Occupational and Ecotoxicological Hazards Associated with Ishiagu Quarry Industry in South-Eastern Nigeria

Abstract

 The health status of workers and air quality of work environment were assessed and analyzed in the Ishiagu Quarry industry, South-Eastern Nigeria. Blood and sputum samples collected were analyzed using standard laboratory procedures, chest radiography and hair washings from workers were carried out following standard protocols. Air quality was determined using CROWCON Gasman II monitor/analyzer. Average haemoglobin of workers in Ishiagu quarry industry was 70.43±6.16%. Average values of white blood cell (total count) were: 5198.15±341.69 mcl. Average values of eosinophil (direct count) were 5.60±1.84% and within the standard limit.  Average values of Erythrocyte Sedimentation Rate recorded was 54.7±25.61mm/hr. Chest radiology revealed that 130 (13%) Ishiagu quarry workers had consolidation of the lung. Heavy metal level from hair washings among Ishiagu quarry workers was Lead 0.26±0.03mg/l; Cadmium, 0.12±0.01mg/l; Chromium. 0.11±0.06mg/l; Arsenic, 0.02±0.01mg/l and Mercury, 0.01±0.10mg/l. Average values of air quality were NO₂, 0.65±0.32ppm; CO, 13.83±1.61ppm; COâ‚‚, 17±3.05%; SO₂, 1.15±0.38ppm. The concentration of Volatile Organic Compound was 0.40±0.20ppm. Particulate matter at Ishiagu quarry industry had raised level of 59.7±22.53μg/m³. Common diseases observed were pulmonary consolidation (biomarker to lung cancer)/pneumonitis.