ResourceSpectroscopy
Biodiesel Analysis for Inorganic Contaminants Using the Optima 8000 ICP-OES with Flat Plate Plasma Technology
20 Nov 2012The presence of elements such as calcium, magnesium, sodium and potassium in biodiesel and biodiesel blends is problematic for combustion engines as they many adversely affect the quality of the fuel, engine wear or emissions. In addition phosphorus and sulfur are potential catalyst poisons for emission control systems utilizing catalytic converters. The maximum permissible limits for these elements are specified in ASTM D6751. This application note demonstrates that the PerkinElmer Optima 8000 ICP-OES with Flat Plate plasma technology is particularly well suited for the analysis of organic samples such as biodiesel.
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Atomic Absorption / Emission SpectroscopyAtomic absorption spectroscopy (AAS) and atomic emission spectroscopy (AES) — also called optical emission spectroscopy (OES) — are used to detect the elemental constituents in samples. Both techniques involve the atomization of a sample. Atomic absorption spectrometers may use a flame or furnace to create an atomic vapor of the sample before irradiation with spectral light. Optical emission spectrometers may use a flame, inductively coupled plasma (ICP), microwave plasma (MP) or spark arcs to atomize and excite the sample. At higher excitation energies, electrons can be emitted instead of photons, which can be useful for samples that can’t be atomized and for surface analysis. Explore electron spectroscopy equipment such as Auger spectrometers and photoelectron spectrometers for surface elemental analysis of samples. Find the best atomic absorption, photoelectron and optical emission spectrometers in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity. Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Astm MethodsSulfurCalciumBiodieselContamination PreventionContamination prevention aims to control and minimize the risk of contamination during experiments. Biological safety cabinets and sterilization equipment are examples of technologies used to prevent contamination.