M. Onwuka

Mass Concentration and Elemental Constituent of Particulate Matter in Ambient Air of Two Cement Industries and Its Health Risk Analysis

M. Onwuka, G. O. Avwiri & C. P. Ononugbo · Advances in Research · 2020

Particulate matter concentration was measured over two cement production sites in Nigeria using a gravimetric high volume air sampler and Atomic Absorption Spectroscopy (AAS) for elemental analysis. The mass concentration of SPM ranged from 7.50 µg/m3 to 303.1 µg/m3 with mean val...

Open access Research Article 10.9734/air/2019/v20i630176

Radiation Organ Doses and Excess Lifetime Cancer Risk Due to Exposure to Gamma Radiation from Two Cement Industries in Nigeria

M. Onwuka, C. P. Ononugbo & G. O. Avwiri · Journal of Scientific Research and Reports · 2019

A study of background ionizing radiation (BIR) levels to estimate organ dose rates and excess lifetime cancer risk in Unicem cement producing company, Calabar, Cross River state and Bua cement producing company, Okpella in Edo state have been carried out using Digilert 100 and Ra...

Open access Research Article 10.9734/jsrr/2019/v25i1-230178

Radiometric Survey of Granitic Quarry Site of Ebony State, Nigeria

M. Onwuka & C. P. Ononugbo · Advances in Research · 2019

Radiometric survey of the granitic quarry site at Ishiagu and its environment was done using two radiation monitors and geographical positioning system (GPS) for GIS mapping. In-situ measurement of exposure rate was carried out following the international standard organizational...

Open access Research Article 10.9734/air/2019/v20i230156