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Diesel Particulate Testing

Diesel emissions are a complex mixture of particulate matter and gaseous components.

The particulate component comprises solid carbon cores, produced during the combustion process, with a range of organic carbon compounds condensed onto the solid nucleus, as well as some metallic compounds. More than 90 per cent of the carbon particulates are respirable, having diameters of 1 μm or less, which are capable of entering the deepest regions of the lungs.

The gaseous components include water vapour, oxides of carbon (CO, CO2), and oxides of nitrogen (NOx), volatile organic compounds, and unreacted gases from air such as nitrogen. Morphology and structure.

The high surface area to volume ratios of the core particles of DPM mean they absorb significant quantities of hydrocarbons originating from the unburnt fuel, lubricating oils and compounds formed during the combustion cycle (Figure 1). More than 1,800 compounds have been identified, including polycyclic aromatic hydrocarbons, condensed liquid hydrocarbons, metals and sulphate compounds.

Diesel Particulate Testing

Figure 1 Schematic representation of DPM (after Twigg and Phillips, 2009)

Our Services

Testing of Exhaust Components

Testing of
Exhaust
Components

Diesel Particulate Testing

Diesel
Particulate
Testing

Dust Monitoring

Dust
Monitoring

Noise Monitoring

Noise
Monitoring

Respirator & Earplug Fit Testing

Respirator
& Earplug
Fit Testing

Water Testing

Water
Testing

Self-Rescuer Testing

Self-Rescuer
Testing

Air Quality Testing – Spray Booth

Air
Quality
Testing

Lighting Surveys

Lighting
Surveys