GB/T 7469-1987 《Water quality--Determination of the total mercury--Potassium permanganate-pootassium peralfate descomposed method--Dithizone spectrophotometric method》 Related products

This standard applies to the determination of total mercury in domestic sewage, industrial wastewater and surface water contaminated with mercury. After potassiumhy permanganate and potassium persulfate digestion, the mercury content is determined by the disthiohydrazone Spectrophotometric method, spec-trophotometry, with a measurement range of 2 μg/L to 40 μg/L. This method can effectively eliminate the influence of interfering substances on the results and is suitable for accurate determination of low-concentration mercury content.