Development Background and Influencing Factors of Multi-parameter Water Quality Detector Multi-parameter water quality detector is a new type of instrument that can detect water quality at the same time and quickly. The operation is simple and the result is accurate. It can be used simultaneously with supporting reagents. It can quickly obtain results without configuring standard solutions and drawing standard curves, which is convenient for field sampling. Research background Water is the source of life. Human beings cannot live without water in their life and production activities. The quality of drinking water is closely related to human health. With the improvement of social and economic development, scientific progress, and people’s living standards, people’s water quality requirements for drinking water continue to increase, and drinking water quality standards have been continuously developed and improved accordingly. Multi-parameter water quality detectors in the use of supporting reagents, do not need to prepare standard solution, draw a standard curve, can directly sample or diluted solution into the instrument for quantitative water quality testing, water quality test results accurate, easy to operate. Detection target Tap water Basic definition Tap water refers to water purification processes such as coagulation, sedimentation, filtration, and disinfection of fresh water in rivers and lakes by water plants. Finally, water is supplied by the pump to the user's water through the water distribution pipeline. Some countries and regions provide that they must meet the national drinking water hygiene standards. Water that does not meet water quality standards can easily cause diarrhea, cholera, typhoid fever, hepatitis, dysentery and other endemic diseases such as fluorosis and arsenic poisoning. National standard National standards stipulate that total coliforms (MPN/100mL or CFU/100mL) must not be detected; heat-resistant coliforms (MPN/100mL or CFU/100mL) must not be detected; E. coli (MPN/100mL or CFU) /100mL) Not detectable; total colonies (CFU/mL) 100. Color does not exceed 15 degrees; turbidity NTU does not exceed 3 degrees; smell and taste can not have different smell odor; visible substances can not be contained; PH 6.5-8.5; total hardness (in CaCO3) mg/L 450; iron mg/ L 0.3; Manganese mg/L 0.1; Copper mg/L 1.0; Zinc mg/L 1.0; Volatile Phenol (based on phenol) g/L 0.002; Anionic Synthetic Detergent g/L 0.3; Sulfate g/L 250; Chlorine Compound g/L 250; Solubility Total Solids g/L 1000; Fluoride g/L 1.0; Cyanide g/L 0.05; Chloroform g/L 60; Total Number of Bacteria/L 100; Total Coliform/L 3 ; Residual chlorine g/L ≥ 0.30. [1] Chlorination Most of the tap water disinfection uses the chlorination method. Chlorine gas has the advantages of good disinfection effect, low cost, and almost no harmful substances for tap water disinfection. However, after understanding and studying the theoretical data, we believe that chlorine gas is still used in the disinfection of tap water. Chlorinated tap water can produce carcinogenic substances, and experts in the area have also proposed many improvements. The safe tap water disinfection method in the world is ozone disinfection. However, this method is too expensive to process, and after ozone-treated water, its retention time is limited. As for how long it can be retained, there is not an exact concept. . So only a few developed countries use this approach. Influencing factors In the process of testing water quality using multi-parameter water quality detectors, the factors that can affect water quality detection are mainly source factors and category factors. The first is the source factor. In the ordinary work, sometimes the staff will mistake the source of the water quality sample that needs to be detected. This will lead to the inability to correctly analyze the water quality results, which will make it impossible to provide a solution to the problem. Second, for different water quality samples, different parameter detection methods should be selected on the multi-parameter water quality detector. For example, the detection methods used for surface water quality and groundwater quality are quite different. Changes in the water level, velocity and direction of the water body, and the distribution of coastal cities, industrial layout, sources of pollution and their discharge, and urban water supply and drainage conditions can be used to conduct initial sampling of ground water quality. However, the acquisition of groundwater quality is not suitable for this method. It needs to collect water samples according to the urban development, industrial distribution, and land utilization in the water quality area. If you do not correctly recognize the differences in water quality, it will affect the correctness of the water quality test results. The availability of water resources is limited, and water resources are not inexhaustible and inexhaustible. Therefore, we must pay attention to the relationship between water conservation and development and utilization. We must pay attention to thrift, and we must pay attention to open source. China has already put forward the overall requirements for building a conservation-oriented society. The "Regulations on Water Conservation Management" is also under intense drafting. It should be used as an opportunity to actively promote water-saving technologies, actively promote water-saving awareness, and vigorously increase the utilization efficiency of water resources. At the same time, strictly control the total amount of water, the implementation of water quota control and management. According to the distribution scope and carrying capacity of water resources, it correctly guides the industrial industry's agglomeration method, while at the same time saving water resources, strengthening the protection of water resources, vigorously improving the water environment and the quality of water resources, increasing the total amount of water resources available, and increasing water quality problems. Prominent and effective water-opening measures are implemented in areas with relatively abundant water resources. Multi-parameter water quality detectors are applied to the daily processing production process. 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Multi-parameter water quality detector R&D background and influencing factors