GB/T 7480-1987
ActiveWater quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid
水质 硝酸盐氮的测定 酚二磺酸分光光度法
Application Summary AI generated
This standard specifies a spectrophotometric method using phenol disulfonic acid to determine nitrate nitrogen in water samples. It is applied in environmental monitoring and water quality testing laboratories for analyzing surface water, groundwater, and wastewater. The method is particularly used to assess nitrate pollution levels in compliance with Chinese environmental regulations.
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