FI-HG-Electrothermo-atomic Absorption Spectrometric Determination of Traces of Mercury in water

In an acidic solution,mercury of different states present in water sample was oxidized to divalent state by potassium permanganate or bromate.The method,by hyphenation of flow-injection technique and hydride generation with thermo-atomic absorption spectrometry,was used for the determination of mercury in the sample solution.Linearity range of the method was found in the range of 0.2-15 μg·L-1 with correlation coefficient of 0.999 9,when measured at the wavelength of 253.7 nm.Detection limit (3σ) of the method was found to be 0.094 μg·L-1.Test for recovery was made by standard addition method on the base of substantial water sample,giving values of recovery in the range of 95.7% to 104.6%.