Electrolytic Cold Vapor Generation for Determination of Hg in Biologic Samples by Atomic Fluorescence Spectrometry

A novel sample introduction system for the determination of Hg by electrolytic cold vapor generation in a self-designed disk-type cell was reported.The signal of Hg obtained from the electrolytic cold vapor generation was similar with the signal from chemical vapor generation on the same conditions.Moreover,the carrying gas introduction place was probably important factor that it influences the atomic fluorescence intensity of Hg.When 1.0 mol/L H2SO4 was used as the catholyte and 0.8 A as the electrolytic current,the detection limit(3σ) and the RSD(n=11) was 1.2 ng/L and 1.7% for 1 μg/L Hg,respectively.This system has been applied to determine Hg in certified reference material and biologic samples.