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Study: consumer products overtake transportation as largest source of VOCs air pollution in cities

Green Car Congress

Recent research suggests that adverse human health effects occur below current US standards for both PM 2.5 Thus, it is important to identify and quantify the most important human-produced sources of VOC emissions to effectively mitigate air pollution and improve human health, the authors said. Click to enlarge.

Pollution 264
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Should we be encouraging EVs or discouraging old smoking cars that are the most polluting? | Opinion

EV Central

I recently read a brilliant book, Malcolm Gladwells, Revenge of the Tipping Point that alerted me to the fact that just five per cent of the passenger vehicles on the road produce more than half of all the pollution in the air. Pollution would drop by the same amount as the 10 per cent shift.

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UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

Data presented as mean ± standard deviation, N=3. the E30 and E78—led to statistically significant reductions of 9%–13% for total hydrocarbon (THC); 13%–44% for non-methane hydrocarbon (NMHC); 20%–35% for carbon monoxide (CO); and 17%–36% for nitrogen oxides (NO x ) emissions compared to the high-aromatics E10 fuel.

Pollution 255
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Study finds some improved cookstoves may emit more black carbon pollution than traditional mud cookstoves

Green Car Congress

In this plot, a red star under the boxes means that the mean values for hardwood and mixed fuel tests are statistically different for that stove technology class (at the 95% confidence level, p. In this regard, this study highlights the need for repeated tests to confirm statistical significance of mitigation potential.

Pollution 231
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Murine study finds even low level exposure to PM10 pollution is harmful to lungs

Green Car Congress

Air pollution is a ubiquitous problem and comprises gaseous and particulate matter (PM). However, the majority of such models represent high levels of exposure and are not representative of the exposure levels in less polluted countries, such as Australia. To understand the mechanisms involved, animal models are often used.

Pollution 186
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UB study finds link between ambient ozone exposure, artery wall thickness

Green Car Congress

We used statistical models to capture whether there are significant associations between ozone exposure and these outcomes. While the study finds an association between air pollution and atherosclerosis, researchers aren’t clear on why. —Meng Wang. Ozone, however, is much trickier, Wang notes. —Meng Wang. Meng Wang, Paul D.

Ozone 311
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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

The vehicle test matrix had provisions for five vehicles on each emissions standards category (i.e., The test fleet showed statistically significant effects for some pollutants, but not for others. The weighted NMHC emissions showed a marginally statistically significant reduction of 9% for E15 compared E10.