The bus tests, conducted over the spring and fall of last year in Boston and Brooklyn, found that diesel-hybrid buses equipped with pollution-exhaust traps and using special low- sulfur fuel produced so little particle pollution that it could not be detected by engineers' machines.
But at ground level, south-east Asian cities have been choking for weeks, wreathed in an acrid, stinking blanket of half-burned vegetation mixed with industrial pollution, car exhaust fumes and ash.
An example of a three-part thesis statement might look something like this: Global warming is caused by industrial pollution, automobile exhaust fumes, and waste dumping in the oceans.
Small particle pollution from exhaust and industrial fumes [ 76] as well as a wide range of chemicals in the air, water, soil, and households [ 77] makes up the natural physical environment.
The agency is expected to require "safe biofuel" additions, or oxygenates, which add oxygen to fuel and reduce pollution in exhaust.
This gas analyzer can be used in chemical industry to analyze compositions of gas mixtures, in environmental control to monitor pollution by exhaust gases, such as SO2, NO2, NO, NH3, in metallurgy and in other industries.
Particle pollution, vehicle exhaust and ground level ozone are the most important types of hazardous pollutants.
The relevance of 8-oxodG is further strengthened by observations that this lesion is elevated in animal tissues and human blood cells upon exposure to urban air pollution, diesel exhaust, or DEP (Møller et al. 2008).
Specifically, unsaturated aldehydes and carbonyls (acrolein, acrylonitrile, MVK) are significant components of air pollution, automobile exhaust, and smoke from cigarette, wood, and coal combustion (Andrews and Clary 1986; Bisesi 1994; Faroon et al. 2008; Feron et al. 1991; Fujioka and Shibamoto 2006; Stevens and Maier 2008; Tucek et al. 2002; Woodruff et al. 2007).
