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ATOMIC ABSORPTION SPECTROSCOPY WITH ONLY ONE LIGHT SOURCE – THE CONTINUUM RADIATION SOURCE - XE-LAMP An old analytical dream comes true Andrea Glomb, G.Schlemmer, H.Gleisner Analytik Jena AG, Konrad-Zuse-Strasse 1, 07745 Jena, Germany e-mail: firstname.lastname@example.org Fax + 49 3641 77-9279 AAS has become for more than 30 years a good established measuring method to detect elements in trace and ultra trace range. It is not a multielement method and despite of the development of ICP technique the AAS could assert it's position in the range of inorganic analytical techniques. The reasons are some advantages like low operational costs, fast measuring readiness and to be mainly free of interferences. However one disadvantage was existing – it is a single method with the must of an element specific light source. With the Continuum Source AAS this disadvantage is gone! This lecture describes the new chance of a continuum light source over the whole wavelength range as one of the main features of the new generation of AAS instruments, the contrAA. The contrAA of Analytik Jena uses a Xenon short arc lamp as continuum light source. A high resolution Echelle monochromator is used for the required spectral resolution. This resolution can be very impressive demonstrated for example with the Manganese triplet. An UV sensitive CCD line detector is working as detector. The combination of these parts of the spectrometer guarantee a high number of new and unique features, unknown in the atomic absorption so far. 1. Flexibility – each and each line of the element, important in the AAS, can be determined 2. Fast sequential multielement analysis 3. High dynamic range and improved linearity 4. improved signal to noise ratio 5. real simultaneous background correction With the robustness, elementariness and low operational costs of an AAS and the velocity, variability and efficiency of an ICP the contrAA closes the gap between both techniques and becomes an interesting alternative for a high number of applications. The lecture includes the introduction of the new kind of continuum source spectrometer and some interesting applications demonstrating the new possibilities in AAS.
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