PS Analytical have designed MILLENNIUM EXCALIBUR Analyser to be able to measure low ppt levels of Arsenic, Selenium, Antimony, Bismuth and Tellurium.
This is possible and easy to do by a simple lamp change via the easy access lamp chamber. The instrument combines the advantages of vapour generation techniques which removes most interference with the sensitivity and selectivity of atomic fluorescence spectrometry. Atomic fluorescence spectrometry gives the added advantage of excellent linearity which in this case is over 5 orders of magnitude. Detection levels of 10ppt for As and Sb and 2ppt for Se are readily achieved. With the use of an optimised multi-reflectance filter detection levels of 10ppt can also be realised for Te and Bi.
Speciation is important to monitor levels of individual species as the toxicity of certain elements depends very heavily on their physico-chemical form. PSAnalytical offers a simple method to separate and quantify the present species, using HPLC short column coupled to hydride generation atomic fluorescence spectrometry (HPLC-HGAFS), using the Millennium Excalibur system for the post-column reaction and detection.