Skip to main content

Table 3 Concentration of gases and particulate matter from pyrolysis for settlements in Igboora, Oyo State

From: Air quality index from charcoal production sites, carboxyheamoglobin and lung function among occupationally exposed charcoal workers in South Western Nigeria

  Igbo-Ora (pyrolysis) Igbo-Ora (harvesting)
Igboyange Apata Irepodun Iyana babanla Igboyange Apata Irepodun Iyana babanla
NO2 (ppm) mean ± SD 1.30 ± 1.53 0.69 ± 0.74 1.67 ± 1.34 1.85 ± 1.53 0.097 ± 0.04 0.39 ± 0.40 0.35 ± 0.46 0.15 ± 0.14
SO2 (ppm) mean ± SD 3.82 ± 2.48 0.87 ± 0.83 2.93 ± 3.06 0.80 ± 0.51 0.00 0.08 ± 0.21 0.04 ± 0.06 0.05 ± 0.12
CO (ppm) mean ± SD 691 ± 111 408 ± 116 959 ± 240 492 ± 202 1.83 ± 1.20 64.3 ± 67.5 32.7 ± 45.8 80 ± 102
CO2 (ppm) mean ± SD 3281 ± 1952 2045 ± 132 2952 ± 1813 2863 ± 1547 236.89 ± 15.57 517 ± 169 584 ± 183 1222 ± 1355
PM2.5 (µg/m3) mean ± SD 44,000 ± 17,000 50,600 ± 22,800 328,000 ± 87,000 70,400 ± 15,400 540 ± 210 450 ± 210 480 ± 220 540 ± 250