中山大学学报（自然科学版）Issue(3)：98-101,4.DOI:10.13471/j.cnki.acta.snus.2015.03.017
羟基磷灰石的粒径及其掺入牙膏后对镉离子吸附作用的研究
Effect of Hydroxyapatite and Dentifrice Containing Hydroxyapatite on Aqueous Cadmium Adsorption
摘要
Abstract
The effect of hydroxyapatite (HA)particles with various grain sizes and dentifrice containing hydroxyapatite on aqueous cadmium adsorption was studied.Three kinds of suspensions were prepared by adding dentifrice to HA suspensions containing 3% HA with grain sizes of 20 nm,60 nm and 1 2 μm with different concentrations.Cadmium ion solutions with initial concentration of 0.2 mg/L were mixed with HA suspensions and dentifrice suspensions respectively,and then were kept still for 24 h.The residual cadmium ion concentration of the supernatant was measured by inductively coupled plasma emission spec-trometer,and the sorption rate of cadmium ion was calculated.The sorption rates of cadmium ion of HA particle with 3 grain sizes were above 70%,and 20 nm HA was the best.The sorption rates of cadmium ion of dentifrice containing HA were over 50% by average,and dentifrice containing 20nm HA was the highest.Pure HA and dentifrice containing HA could absorb cadmium ions.HA with size of 20 nm showed the best sorption property.The sorption property decreased by adding dentifrice.关键词
纳米羟基磷灰石/牙膏/吸附/镉离子Key words
nano hydroxyapatite/dentifrice/adsorption/cadmium ion分类
化学化工引用本文复制引用
刘成霞,申晓青,杨剑珍,徐平平..羟基磷灰石的粒径及其掺入牙膏后对镉离子吸附作用的研究[J].中山大学学报（自然科学版）,2015,(3):98-101,4.基金项目
广东省自然科学基金资助项目 （）
