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Figure 7
X-ray fluorescence spectra of refractory organic substances from the environment, namely three fulvic acids and one humic acid. The difference in peak height between the fulvic and the humic acids can clearly be seen. |
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Figure 7
X-ray fluorescence spectra of refractory organic substances from the environment, namely three fulvic acids and one humic acid. The difference in peak height between the fulvic and the humic acids can clearly be seen. |