Specific Ultraviolet Absorption

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Specific Ultraviolet Absorption (SUVA) at 254 nanometers (nm), an indicator of the humic (Natural organic matter- NOM) content of water. It is a calculated parameter obtained by dividing a sample's ultraviolet absorption at a wavelength of 254 nm (UV 254) (in m =1) by its concentration of dissolved organic carbon (DOC) (in mg/L).

The presence of humic acid in water intended for potable or industrial use can have a significant impact on the treatability of that water and the success of chemical disinfection processes. Accurate methods of establishing humic acid concentrations is therefore essential in maintaining water supplies

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