2007•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of Mercury in Tobacco Material by Microwave Digestion-Hydride Generation Atomic Absorption Spectrometry

Yin Xiao

Abstract

A new method for the determination of mercury in tobacco material by microwave digestion-hydride generation atomic absorption spectrometry was studied.The sample was digested by microwave with HNO3-H2O2,and the sodium borohydride was used as the reducing agent.The mercury in samples was determined by hydride generation atomic absorption spectrometry.Under the optimal experimental conditions, the detection limit is 0.01μg/L in the linear range of 0.06—200μg/L with the relative standard deviation of 2.2%—2.9% and the recovery of 97%—104%.

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Key concepts: Hydride, Microwave digestion, Mercury (programming language), Atomic absorption spectroscopy, Detection limit, Chemistry, Analytical Chemistry (journal), Sodium borohydride