Study finds vehicles more important source of urban atmospheric ammonia than farms
Green Car Congress
MARCH 31, 2017
Vehicle tailpipes are a more important source of ammonia’s contribution to urban air pollution than is agriculture, according to a study by researchers from the US and China. ppbv/ppmv) to the US cities, less developed Chinese cities show higher emission ratios (0.44 Tg/yr), while Chinese NH 3 vehicle emissions (0.09 ± 0.02
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