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1.指导值:8小时平均:100微克/立方米。由于最新的确切结论指出,每日死亡率与臭氧浓度降低之间存在关联,因此在2005年《空气质量准则》中对先前版本的世卫组织《空气质量准则》建议的极限值(120微克/立方米)作了下调。2.定义和主要来源:与高层大气臭氧层不同的是,地面的臭氧是光化学烟雾的一个主要组成部分。它是由诸如车辆和工业释放出的氧化氮(NOx)等污染物以及由机动车、溶
1. Guidance Value: 8 hours Average: 100 μg / m3. As the latest and concise findings indicate a link between the daily mortality rate and the reduction in ozone concentrations, the recommended limits of the WHO Air Quality Guidelines of the previous version in the 2005 Air Quality Guidelines (120 μg / Cubic meter) has been cut. 2. DEFINITIONS AND MAIN SOURCES: Unlike the upper atmospheric ozone layer, ground-level ozone is a major component of photochemical smog. It is pollutants such as nitrogen oxides (NOx) released by vehicles and industries, and by motor vehicles, dissolved