Heavy metal

This research evaluated the quality of honey samples collected from artificial and natural apiaries and the surrounding markets in three municipal locations in Edo State, Nigeria. The physicochemical properties, proximate and heavy metal composition of honey samples  from five farms and five nearby markets were analyzed using standard methods. The results were compared with the Codex Alimentarius General Standards and the European Union Council Directive. A narrow pH range of 3.43±0.03 to 3.87±0.00 was obtained, while the free acidity varied between 27.00±0.10 to 83.70±0.30 meq/kg.

Human activities have immensely contributed to pollutants in water bodies such as heavy metals, organic and pathogenic microorganisms. This study was aimed to synthesize and investigate the aseptic efficacy of ZnO-carbonized zobo waste nanocomposite (ZOCZWNC) and Mg-Zn binary oxide (Mg-ZnBO) nanocomposite on Salmonella typhi – gram negative organism and Staphylococcus aureus – gram positive organism as well as removal of cadmium and nickel ions from contaminated water.