Abstract
In this paper we wish to demonstrate the multi-element capability of Laser Enhanced Ionization (LEI) in flames by reporting the detection of 15 different elements. All the elements were excited by the fundamental or the first harmonic frequency-doubled light from one single dye in the laser system (Coumarin 47). Detection limits below the ppb region (parts-per-billion, ng/ml) were achieved for 13 elements (Al, Bi, Ca, Cd, Co, Cr, Fe, Ga, Li, Ni, Pb, Sr, Tl). The detection limits reported here are for several elements orders of magnitude superiour to those for existing comparable flame based spectroscopic methods. For 9 elements, the detection limits are found to be lower than any previously reported values for one-step LEI in flames.
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