Reports a comprehensive field study of atmospheric ammonia(NH⊂3) concentration which was conducted in Jiddah, Saudi Arabia(one of the fastest growing cities in the world) for the…
Abstract
Reports a comprehensive field study of atmospheric ammonia (NH⊂3) concentration which was conducted in Jiddah, Saudi Arabia (one of the fastest growing cities in the world) for the period 1984‐1987. Ammonia trends have been developed for five stations in Jiddah: daily, monthly and annual means, maximum and mean maximum reported. The average NH⊂3 concentration for 1984, 1985, 1986 and 1987 was 0.027 μl/l, 0.023 μl/l, 0.018 μl/l and 0.020 μl/l, respectively. A decrease in NH⊂3 concentration from 1984 to 1987 was observed. The four years′ average concentration was 0.022 μl/l and a maximum of 0.490 μl/l was recorded once at station 104 in 1984. The statistical significance of data and background information for air quality standards for the city are discussed. Analysis of data shows a lower mean than any international air quality standards.
Details
Keywords
Presents the measured concentrations of iron, zinc, cobalt,chromium, nickel, lead, manganese and sodium in atmospheric inhalablecoarse and fine particles for the period September…
Abstract
Presents the measured concentrations of iron, zinc, cobalt, chromium, nickel, lead, manganese and sodium in atmospheric inhalable coarse and fine particles for the period September 1984‐April 1986 in Jedda, Saudi Arabia. The results show that iron and sodium have the highest concentrations, indicating that inhalable particles are of soil and sea origin. The metal concentrations of fine inhalable particles are much smaller than those of coarse inhalable particles, so that human health is hardly affected.
Details
Keywords
The study of air pollution in Saudi Arabia is not only very important atlocal level; it may also provide an improved understanding of airpollution problems in other arid regions…
Abstract
The study of air pollution in Saudi Arabia is not only very important at local level; it may also provide an improved understanding of air pollution problems in other arid regions throughout the world. A comprehensive field study of atmospheric ozone pollutants was conducted in Jiddah, Saudi Arabia (one of the fastest growing cities in the world) for the period 1984 to 1987. Ozone trends have been developed for five stations in Jiddah. Daily, monthly and annual means, maximum and mean maximum are reported. Average ozone concentration for these four years is given. A slight decrease in ozone concentration from 1984 to 1987 was observed. The observed reduction in the pollutant′s concentration during 1985‐87 was attributed to the implementation of motor vehicle periodical inspection (MVPI). Background information for air quality standards and the statistical significance of data are discussed. Analysis of data shows a lower mean than any international air quality standard.