Total phosphorus automatic monitorIt is an instrument used to determine the total phosphorus content in water samples. The determination process generally includes the following steps:
Sampling: Water samples are collected into the instrument, which can be achieved by automatic sampling or manual sampling.
Digestion: The collected water samples are digested under high temperature and pressure conditions to convert all the organic and inorganic phosphorus into a measurable phosphate form.
Reaction: The digested water sample is reacted with a specific reagent so that the phosphate in it and the reagent produce a substance with a specific wavelength.
Measurement: The spectral intensity of the substance is measured using spectroscopy or spectrophotometry to determine the concentration of phosphate.
Calculation: Based on the measurement results and the concentration of the reagent, the amount of total phosphorus in the water sample is calculated.
The advantage of the total phosphorus automatic monitor is that it can realize continuous monitoring and automatic operation, which improves the accuracy and efficiency of the measurement. At the same time, the instrument has high precision and high sensitivity, which can detect low concentration of phosphorus content, and meet the requirements of environmental protection monitoring and wastewater treatment.
Principle of total phosphorus automatic monitor:
The mixture of water sample, catalyst solution and strong oxidant digestion solution is heated to 115, and polyphosphate and other phosphorus-containing compounds in the water sample are digested and oxidized by strong oxidant under acidic conditions of high temperature and high pressure to form phosphate, in the presence of catalyst, phosphate ions are generated in a strong acid solution containing molybdate, a colored complex is generated, and the analyzer detects the change of this color, and converts this change into total phosphorus value output. The amount of colored complexes formed is equivalent to the amount of total phosphorus.