However, campaigners believe this would compound London's air quality problems, as although modern diesel cars emit lower levels of CO2, they emit higher levels of oxides of nitrogen (NOx) which can exacerbate heart disease and respiratory illnesses such as asthma.
Brain development is also compromised, and several studies link exposure to particulates, and oxides of nitrogen (NOx) to delayed neurocognitive development and lower IQ (See pages 34-41 of the RCP report).
The government should respond immediately by giving Mayor Johnson full responsibility for complying with limit values for dangerous airborne particles (PM10s) in London; publishing its plans for complying with legal standards for nitrogen dioxide (NO2) and oxides of nitrogen (NOx); and communicating clearly estimates for the number of premature deaths due to poor air quality," said Birkett.
"Engine combustion optimization, the effective after-treatment of exhaust gases with oxidation catalysts and particulate filters, and the latest developments for the after-treatment of nitrogen (NOx) have been the focus of our technical development," the automaker said.
The justice department said in a statement last Monday that the vehicles – certain Volkswagen, Audi and Porsche models equipped with 2- and 3-litre diesel engines – had emitted as much as 40 times the accepted level of oxides of nitrogen (NOx) into the atmosphere.
The real problem with diesels in this country is that they emit more oxides of nitrogen (NOX), that soot you see spewing out the back of city buses.
Benzene, 1,3-butadiene, formaldehyde, and acetaldehyde were the focus pollutants, with oxides of nitrogen (NOx) estimated for comparisons.
Reductions in anthropogenic primary PM2.5 and oxides of nitrogen (NOx) showed the greatest impact on PM2.5 concentrations.
The gases examined in this study were oxides of nitrogen (NOx), carbon dioxide (CO2) and carbon monoxide (CO).
Flue gas recirculation (FGR) is a well-known method used to control oxides of nitrogen (NOx) in industrial burner applications.
In the summer, orchards in California experience high levels of tropospheric ozone, formed by reactions of volatile organic compounds (VOC) with oxides of nitrogen (NOx).
