1.   Also a film presents less surface area to a chemical than does particulate matter.

2.   Images of the fed patterns after the ingestion of a test meal showed good separation of solid and liquid particulate matter and mixing waves in the gastric body.

3.   The new standards cut emissions of carbon monoxide, nitrogen oxides, gaseous hydrocarbons and particulate matter.

4.   By the end of this month the EPA is expected to recommend new standards governing concentrations of ozone and particulate matter.

5.   Conditions have been ideal over the past few days for a buildup of dangerous pollutants like ozone, carbon monoxide and particulate matter.

6.   Diesel fuel and gasoline emit large amounts of particulate matter.

7.   Diesel fuel produces more potentially hazardous pollution, known as particulate matter, than natural gas.

8.   Emissions of sulfur dioxide, particulate matter and other pollutants will also be cut, he said.

9.   Edmond and his research group tracked oceanic particulate matter, trace elements and radioisotopes.