Determination of trace water in gases by electrolysis
The determination of trace water in gases is an important research topic and is widely used in chemical industries. Electrolysis is the most widely used method for the determination of trace water in gases. This article briefly introduces the principal and process of determination of trace water in gases by electrolysis.
The electrolysis method for the determination of trace water in gases is also known as Karl Fischer method, which was developed by Karl Fischer. The principle of electrolysis method for the determination of trace water in gases is based on the fact that when electric current is conducted through an electrolyte, some ions are released from the anode, and some ions are released from the cathode. In the case of trace water in gases, when electric current is conducted through the electrolyte, water molecules are released at the anode, and the formed ions are neutralized at the cathode. The amount of released water molecules is proportional to the amount of electric current passed through the electrolyte.
Generally, the determination of trace water in gases by electrolysis is divided into two steps. The first step is to add the sample of the gas that contains trace water into the electrolyte. Usually, the sample gas is passed through a separator to reduce its pressure, then it is added into the electrolyte. The second step is to add an acid or alkali into the electrolyte and to pass electric current through it. The electric current will cause the water molecules in the electrolyte to be released from the anode and be absorbed by the cathode. The concentration of water molecules in the electrolyte can be determined by measuring the amount of electric current that has to be passed through the electrolyte.
The determination of trace water in gases by electrolysis is a simple and convenient method. It is widely used in laboratories for the determination of trace water content in gases, as it is easy to use and provides accurate results. It is also used in various industries, such as petrochemical, gas production, and water treatment.
In summary, the electrolysis method for the determination of trace water in gases is widely used due to its convenience and accurate results. It is important to control the parameters during the process, such as temperature, pressure, electric current, and electrolyte composition. This helps to ensure the accuracy of the determination of trace water in gases.
