Journal of Atmosphere

Published by: Conscientia Beam
Online ISSN: 2414-2484
Print ISSN: 2518-2528
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No. 1

Ammonia Variations in Owerri Metropolis and Ecological Impact

Pages: 15-22
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Ammonia Variations in Owerri Metropolis and Ecological Impact

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DOI: 10.18488/journal.94.2020.31.15.22

Nnadozie, C.F. , Nkwoada A.U. , Akagha C.I.

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Nnadozie, C.F. , Nkwoada A.U. , Akagha C.I. (2020). Ammonia Variations in Owerri Metropolis and Ecological Impact. Journal of Atmosphere, 3(1): 15-22. DOI: 10.18488/journal.94.2020.31.15.22
Ammonia emissions inventory is rarely reported in Nigeria and when at high levels is toxic to animals including humans. It is instructive to evaluate the levels of ammonia in metropolitan area as a priority to promote a clearer understanding of its distribution and interaction. The study investigated the levels of ammonia in different parts of Owerri Metropolis and its ecological impact. Ambient atmospheric NH3 concentrations have been measured for Owerri metropolis, away from point sources, for a period of three consecutive months in 2018 calendar year. Measured lowest mean NH3 concentrations have been in August at 0.04633 mg/L, which exceeded the critical loads and occupation exposure limits. There has been no significant change in the spatial variation in NH3 concentrations between the months albeit different locations varied significantly. The ecosystems where lichens and bryophytes are key species within the studied area may be under threat from loss of biodiversity while levels of human exposure to NH3 are completely unacceptable and require reducing and controlling measures. Hence, excess ammonia will induce elevated nitrification and denitrification driving higher greenhouse gas emissions.
Contribution/ Originality
This study is one of very few studies which have investigated the levels of ammonia in a metropolitan area in Nigeria. The findings shows relatively high levels of ammonia, which if not controlled might increase to levels that disrupts human health and ecosystem balance.

Occupational Health Exposure and Perceived Effects of Portland Cement Dust Pollution on Cement Factory Workers

Pages: 1-14
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Occupational Health Exposure and Perceived Effects of Portland Cement Dust Pollution on Cement Factory Workers

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DOI: 10.18488/journal.94.2020.31.1.14

Gabriel C. C. Ndinwa , Charity O. Chukumah , Solomon A. Akpafun

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Gabriel C. C. Ndinwa , Charity O. Chukumah , Solomon A. Akpafun (2020). Occupational Health Exposure and Perceived Effects of Portland Cement Dust Pollution on Cement Factory Workers. Journal of Atmosphere, 3(1): 1-14. DOI: 10.18488/journal.94.2020.31.1.14
The perceived occupational and environmental health challenges arising from the exposure of cement dust pollution on Bua cement factory workers were investigated in this study to establish if there is any significance of cement dust exposure on workers’ health. The study was designed as a cross-sectional type of research that adopted a purposive group based strategy for sampling. 110 cement factory workers with a minimum of two years’ work experience were selected for the study. 90 respondents were randomly selected from a community situated at about 21km away from the factory and used as control. Structured questionnaire was used for data collection and SPSS statistical package was used to analyze the data. Inferential statistics was used to test the hypotheses at p <0.05, ascertain correlation of the variables and authenticate the analysed results. The result revealed that 15 types of ailment were reported among the sampled respondents with factory workers recording higher percentage occurrence of ailments than respondents from the control. Factory workers were more susceptible to the itemized ailments recorded when compared to respondents from control. Significant difference in the prevalence of perceived health ailments between factory workers and control was established. Workers from storage and transportation section were revealed to have higher percentage (77.3%) compliance level on the use of safety gadgets during work hours than workers from other sections. Also, a significant relationship between the perceived health risks associated with cement dust exposure and the health of factory workers was established. The researchers made reasonable recommendations to forestall further health complications that might arise from working on a cement production factory.
Contribution/ Originality
This study contributes to the existing literature on occupational exposure and perceived effects of cement dust pollution on factory workers. It also provides in depth findings of the associated health effects arising from cement production on workers in Nigeria precisely.