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Respirable
Suspended Particulates
RSP are the
proportion of suspended particulates
with a nominal aerodynamic diameter of 10 micrometres or smaller
and they have the ability to penetrate deeply into the lungs. Depending
on their sources and the existing meteorological conditions, RSP can be
made up of a number of different constituents.
Particulates
constituents
The RSP consists of a number of components,
including salts (such as nitrates, sulphates), organic chemicals, metals, and soil or dust particles.
Organic chemicals and sulphates are the main contributor to the RSP mass concentrations.
A number of constituents of RSP and their sources are given in the
table below.
Chemical
constituent
|
Source
|
| Silicon,
aluminum, calcium, manganese and iron |
Soil/crystal
and construction activities |
| Vanadium
and nickel |
Oil
fired combustion |
| Cadmium
and hydrocarbons |
Incineration
|
| Carbon,
lead, bromine and hydrocarbons |
Vehicle
emissions |
| Sodium,
chloride, magnesium, and potassium |
Marine
aerosols |
| Nitrates,
sulphates and ammonium |
Secondary
pollutant formation |
|
Other chemicals in RSP that are
tested by the EPD are barium, copper, zice, beryllium, mercury, chromium, arsenic
and selenium.
To see what
RSP consist of, please click the following icon.
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