Mercury (Hg) is a naturally occurring element (Hg on the periodic table Hg0) that is found in air, water and soil. It exists in several forms: elemental or metallic mercury, inorganic mercury compounds, and organic mercury compounds

The established principles for measuring mercury . Which this lower concentrations (ppb, sub ppb) is also a problem in the analysis As the use of analytical equipments such as General Atomic Absorption Spectroscopy (AAS), ICP-Optical Emission Spectroscopy (ICP-OES) and ICP-Mass-Spectroscopy (ICP-MS) analysis of the non-stable of precision , accuracy and sensitivity. The new technology base on Atomic Absorption Spectroscopy (AAS) and Atomic Fluorescence Spectroscopy (AFS) use a mercury analyzer with high precision , accuracy and specificity.

This method use analyze the samples of mercury contamination. Analytical techniques 3 class for measuring mercury , so the choice of method depends on the form and status of the sample. To be analyzed.

1. Direct Thermal Decomposition Mercury Analyzer ; Atomization of a compound under high temperature to transform it into its free-radical state . Than Amalgamation is the alloying and collection of one metal to another. Since mercury (Hg) and gold (Au) amalgamate well with each other, therefore, each is used together to purify one another. And measuring Hg by technique Cold Vapor Atomic Absorption Spectrometer.

2. Reducing Vaporization Cold Vapor Atomic Absorption ; sample (after digestion ) broken down into divalent mercury ion (Hg2+ ) when it adds a reducing agent (stannous chloride or sodium borohydride ) to this sample subjected to wet pretreatment, the divalent mercury ion (Hg2+ ) is reduced to zero-valent metallic mercury and turns in to mercury gas by bubbling. And measuring Hg by technique Cold Vapor Atomic Absorption Spectrometer.

3. Elemental vapor phase mercury ; The sample gas directly into the absorption measuring Hg by technique Cold Vapor Atomic Absorption Spectrometer.