Synthesis and Characterization of Cockle Shell-Based Calcium Carbonate Aragonite Polymorph Nanoparticles with Surface Functionalization

Table 2

Measurement of calcium ion concentration (in parts per million units) during five days of surface modification treatment expressed in mean ± standard deviation of three independent experimental batches.

Time of treatments	Calcium ion concentrations in parts per million (ppm); mean ± standard deviation
Day 0 [initial]
Day 1 (6 hours)
Day 2 (12 hours)
Day 3 (18 hours)
Day 4 (24 hours)
Day 5 (30 hours)