Water quality heavy metal pollution mainly refers to substances such as lead, zinc, nickel, chromium, mercury, etc. At present, a large part of the existing water pollution is heavy metal pollution. They are mainly caused by the illegal discharge of indus

At present, the rapid detection of water quality mostly adopts spectrophotometry, which is an analysis method established based on the selective absorption of light by the measured substance. It is mainly used to detect the content of trace components in

Spectrophotometry is an analysis method established based on the selective absorption of light by substances, so it is also called absorbance spectroscopy or absorption spectroscopy. Solutions of many substances are colored. For example, KMnO4 aqueous sol

We have introduced to you that the over-iodometric method is suitable for relatively clean water quality testing. If the tested water sample contains oxidizing and reducing substances, as well as excessive suspended solids, it will interfere with the fina

Everyone knows that cyanide is a highly toxic substance. Its toxicity in the human body is mainly combined with ferricytochrome oxidase to produce cyanide ferricytochrome oxidase, which causes cells to lose the function of transmitting oxygen, thereby cau

In the precipitation titration water quality detection, the Mohr method is a commonly used measurement method. It uses potassium chromate (K2CrO4) as an indicator and silver nitrate (AgNO3) as a standard titration solution under neutral or weak alkaline c

Ferric ammonium alum indicator can detect silver, chlorine, bromine, iodine and thiocyanate in water under acidic conditions. We have introduced the operating principle of ferric ammonium alum indicator to you before. In order to let you know better about

The ferric ammonium alum indicator method used in water quality testing is also called the Volhard method. It mainly uses NH4SCN or KSCN as the standard titration solution to determine Ag, Cl, Br, I and SCN under acidic conditions. It can be divided into

Gravimetric analysis usually uses some appropriate methods to separate the measured component from the water sample, and then convert it into a certain weighing form, and finally use the weighing method to determine the content of the component. The gravi

Generally BOD5 (five-day biochemical oxygen demand) is commonly used by the dilution method. The original sample or the appropriately diluted sample is selected for determination, and then diluted with an appropriate multiple. So that there is enough diss