Almost all phosphorus in water is in the form of phosphate. They are mainly divided into orthophosphate, comprehensive phosphate and organically bound phosphate. If the content of phosphorus in the water is too high, it will cause algae to proliferate and

Soil erosion will cause a large increase in suspended matter in the water and make the river water turbid. Decreasing transparency affects the respiration and metabolism of aquatic organisms, and even causes the death of fish in the river, especially when

The hardness of water mainly refers to the amount of soluble calcium salt and magnesium salt. The amount of these two ions determines the hardness of the water. In daily natural water, rainwater is soft water, and ordinary surface water has low hardness,

In daily water quality testing, if you want to know the quantification of water pollution by organic matter, it is a more effective method to determine the ammonia nitrogen content in the water. At the same time, the self-purification status of the water

The detection of water quality and chromaticity is widely used in the chromaticity measurement of pure water plants, water plants, sewage treatment plants, industrial water, environmental protection departments, hospitals and other industries. The obvious

The manganese ion in the heavy metal is an essential trace element for human metabolism. In daily life, people can get it from plants or daily drinking groundwater. Although manganese in water quality has little effect on the human body, some other effect

When detecting the BOD of water quality, sample collection and pretreatment can directly affect the final measurement results. Therefore, when collecting samples, water quality inspectors must let the collected liquid be filled and sealed in the bottle. I

Chromium is usually found in water polluted by industrial wastewater such as electroplating, smelting, tanning, textiles, and pharmaceuticals. Usually chromium exists in water in trivalent and hexavalent forms. Hexavalent chromium is more toxic than triva

When the temperature of the tested water quality sample and the positioning solution are the same, the "positioning" remains unchanged, move the electrode clamp upwards, clean the electrode head with distilled water, and dry it with filter paper

The pH value of water is usually used to evaluate the buffering capacity of water bodies and the solubility and toxicity of metals in it. It is one of the judging indicators for natural water quality and wastewater treatment results. It is an indispensabl