The alkaline potassium persulfate digestion and ultraviolet spectrophotometry is adopted for WS1505 online automatic water quality monitor for total nitrogen content. Potassium persulfate is used as an oxidant for digestion at 125℃ for 15-30min, so that nitride is transferred to nitrate ions. In a strong acid environment, the developer reacts with nitrate ions and is determined by the spectroscopy at the characteristic absorption wavelength.
The three-stage precision photoelectric metering device is used to realize fast and accurate reagent extraction and greatly reduce the impact of peristaltic pump tube aging;
the precise temperature compensation algorithm and ambient light elimination measures can keep the accuracy consistently regardless of in spring, summer, autumn and winter;
highly reliable reagent selection valve and digestion bottle assembly has a low failure rate and low maintenance workload;
the functions of complete digestion pressure testing protection, temperature protection and liquid leakage alarm can guarantee safe operation of the equipment.
Sewage treatment plant, corporate sewage outlet, water station