Detection method 1: Using periodate oxidation spectrophotometry, a certain amount of sulfuric acid and nitric acid are added to a certain volume of water sample. At a certain temperature, all solid manganese elements in the water sample are converted into ionic manganese. The pH value of the solution is adjusted, and then a buffer solution is added. Finally, a strong oxidizing agent is added to oxidize all manganese of different valence states into manganese of the highest valence under this condition. The solution system is purple-red. The absorbance value of the color system is detected to calculate the concentration of total manganese.
Detection method 2: Using formaldehyde oxime spectrophotometry, in an alkaline solution of pH 9.0~10.0, manganese (II) is dissolved and oxidized to manganese (IV), and forms a brown complex with formaldehyde oxime. The absorbance value of the color system is detected to calculate the concentration of total manganese.
Modular design, good instrument scalability
The instrument can switch monitoring parameters by simply replacing reagents and switching programs, which has good scalability.
Good quality control measures to ensure the reliability of monitoring results
The instrument has many functions, including standard sample verification, zero point verification, span verification, zero point calibration, standard sample calibration, automatic calibration of working curve, and automatic test of spike recovery rate.
The instrument can be controlled remotely.
The instrument has automatic fault alarm function, such as component failure alarm, over-range alarm, abnormal data alarm, reagent shortage alarm (water sample, distilled water, reagent), and can record and upload these faults.
The instrument is safe, intelligent and easy to maintain.
It has the functions of regular automatic cleaning and automatic calibration.
It has the function of automatic range switching according to water sample concentration.
It adopts an embedded operating system Linux, and runs efficiently.
The insulation resistance between the power supply lead and the casing of the instrument is not less than 20 MΩ.
Data transmission meets national standards.
The instrument has remote reverse control function, two-way data transmission function and working status output function.
It has RS-232, RS-485, RJ-45 standard communication interface, and the instrument communication protocol meets the requirements of H/T 212-2017.
It can be applied to surface water, groundwater, seawater, drinking water sources, pollution sources, industrial wastewater, domestic sewage and other water monitoring.
31/F, Tower Two, Times square, 1 Matheson Street, Causeway Bay, Hong Kong
86 (0)731-89736888
overseas@lihero.com
