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e.g., Nitrogen solubility as high as near 25 ppm in forsterite, pyroxene, and garnet have been reported in an experimental study in the 1.5–3.0 GPa range with the oxygen fugacity controlled at those of the NNO and IW buffer (Li et al. 2013). and Olivine dissolves the least nitrogen with about 2–3 ppm at the oxygen fugacity controlled by the Fe-FeO buffer (IW) Why two different buffers are considered here?

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  • $\begingroup$ Are you asking about why those two specific buffers are being used, or about the concept of buffers in general? $\endgroup$ – g.z. Jun 30 at 3:32

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