RT - 作者TY - JOUR YR - 2014年5月9日JF - 当前世界环境JO - SP - OP - VO - 26 - 28 UL - www.a-i-l-s-a.com/article/491/ DO - 10.12944 / CWE.9.2。01 N 2 - 空气动力学直径小于10μm（PM10）和五个气态空气污染物（O3，CO，NO2，SO2和H2S）的空气颗粒物质的浓度被测量（1999年10月 - 2004年6月 - 2004年6月）在沙特阿拉伯利雅得城市王建国国王城市科技（KACST）的五个空气质量监测网站。The main objective of this study is to evaluate the quality of ambient air in relation to its possible effects on human health in the urban area of Riyadh city using the U.S. Environmental Protection Agency (USEPA) Air Quality Index (AQI) and break down analysis of five criteria pollutants (O3, CO, NO2 and SO2 and PM10) and Hydrogen Sulphide (H2S). The concentrations of selected pollutants in ambient air has shown upward trends except for sulfur dioxide (SO2) and hydrogen sulfide (H2S), which exhibited decreasing trends over the time. Using the AQI based on a health perspective, a breakdown analysis was conducted. The results confirmed that 71% of the time Riyadh city air is of “Good” quality using the AQI and causes almost no health impacts on city inhabitants. The remaining 29% of more problematic air quality is caused by PM10 (74%) and SO2 (~24%). The study has revealed that both ozone (O3) and carbon monoxide (CO) have little contribution to Riyadh air pollution at 2% and 0.52%, respectively. ER -