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

Table 3

pH measurement of each sample expressed in mean ± standard deviation measured by a pH meter.

Sample	pH
Cockle shell-based calcium carbonate aragonite  microparticles (before addition of BS-12)
Cockle shell-based calcium carbonate aragonite  nanoparticles (after addition of BS-12)
Surface functionalized cockle shell-based calcium carbonate aragonite nanoparticles
Dodecyl dimethyl betaine (BS-12)
Calcium chloride dihydrate of 1000 ppm concentrations