Research Article
Molecular Signatures of Humic Acids from Different Sources as Revealed by Ultrahigh Resolution Mass Spectrometry
Figure 2
Respective DBE-m/z diagrams from (a) humic acids from Jiufeng forest soil, (b) humic acids from Suwannee River, and (c) humic acids from leonardite. Nor_int is the normalization of the intensity of each molecule.
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(b) |
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