Figure 3.
Response curve of (a) FeS and (b) MgCl2 in soil, integrated line intensity over calculated (a) Fe and (b) Mg mass fractions, (a) R2 (406.359 nm) = 0.988, R2 (438.354 nm) = 0.992, (b) R2 (277.983 nm) = 0.989.
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