Thus, the primary reaction would be conservation, rather than consumption, of nitrogen oxide.

Most of us probably thought that nitrogen oxide was laughing gas.

There are other pollution-control devices for nitrogen oxide and mercury filters.

It won't fail as a result of nitrogen oxide emissions.

The Green Exchange also trades futures contracts in nitrogen oxide and sulfur dioxide emissions.

German magazine Wirtschaftswoche had reported earlier that VW could buy emissions rights for nitrogen oxide.

It has to be converted first to nitrogen oxide.

Many German cities exceed European Union limits on atmospheric nitrogen oxide, known to cause respiratory diseases.

FAME use could also increase nitrogen oxide emissions, although it greatly reduces other toxic emissions, it said.

The emissions cheats allowed the vehicles to pass tests meant to monitor vehicles' emissions of nitrogen oxide.

Pollution levels were monitored by experts and the results showed a substantial drop in nitrogen oxide levels.

Barcelona also leads in the amount of carcinogenic nitrogen oxide (NOx) particles the ships emit.

The scandal erupted in September when VW admitted it had rigged U.S. tests for nitrogen oxide emissions.

While diesel cars are heavily criticized for emitting nitrogen oxide, they spew out less CO2 than gasoline equivalents.

It would cut nitrogen oxide emissions by 54 percent by 2014.

It will cut nitrogen oxide emissions by 54 percent by 2014.