Inductively Coupled Plasma-Optical Emission Spectrometer
The Analytical Services Unit currently operate a Vista Pro-axial CCD spectrometer from Agilent (formerly Varian). This instrument is used for the simultaneous determination of metals and other elements in matrices such as soil, water, plants/tissue and paint. The instrument is equipped with a SPS-5 autosampler for rapid sample throughput.
ICP-OES instrument at the ASU Laboratory(top)
Selected Environmental Application Notes:
The use of wavelength switching and the inherent sensitivity of the instrument means that samples can be analysed for components from ppb to percent levels with little or no need for dilution. Up to in excess of 30 elements can be measured in a sample within a few minutes.Sample preparation is required to get the analytes into a solution. This is often achieved by the use of strong acids.
Screenshot of the ICP Expert I software
The instrument uses ICP Expert I software which is flexible and allows easy worksheet creation. The system when interfaced with a suitable autosampler is fully automated and can be used for after hours analysis. The after hours feature considerably increases the number of samples which can be analyzed in a day..
With CETAC Ultrasonic Nebulizer
The ASU operates a cetac ultrasonic nebulizer for water samples. With careful sample preperation, the detection limits for certain analytes can be decreased by orders of magnitude lower than with a standard pneumatic nebulizer. This attachment removes the requirement for sample concentration which is time consuming and minimizes the possibility of sample contamination.
The U5000AT+ Ultrasonic Nebulizer offers enhanced detection limits (up to 10x or greater) for ICP-AES and ICP-MS.
The Vista Pro has a robust plasma which provides signal stability, reliability and reproducibility even with complex matrices with high concentrations of dissolved solids.
Analytical Services Unit Oct 2011