Abstract
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 µg L − 1 (compared to 2.1 µg L − 1 for a previously reported system in the absence of trapping) with a precision of 11% for a 10 µg L − 1 mercury standard (RSD, N = 5).
Published Version
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