In this system, the degradation of organic pollutants occurs by attack of hydroxyl radicals (OH) which are produced from the reaction of added ferrous catalyst (Fe2+) and hydrogen peroxide (H2O2) electrogenerated by oxygen reduction at carbon felt cathode.
And, finally, what proportion of humans' exposure to plastic ingredients and environmental pollutants occurs through seafood?
For the most part, he explains, exposure to the studied pollutants occurs indoors, whereas the authors used outdoor concentrations as the bases for their estimates.
Personal exposure of children to air pollutants occurs mainly in three microenvironments, home, school and during transport, which Ashmore and Dimitroulopoulou discuss in detail [ 3].
Since individuals in North America spend an average of 87% of their time indoors [ 9, 10] and many pollutants readily penetrate indoors, a significant proportion of total exposure to outdoor-generated pollutants occurs indoors.
A study by researchers at the University of Southern California (USC) and the California Air Resources Board found that up to half of Los Angeles' residents total exposure to ultrafine air pollutants occurs while people are travelling in their vehicles [ 4].
It has been postulated that gastrointestinal exposure to air pollutants occurs via mucociliary clearance of PM from the lungs as well as ingestion via food and water sources (Beamish et al. 2011).
Environ Health Perspect 122 178 186; http://dx.doi.org/10.1289/ehp.1206380 For most individuals worldwide, exposure to most persistent organic pollutants occurs mainly through ingestion of contaminated food (Moser and McLachlan 2002; Patandin et al. 1999).
Given the amount of time that people spend indoors, for many urban residents the major fraction of their exposure to "outdoor pollutants" occurs indoors (Chen C et al. 2012a, 2012b; Chen and Zhao 2011; Hodas et al. 2012; Meng et al. 2009; Mullen et al. 2011; Wang et al. 2008).
Significant reduction in the emission of pollutants occurred, however, as a consequence of the rapid fall in industrial production in the early 1990s, following the abandonment of communism and the introduction of economic reforms.
