The migration of some biometal ions in the system mineral tissue of teeth-soil and teeth-water mediums

Abstract

The paper outlines the changes in the mineral tissue of teeth which was exposed to the influence of natural mediums agents. Also, mineral tissue can be used as potentially important forensic material which is gradually altered under the influence of external mediums. Biometal content was determined by using ICP-OES technique. According to the quantitative changes of biometals in teeth tissue after its exposure to different mediums, the migration of ions Ca2+, Mg2+, Fe2+, Cu2+ and Zn2+ in the teeth-soil and teeth-water mediums was observed. The Ca2+ and Mg2+ ions content in mineral tissue increased, but the Cu2+ ion content decreased. The Fe2+ and Zn2+ ions migration depends on the content and type of the soil mediums and differs for clay soil, limestone enriched soil and urban area soil. The occurred changes in the teeth mineral matrix were detected by SEM-EDS technique. The intensity of the biometal content and the mineral matrix changes are a potentially significant subject matter for forensic examination, because they indicate the kind of medium in which this material was kept. [Projekat Ministarstva nauke Republike Srbije, br. III45017 and br. TR34008]

Keywords

• biometal ions
• migration
• teeth
• -soil
• -water mediums