GB/T 9735-2008 《Chemical reagent - General method for the determination of heavy metals》 Related products

This standard specifies a general method for the determination of heavy metals in chemical reagents using visual colorimetry in acetic acid media, suitable for the detection of heavy metals in lead. The standard covers Colorimetry of saturated hydrogen sulfide aqueous solutions and Colorimetry of sodium sulfide-glycerol, with detection ranges of 0.3 µg/mL 2 µg/mL and 0.4 µg/mL 3 µg/mL, respectively. This standard updates the 1988 version with the addition of sodium sulfide-glycerol detection methods, providing more comprehensive guidance for the quality control of chemical reagents.