A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China.

ACS Omega · 2020 · PMC7144165 · PMID 32280907

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a decreasing trendno p-value reported

In contrast, the N isotope values of the RM showed a decreasing trend ( Figure 1 ) when the volume of O 2 injected was higher than 25 mL, and the N isotope became invariant.

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