The description and development course of the poison detector

Chemical detectors appeared during the First World War. The earliest use was a cotton ball and paper sheet impregnated with chemical reagents for the detection of toxicants such as **, ** and mustard gas. With the development of chemical weapons, chemical detectors are increasing. After the appearance of neurotoxic agents, enzymatic chemistry is widely used in various types of chemical detectors. It is based on the inhibition of cholinesterase activity by neurotoxic agents, and changes in the chemical reaction or electrochemical reaction of substrates. Indirect monitoring of phosphorus poisons in air, water and various sample extracts. It is widely used to find poisons on the surfaces of air, ground, equipment, and other objects, find out the types of poisons, determine the approximate concentration of air poisoning agents, and collect poisoned samples.

The structure of the poison detector has a variety of forms, and the more popular FZD04AB type of poison detector is composed of three parts: the detection tube, the suction device and the auxiliary parts. The structure is simple, it can be used with the antivirus package, it is easy to carry, and it can quickly detect the poison in many occasions. Among them, the FZD04A type of poison detector is powered by a dry battery, and can be used to replace the battery more quickly for long-term use. The FZD04B is equipped with a rechargeable battery to improve the economics of use and reduce the long-term cost of the user.

When the poison detector detects the poison, first the poisoned air is passed through the poisoning tube, and the poison is reacted with the reagent on the carrier. Then, the type of the poison is discriminated according to the color of the reaction, and the approximate concentration of the poison is determined according to the depth of the color. A full set of detection equipment (such as the FZD04AB) can detect types of poisons including Sarin (Sorman, Tabun), Avic, Mustard, Lewy, Hydrocyanic, ***, * *, Double **, Phenethyl Chlorophenone, Adam's gas and other toxic gas poisons.

In the 1950s, the Chinese People's Liberation Army began to develop chemical reconnaissance equipment and gradually formed a unique series of equipment. Based on the development of new technologies and components, extensively explore new principles and methods of chemical reconnaissance, such as designing long-range toxicant alarms using **laser technology and **infrared technology, and designing toxicants using high resolution gas chromatography Laboratory equipment, the use of electrochemical principles to design the detectors, etc.; the application of computer technology to chemical reconnaissance; the development of multi-agents capable of alerting and reconnaissance of multiple agents, and automated equipment capable of rapid reconnaissance. With the development of science and technology, the volume and efficiency of the detector will continue to increase.