
Workplace pollutants. Source: SPD image library
Workplace pollutants come in various forms. While solids and liquids are usually clearly visible, it’s not always easy to know whether toxic vapours and gases are present.
Solids are the least likely to affect you unless they come into direct contact with skin or are eaten. Exposure to heat can convert solids into other, more toxic forms. For example, burning solids can create toxic gases; handling them can create dust.
Dusts include materials which normally come in dust form and dust created by workplace processes. It’s not always possible to detect fine dust in the air.
Liquids include acids, solvents and liquid metals like mercury. Flammable liquids can create toxic vapours, gases and dust during combustion.
Vapours and gases directly affect air quality and can also be flammable or explosive.

Workplace pollutants. Source: SPD image library
Workplace pollutants come in various forms. While solids and liquids are usually clearly visible, it’s not always easy to know whether toxic vapours and gases are present.
Solids are the least likely to affect you unless they come into direct contact with skin or are eaten. Exposure to heat can convert solids into other, more toxic forms. For example, burning solids can create toxic gases; handling them can create dust.
Dusts include materials which normally come in dust form and dust created by workplace processes. It’s not always possible to detect fine dust in the air.
Liquids include acids, solvents and liquid metals like mercury. Flammable liquids can create toxic vapours, gases and dust during combustion.
Vapours and gases directly affect air quality and can also be flammable or explosive.