The lead removal ability of two kinds of board-shape hydroxyapatites with different Ca/P molar ratio were evaluated. The samples reacted with Pb(NO3)2 in an aqueous solution produced a mixture of hydroxyapatite and hydroxypyromorphite. The results showed that Board-shape Ca-deficient type HAP(HAP-400) has Pb2+ removal ability superior to Board-shape HAP with stoichiometric composition(HAP-300).

The adsorption ability of FL-HAP which we made to test the adsorption power of lipid peroxide was evaluated. The effect of reaction time on the adsorption amount of lipid and lipid peroxide in olive oil was examined.