Leeder Analytical provides testing services for crude oil, synthetic and mineral oils, petroleum fuels, shale oil, lubricants and petroleum samples. We can determine both their chemical composition and physical properties that you may require.
At Leeder Analytical, our analysts are a team of petroleum specialists providing oil analysis, fuel analysis, gas analysis and petroleum testing.
Oil testing analysis is an important activity when you need information on oils specific properties and characteristics. Composition analysis is used in a wide range of industries including the petroleum, environmental and occupational hygiene areas.
Physical Oil Testing
There are a wide range of physical testing available. These include flash point, viscosity, oil density, boiling point, simulated distillations, surface tension, pour point, freeze point, congealing point, colour, etc.
Oil Spill Dispersant Testing
Oil Spill Dispersant Effectiveness testing is essential to making informed decisions for the potential use of dispersants, testing their efficacy and checking on use-by dates, etc. This could form part of an oil spill preparedness plan.
Chemical dispersants can be tested to determine their effectiveness on particular crude oils under different environmental conditions such as air temperature, water temperature, seawater salinity, wind speed, wave height and at different degrees of oil weathering. There is not a single chemical dispersant that is effective on all crude oils.
Several tests are available for assessment including the rotating flask test and also the Mackay Nadeau Steelman (MNS) dispersant performance test is used to determine how well various chemical dispersants work on various types of oils under given conditions, water salinities and temperatures.
This method is believed to simulate ocean conditions more accurately than shaking, stirring or pumping methods.
The relative performances of different chemical dispersants are tested under the same environmental conditions of the crude oil.
Dispersant effectiveness is best tested over a wide range of environmental conditions and on weathered oils at various time periods as this also impacts on dispersant choice.
Dispersant or oil dose ratios can be tested so that dose efficiency curves can be produced.
The ‘window of opportunity’ for dispersant use can then be determined.
The Australian Maritime Safety Authority (AMSA) recognises the Mackay Dispersant Performance test as the only efficiency test acceptable.
For more information about our Dispersant Testing read more here, Dispersant Testing
Oil Weathering Studies
At Leeder Analytical oil weathering studies are used to determine the potential impacts and behaviours of crude oils in the environment. Weathering methods are utilised to determine both physical and chemical changes that may occur to spilt oils, under a range of conditions over time. This information helps with oil spill planning and determining the most appropriate course of action if required. It is often too late if a spill occurs and this vital work has not been done.
Weathering methods include:
- Evaporation- % evaporative loss over time
- Natural Dispersion
- Emulsification and Biodegradation
Variables considered in weathering processes include:
- Composition of spilt oil
- Duration of the weathering process
- Oil type
- Sea and air temperature
- Wave action
Via analysis of samples taken throughout the weathering process, it is possible to determine changes in the physical and chemical characteristic of the oil.
For more information about our Weathering Studies read more here, Hydrocarbon Weathering
Hydrocarbon fingerprinting can provide the identification of petroleum types such as leaded and unleaded petrol, kerosene, diesel, aviation fuel, marine diesel fuel, bunker fuel, crude oils, condensates, lubricating oils and mixtures of these etc.
Hydrocarbon Fingerprinting provides information on:
- Product type, whether a single product or a mixture is present
- Identification of specific chemical biomarkers and additives
- Product age estimation, based on degradation of a range of compounds
- Weathering which can be through biodegradation, volatilisation and/or water washing
This information can be valuable in the determination of environmental risk, determining responsibility for site contamination, identifying possible sources of contamination and can be used to help determine the best approach to remediate.
Why perform Hydrocarbon Fingerprinting?
Leeder Analytical provides legally defensible data with accurate results to assist with investigations, identification of source contamination such as, petrogenic/biogenic, single or multiple sources of contamination and the determination of the timeframe in which contamination may have occurred.
For more information about our Hydrocarbon Fingerprinting read more here, Hydrocarbon Fingerprinting