Fig. 6: Relationships between river pH and Nd concentration ([Nd]), and between dissolved organic carbon concentration ([DOC]) and maximum Nd removal percentage in estuaries. | Nature Communications

Fig. 6: Relationships between river pH and Nd concentration ([Nd]), and between dissolved organic carbon concentration ([DOC]) and maximum Nd removal percentage in estuaries.

From: Overlooked riverine contributions of dissolved neodymium and hafnium to the Amazon estuary and oceans

Fig. 6

a Relationship between river pH and dissolved log [Nd] calculated from 48 rivers. b Predicted discharge-weighted mean [Nd] based on the available global dataset (n = 582). c Relationship between [DOC] and maximum Nd removal percentage calculated from 12 rivers. d Predicted discharge-weighted mean maximum Nd removal percentage based on the available global dataset (n = 211). Some large rivers have been flagged in panels b and d to show the impact of these highly weighted rivers on the calculations of global discharge-weighted mean [Nd] and estuarine removal percentage.

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