What is total phosphorus? How to monitor the total phosphorus content in water?
Total phosphorus is the result of converting various forms of phosphorus into orthophosphate after the water sample is digested, and it is measured in milligrams of phosphorus per liter of water sample. Excessive phosphorus content will cause excessive growth of algae plants, eutrophication of water body, occurrence of algal blooms or red tides, and disrupt the balance of water body. Taihu cyanobacteria incident is water eutrophication. So what method can we use to detect the content of total phosphorus in water? The total phosphorus online analyzer is used to monitor the content of total phosphorus in water. Its working principle is that polyphosphate and other phosphorus-containing compounds in water are hydrolyzed under high temperature and high pressure acidic conditions to form phosphate radicals; for other refractory phosphorus Compounds are oxidized to phosphate by the strong oxidizing agent sodium persulfate. In acidic medium, orthophosphate reacts with ammonium molybdate and antimony potassium tartrate to generate phosphomolybdenum heteropolyacid compound, which is reduced to blue phosphomolybdate by ascorbic acid. The total amount in the water sample can be obtained by measuring the absorbance. Phosphorus content. In the case of measuring phosphate, the phosphate in water can be measured directly without an oxidation reaction. Main features: The water sample pretreatment device adopts a maintenance-free design, which can ensure that the maintenance period of the pretreatment device exceeds half a year; the digestion time can be adjusted, and the measurement process and results meet the relevant standards; imported devices and innovative analysis flow path design and reagent formula Guaranteed high measurement reproducibility, the current measurement reproducibility can reach 3%; automatic operation, without personnel on duty, can realize automatic zero adjustment, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, automatic recovery, etc. Intelligent function; online monitoring methods are diversified, which can realize manual measurement at any time, automatic timing measurement, automatic periodic measurement and other measurement methods.