Synthesis and Characterization of Feed-Grade Monocalcium Phosphate Ca(H₂PO₄)₂·H₂O from Oyster Shell

Figure 3

Emission spectra of the 10-fold dilution (turquoise/violet curves) of the oyster shell (a), PCC (b), and MCP (c) samples. The spectra of As are on the left, Pb in the middle, and Cd on the right. The yellow curves for the blank, and the red ones for calibration curves.

(a)

(b)

(c)