitrogen cycling, nutrient availability, and the impact of human activities on soil quality and ecosystem functioning.
Overall, GB/T 42490-2023 provides a standardized and reliable method for determining the organic carbon content and carbon isotope ratio, as well as the total nitrogen content and nitrogen isotope ratio in soil and biological samples. It is an essential tool for researchers, environmental scientists, and soil quality evaluators in their efforts to assess and monitor soil quality and ecosystem health.
GB/T 42490-2023 history
2023GB/T 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry