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    Home > Technical Information

    Water quality-Determination of nitrite nitrogen-Spectrophotometric method

    Source: Author: Time: 2018-03-14 Views: Times

    Water quality-Determination of nitrite nitrogen-Spectrophotometric method

    Water quality-Determination of nitrogen (nitrite) -Spectrophotometric method

    (Implemented in GB 7493-87 1987-08-01)

    This standard is equivalent to the ISO 6777-1984 "Molecular Absorption Spectrophotometric Method for the Determination of Nitrite Nitrogen in Water". This standard technically modifies and supplements the ISO 6777-1984 standard according to the format of China's standards. This standard specifies the spectrophotometric method for the determination of nitrite nitrogen in drinking water, groundwater, surface water and wastewater.

    Water quality--Determination of nitrite nitrogen--Spectrophotometry (GB 7493-87)


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