Interaction Between Building Design and Indoor Airborne Microbial Load in Nigeria

Microbial Air Quality in Port Harcourt, Nigeria

“…The microbial analysis of indoor air quality carried out in this study revealed a count range of 200 -11850 CFU/m 3 and these were generally (12/14) above the recommended acceptable standards. This range was however similar to two previously published reports on air quality in Port Harcourt (Wemedo et al, 2012;Agbagwa and Onyeamachi, 2014), which reported ranges of 1230 -6660 and 1500 -12540 respectively. Also, these ranges were similar to those of several studies carried out in Ethiopia, which noted microbial loads with ranges of 117 -7284, 397 -2595, 511 -9960 and3106 -9733 (Kabir et al, 2016;Hayleeyesus and Manaye, 2014;Hayleeyesus et al, 2015;Fekadu and Getachewu, 2015).…”

“…Of the 5 studies, only 2 represented the results of their study as CFU/m 3 (Udochukwu et al, 2015;Emuren and Ordinioha, 2016).These studies did not however describe how these values were obtained, and reported values ranging from 5.33 -227.33 CFU/m 3 . Two other studies (Wemedo et al, 2012;Agbagwa and Onyeamachi, 2014) presented their results as CFU/30min and simply as "no of colonies". Conversion of these values to CFU/m 3 based on the Omeliansky formula (Borrego et al, 2012) showed a wide variation in microbial load present, with a rangeof 1230 -12540 CFU/m 3 .…”

Application of phytoncidal plants for improvement of ecological parameters of the air of library interiors

“…The condition of air is considered satisfactory if quantity of moldy mushrooms per 1m 3 does not exceed 300-500 (CFU/m 3 ) [13,16]. However, we have paid attention not only to quantity of moldy mushrooms, but also to presence of Staphylococcus in the air.…”

“…Two rooms similar in volume (195m 3) , air temperature (+ 25 С 0 ), air humidity (20%) and illumination (500-2000 lx) were chosen. The windows faced the north-west.…”

“…People often spend 80% -90% of time indoors [4]. In the indoor air environment there are many microorganismsbacteria, house fungi and viruses [3]. The person passes through himself by breath on the average 14 m 3 of air per day [5].…”