Building national emission inventories of toxic pollutants in Europe

National Emission Standards for Hazardous Air Pollutants

Criteria air pollutants and toxic air pollutants.

This review presents a brief overview of the health effects and exposures of two criteria pollutants--ozone and particulate matter--and two toxic air pollutants--benzene and formaldehyde. These pollutants were selected from the six criteria pollutants and from the 189 toxic air pollutants on the basis of their prevalence in the United States, their physicochemical behavior, and the magnitude of...

Environmental impact of toxic pollutants.

A pollutant is any natural or unnatural material that is present in the environment at unnaturally high levels. Concern about pollution is meaningful only in the context of a pollutant’s impact on the biosphere. How a pollutant affects the biosphere has been conventionally characterized in terms of easily quantifiable measures such as the chemical oxygen demand (COD), biochemical oxygen demand ...

Status of national wetland inventories in Africa

An analysis of wetland inventory undertaken in Africa was conducted during 1998/99. This was part of a global project to examine the extent of wetland inventory and provide best estimates of the extent of wetlands. The best estimate for Africa was a total area of wetlands estimated as ca. 123 000 000 ha, covering about 4% of the land surface. More than 85% of the area (ca. 107 500 000 ha) of th...

Control Strategy For Toxic Pollutants