A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Particulate matter in the Cairo atmosphere. 1. Dustfall and its chemical constituents
Abstract Dustfall, sampled in different parts of Cairo, has been analysed for selected constituents in soluble and insoluble fractions. We show that the rate of total particulate deposition over Cairo increased from 27 g/m2 · 30 days during 1962 to 57 g/m2 · 30 days in 1983; the highest rates of deposition were recorded during winter and spring months, while the maximum concentrations of soluble compounds were found during the summer season. The high concentrations of ammonium and sulphates detected in dustfall over Cairo during summer indicates that atmospheric chemical reactions play an important role in this increase of soluble compounds concentration. The rate of deposition in different districts and the chemical composition indicate that particulate matter in Cairo atmosphere is influenced by urban activities and winds loaded with dust from the industrial areas north and south of the city. Furthermore, i.r. spectroscopic analysis show absorption bands at about 2950, 2920, 2820, 2720, 1720, 1465, 1385, 1300 and 1100 cm−1 which are characteristic bands for aliphatic hydrocarbons, aldehydes, and ketones. The presence of these compounds and the high concentration of tarry matter confirm the role of combustion processes in polluting the atmosphere of Cairo.
Particulate matter in the Cairo atmosphere. 1. Dustfall and its chemical constituents
Abstract Dustfall, sampled in different parts of Cairo, has been analysed for selected constituents in soluble and insoluble fractions. We show that the rate of total particulate deposition over Cairo increased from 27 g/m2 · 30 days during 1962 to 57 g/m2 · 30 days in 1983; the highest rates of deposition were recorded during winter and spring months, while the maximum concentrations of soluble compounds were found during the summer season. The high concentrations of ammonium and sulphates detected in dustfall over Cairo during summer indicates that atmospheric chemical reactions play an important role in this increase of soluble compounds concentration. The rate of deposition in different districts and the chemical composition indicate that particulate matter in Cairo atmosphere is influenced by urban activities and winds loaded with dust from the industrial areas north and south of the city. Furthermore, i.r. spectroscopic analysis show absorption bands at about 2950, 2920, 2820, 2720, 1720, 1465, 1385, 1300 and 1100 cm−1 which are characteristic bands for aliphatic hydrocarbons, aldehydes, and ketones. The presence of these compounds and the high concentration of tarry matter confirm the role of combustion processes in polluting the atmosphere of Cairo.
Particulate matter in the Cairo atmosphere. 1. Dustfall and its chemical constituents
Nasralla, M.M. (author) / Shakour, A.A. (author) / Ali, E.A. (author)
Environmental International ; 12 ; 587-591
1986-02-19
5 pages
Article (Journal)
Electronic Resource
English
Characterization of Atmosphere PM2.5 and Dustfall in Xining (China)
| British Library Online Contents | 2013
Dustfall as source of water quality impairment
| Engineering Index Backfile | 1966
Water vapor in polluted Cairo atmosphere
| Elsevier | 1986
Meteorological constraints on characteristics of daily dustfall in Xi'an
| Elsevier | 2017