This document specifies a rapid on-site monitoring spectrophotometric method for the determination of hexavalent chromium in water. This document is suitable for on-site rapid determination of hexavalent chromium in surface water, groundwater, domestic sewage and seawater, but is not suitable for on-site rapid determination of hexavalent chromium in industrial wastewater. When the injection volume is 10mL and the detection optical path is 30mm, the detection limit of this method is 0.005mg/L, the lower limit of determination is 0.020mg/L, and the upper limit of determination is 0.500mg/L. When the sample concentration is higher than the upper limit of determination, measure after dilution.
T/GXAS 497-2023 history
2023T/GXAS 497-2023 Water quality—Determination of hexavalent chromium —Rapid monitoring in the field spectrophotometric method