The major sources of human exposure to about a dozen volatile organic chemicals (VOCs) have recently been identified.1For nearly every chemical, the major sources of exposure are completely different from the major sources of emissions. This finding implies that current environmental regulations and ...
The break in the HDPE membrane, especially at the joint of the HDPE membrane, and the widely corroded gas extraction wells in the landfill both constituted significant sources of landfill gas leakage. In the anaerobic fermentation and EMBT processes, the tipping unit and the sorting system for MS...
reduce emissionsfrommajor pollutantsources. legco.gov.hk legco.gov.hk 在今年我們會推行多項新措施,進一步減少主要污染源的排放。 legco.gov.hk legco.gov.hk (a) the use of catalysts can effectively reduce the emission of particulates,amajor pollutantinthe air, by ...
Carbon monoxide is one of the most acutely toxic of all indoor air pollutants. It's caused by the incomplete combustion of fossil fuels. Common sources are...Tobacco smoke, space heaters (non-electric), defective furnaces, and automobile exhaust. ...
One of the main reasons for this behavior is the financial crisis of 2008, forcing the application of alternate heating sources based on cheap low-quality coal. Regarding HCHO, an oxygenated Volatile Organic Compound (VOC), the main hot spot is noticed over the city Atyrau, the oil capital ...
Moreover, some VOCs and pesitides may be widely distributed at low concentrations in shallow ground water throughout major urban areas. As a result, the differentiation between point and non-point sources for these compounds in urban areas may be difficult....
The data on NO2 sources provides an insight into the port’s environmental strategy, in that environmental contaminants rarely originate from a single source, so collaborative efforts are usually required. This desire to work with partners is a common ...
This means that the diurnal variation was driven by the photolysis reactions, and improving the model would require the inclusion of other sources of the ground state oxygen atoms as well as the emission of Volatile Organic Compounds (VOCs). The role of VOCs is formation of radical intermediates...
evacuated to < 5 mTorr. Grab samples were collected using the sub-atmosphericmethod with the evacuated canisters. When the canisters were opened to the atmosphere containing the VOCs to be sampled, the differential pressure caused the sample to flow into the canister (duration of 2 to 3 min)...
Summertimedistributionsofperoxyacetylnitrate(PAN)andperoxypropionylnitrate(PPN)inBeijing:UnderstandingthesourcesandmajorsinkofPANGenZhanga,YujingMub,*,LingxiZhoua,*,ChenglongZhangb,YuanyuanZhangb,JunfengLiub,ShuangxiFanga,BoYaoaaKeyLaboratoryforAtmosphericChemistry,InstituteofAtmosphericComposition,ChineseAcademyofMeteor...