Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Air pollution


Seasonal Variations of Air Pollutants Concentrations within Baghdad City

Layla L. Alwan; Sedik A.K. Al-Hiyaly; Ayat H. Mahdi

Engineering and Technology Journal, 2019, Volume 37, Issue 3C, Pages 356-364
DOI: 10.30684/etj.37.3C.9

Air pollution is increased significantly nowadays due to various
industrial activities and car combustion emissions. In this work, data have been
collected from Al-Jadrya Monitoring Station (JMS). The effects of seasonal
variation on the pollutants concentration were examined. Furthermore,
relations of nitrogen oxides concentrations (NOx) were assessed during the first
hours of the working days. Three randomly days from each of January,
February, July and August have been taken to represent winter and summer
seasons, respectively. It has been found that concentrations of all examined
pollutants have not exceeded the acceptable limits. However, nitrogen oxides
(NOx) seem to be effected by seasonal variation where its concentration has
increased in June and August of the summer season. The concentrations of other
pollutants (SO2, CO, PM) have not been influenced by seasonal variations, and
they depend on the gaseous source emissions at different times of the year.
Hourly monitoring for nitrogen oxides (NOx) concentration showed increasing
in concentrations during the summer season, especially in the early hours of the
working days.

Air Pollution Effects in Some Plant Leaves Morphological and Anatomical Characteristics within Baghdad City. Iraq

Abdul Hameed M.J. Al-Obaidy; Israa M. Jasim; Abdul-Rahman A. AlKubaisi

Engineering and Technology Journal, 2019, Volume 37, Issue 1C, Pages 84-89
DOI: 10.30684/etj.37.1C.13

The present study examined the air pollutants effects in seven plant species leaves, Olea europea L., Zizphus spina-christi L. Desf., Conocarpus lancifolius Engl., Albizia lebbeck L. Benth., Eucalyptus camaldulensis Dehnh., Clerodendron inermis L. Graeth and Dodonaea viscasa Jacq., distribute within Baghdad city. The leaves sample were collected from May (2016) to April (2017) in five regions within Baghdad city, which are Karrada, Sadr City, Shoula and Mansur, as well as Baghdad tourist island as a control region. The Sulfur dioxide (SO2), Nitrogen dioxide (NO2), Carbone monoxide (CO), Volatile organic compounds (VOCs) and Suspended particulate matter (PM) were measured in all study regions. The present study results showed an increase in concentration of all air pollutants in the four study regions compared to Baghdad tourist island, (SO2) average was (0.56) ppm, while (NO2) average was (0.80) ppm, (CO) average was (27.69) ppm, (VOCs) average was (5.99) ppm, while (PM) average was (480.80) μg /m3. The morphological and anatomical characteristics include length, width, area, number of stomata; the number of epidermis cells, and stomatal index were measured in plant leaves. E. camaldulensis leaves were recorded highest length rate (11.03) cm, while highest width rate (5.51) cm and leaf area rate (49.63) cm2 were recorded in A. lebbeck leaves. The highest number of stomata and epidermal cells were also recorded in A. lebbeck leaves (101.25 and 738.85) in respectively. But highest stomatal index value was recorded in D. viscasa leaves (14.21).