Thermo Fisher Scientific has incorporated capabilities in the Icap 6000 series of ICP emission spectrometers to achieve dependable monitoring of elemental contaminants in biodiesel.
The dedicated radial plasma view configuration of the Icap system provides enhanced analytical capabilities for important elements such as sulphur and phosphorus.
The enhanced matrix tolerance (EMT) torch and swing frequency RF generator handle organic matrix samples and ensures improved stability.
The vast majority of biodiesel production plants currently use plant oils as a starting material for production.
However, these plants usually have relatively high phosphorus content, which is undesirable in fuels as it can lead to the corrosion of mechanical components of engines.
Sulphur also affects engine wear if present in excess concentrations in the starting materials and causes environmentally harmful sulphur dioxide emissions.
EN 14214 and ASTM D6751 standards have been introduced specifying the requirements for biodiesel and its analysis.
These documents require that the concentrations of elemental contaminants in biodiesel are regularly monitored and specify the method for its analysis - to ensure optimum engine performance and reduce environmental impact.
This is especially important in the aviation industry, a predicted growth area of biodiesel, where the first commercial airline flight using biofuel took place in February 2008.
Traditionally, axial view ICPs have been the configuration of choice for ICP emission spectrometers used to perform biodiesel analyses because of their perceived lower detection limits.
Owing to the nature of its dedicated radial view plasma and the elimination of carbon-based emission interferences associated with the axial view configuration, the Icap 6000 series is a powerful alternative.
This configuration demonstrates improved detection limits for lower concentrations of samples and is capable of providing accurate analysis of phosphorus, sulphur and potassium.
This is a crucial benefit as, according to the regulations, detection limits must be 10 times below the regulated concentration levels to provide sufficient margin to ensure a sensitive measurement.
Additionally, the Icap 6000 series ICP emission spectrometers have full wavelength coverage from 166 to 847nm with full frame capability, offering full spectrum trend analysis and contamination identification between batches of biodiesel produced.
The systems are fitted with a fourth generation CID detector, which offers a wide dynamic range and resistance to saturation.
The Icap 6000 series incorporates fully automated wavelength calibration and offset correction capabilities for long-term stability.
The instrument's distributed purge system offers reduced gas consumption.
The ergonomic design of the spectrometers, which includes a large, wide-opening door, enables easy access to the sample compartment and peristaltic pump, making routine maintenance simpler and quicker.
