Journal
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Volume 64, Issue 9, Pages 925-927Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2009.08.002
Keywords
Mercury; UV photolysis vapor generation; In-atomizer trapping; Graphite furnace atomic absorption spectrometry
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Generation of mercury vapor by ultraviolet irradiation of mercury solutions in low molecular weight organic acid solutions prior to measurement by Atomic Absorption Spectrometry is a cheap, simple and green method for determination of trace concentrations of mercury. In this work mercury vapor generated by ultraviolet photolysis was trapped onto a palladium coated graphite furnace significantly improving the detection limit of the method. The system was optimized and a detection limit of 0.12 mu g L-1 (compared to 2.1 mu g L-1 for a previously reported system in the absence of trapping) with a precision of 11% for a 10 mu g L-1 mercury standard (RSD, N = 5). (C) 2009 Elsevier B.V. All rights reserved.
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