GB/T 15773-1995
Replaced
GB/T 42490-2023
Active
National standards
GB/T 42490-2023 Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
GB/T 42490-2023 Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
Basic Information
Standard Code:
GB/T 42490-2023
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
\nSoil and fertilizer
ICS Name:
Comprehensive Study of Soil Quality and Soil Science
Publish Date:
2023-03-17
Implement Date:
2023-10-01
Pages:
11 pages
Scope
This document describes the method of determining the organic carbon content and carbon isotope ratios, as well as the total nitrogen content and nitrogen isotope ratios in soil and biological samples (plants, animals, microorganisms) using an elemental analysis-isotope ratio mass spectrometer (EAIRMS). This document is applicable to the determination of organic carbon and total nitrogen content in soil and biological samples, as well as the determination of carbon and nitrogen isotope ratios in soil and biological samples from non-labeled (natural abundance) and tracer experiments (f13C≤30%, f15N≤30%). The quantitative limits for determining the organic carbon, total nitrogen content, and carbon/nitrogen isotope ratios in soil and biological samples (expressed as absolute carbon and nitrogen amounts) are: 30 μg for carbon and 20 μg for nitrogen.
Development Information
Referenced Standards
GB/T 37847-2019 General rules for isotope composition analysis by mass spectrometry
GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
GB/T 37885-2019 Chemical reagent—Classification
Related Standards
GB/T 18834-2002
Active
GB/T 18834-2002 Soil quality—Vocabulary
TD/T 1043.1-2013
Active
TD/T 1043.1-2013 Technical regulation on subsurface drainage and desalination soil—Part 1:Soil survey
TD/T 1043.2-2013
Active
TD/T 1043.2-2013 Technical regulation on subsurface drainage and desalination soil—Part 2:Planning design and construction
GB/T 32720-2016
Active
GB/T 32720-2016 Laboratory methods for determination of microbial soil respiration
GB/T 32721-2016
Active