Air pollutant concentrations

About: Air pollutant concentrations is a research topic. Over the lifetime, 1652 publications have been published within this topic receiving 36138 citations.

Short-term effects of air pollution on general mortality in Zagreb, Croatia

Abstract: Studies conducted in Zagreb reported a short-term relation between weekly air pollutant concentrations and morbidity and mortality. Air pollution in Zagreb is generally below the limit, and usually within the recommended values of the World Health Organization. Daily variations in general mortality were related with daily variations in air pollution for the period 1995-1997. Poisson regression models were used, controlling for possible confounders, seasonallity, trend, and autoregressive patterns. NO2 was related to general mortality. The best fit was achieved for the four day average concentrations (relative risk /RR/ for 50 ľg/m3 was 1.114 with 95% confidence limits 1.029-1.204). Black smoke and SO2 were not related to general mortality.

Air Pollution Models

Abstract: In parallel with the Clean Water Act, the Clean Air Act and its amendments have established standards relating to the reduction of air pollution emissions from existing and new sources. Regulations exist for many pollutants but much of the research and impact simulation has focused on six major pollutants: sulfur oxides, particularly SO2; nitrogen oxides, including NO2, NO3 and others; total suspended particulates or TSP; hydrocarbons (HC); carbon monoxide (CO); and photochemical oxidants, particularly ozone. The Clean Air Regulations are rather complex, involving a number of different standards as well as multiple approvals for new sources of air pollution. It might be useful to give a brief overview of these regulations since the models used to describe air pollution impacts are so heavily influenced by them. Following this review, the basic theories behind the air pollution models will be discussed and followed by specific model reviews.