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Total Mercury Determination in Water by CVAAS - Water and Wastewater
Introduction: The determination of mercury in water is one of the most frequently requested analyses for environmental, sanitary and technological purposes. Lumex Instruments RA-915M mercury analyzer, equipped with a special cold vapor accessory, can perform conventional cold vapor atomic absorption spectrometry (CVAAS) technique for the determination of mercury in surface, ground, drinking and waste water as well in atmospheric precipitation.
The method is based on the cold-vapor technique (CVAAS). Samples of natural and waste water must be pre-treated using the appropriate standard digestion procedures. Detection limit (DL) is 0.00005 ng of Hg which corresponds to 0.0001 μg/L (0.1 ng/L) for sample volume 5 mL. The working range of the method is determined by the measured mercury concentration in the blank sample and starts from 50 % of ?blank value.