Mass Spectrometry & Spectroscopy 9
Using the Power of Atomic Fluorescence Spectroscopy for Ultimate Detection Performance
Powerful Package for Sample Prep to XRF Analysis
Retsch, a leading solution provider for sample homogenisation and characterisation, has added a new pellet press to its product range. The PP 35 is a compact benchtop model which uses a maximum pressure force of 35 tons to produce smooth and stable pellets suitable for XRF analysis.
Before the sample can be pressed to a pellet, it needs to be ground to a homogeneous fi neness below 100 microns. The MM 400 mixer mill is ideally suited for homogenising up to 8 x 30 ml sample material quickly and reproducibly. If the sample needs to be mixed with a binding agent for stability, this can be done in conical centrifuge tubes which are clamped into a special adapter.
For the homogenisation of larger volumes of hard and brittle sample materials, Retsch offers two models of Vibratory Disc Mills, RS 200 and RS 300 XL. These achieve grind sizes below 100 microns within seconds and are therefore highly suitable for pulverising samples for pelletising. Pellet presses with 25 t and 40 t maximum pressure force complete Retsch’s offering for quick and reproducible preparation of XRF samples.
To ensure accurate and reproducible XRF analysis results, the sample needs to have a uniform particle size distribution and the pellet needs to be as dense as possible. Both requirements are easily met when using Retsch’s powerful package for sample preparation to XRF analysis.
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Coupling Atomic Fluorescence Spectroscopy (AFS) with either cold vapour generation or hydride generation has been P S Analytical’s (PSA) core competency for over 30 years.
For the determination of mercury, arsenic, selenium, antimony and bismuth, PSA offers some of the best instrumentation available.
PSA analysers provide excellent detection performance including ultra-trace limits of detection, a linear response over several orders, and minimised interferences from other matrix components. PSA’s unique fl ow cell design, removing troublesome glass or quartz material, results in reduced carryover for faster throughput and less re-runs. Ease of use, reliability and robustness as well as very affordable running costs are hallmarks or the PSA brand.
PSA works with many industries, organisations and markets to deliver industry leading equipment and solutions. The systems are used to determine analytes in; waters, soils, sediments, air, stack gas, blood, urine, food and beverage, minerals and many other sample matrices.
In recent years PSA has expanded the analytical offerings by developing on-line systems particularly waste water and petrochemical applications for both liquids and gases.
Determinations of mercury in petrochemical application (liquids and gases) have a unique set of requirements, particularly in sample handling and PSA has developed a range of analysers and accessories to facilitate this complex analysis.
With literally thousands of systems in the fi eld today, and support networks in Europe, USA and SE Asia, PSA offers the ideal package of performance, reliability and support.
For further information visit
www.psanalytical.com.
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