As we all know, chromatography is a separation and analysis method, which has a very wide range of applications in analytical chemistry, organic chemistry, biochemistry and other fields.

In chromatographic analysis experiments, acetonitrile and methanol are two common and important chromatographic reagents. They do not cause obvious harm to people like highly toxic reagents, but they will also cause harm to the body of researchers when used over time.

The chemical formula of acetonitrile is C2H3N, which is a volatile, colorless liquid with a special odor similar to ether. Class 3 hazardous chemicals. It is moderately toxic and highly volatile. It is usually absorbed into the human body through the respiratory tract and skin and mucous membranes, causing dizziness, weakness, weakness, and severe respiratory and circulatory system disturbances, difficulty breathing, decreased blood pressure, slowed pulse, and even coma and shock.

The chemical formula of methanol is CH3OH, a colorless, clear, volatile liquid, soluble in water, and moderately toxic. It can enter the body through the respiratory tract, skin, and digestive tract. Repeated exposure to moderate concentrations of methanol in severe cases can lead to blindness and even death.

In addition to acetonitrile and methanol, formic acid, cyclohexane, diphenylmethane, toluene, ethanol, and acetic acid used in chromatographic analysis experiments will damage the health of laboratory workers and cause diseases.

At present, the experimental environment of some laboratories is poor, and the experimenters are directly exposed. Some laboratories use fume hoods, and some laboratories use traditional fume hoods, which cannot guarantee the health of the experimenters. Experimenters are exposed to direct exposure in the laboratory, and the risk of illness will be great; since there is no cabinet, the fume hood only has a certain effect on slow-moving particles such as smoke, but has little effect on toxic gas molecules; traditional Placing the chromatograph in the fume hood is prone to eddy currents, which damage the airflow direction and cause leakage, and consume a large amount of fresh air from the air conditioner, resulting in energy loss.

Chromatographic analysis experiments need to be carried out in ventilation equipment with cabinets, and there are certain requirements for constant temperature and humidity. Especially in the gas chromatography analysis experiment, the liquid is in and out or the gas is in and out, and the flow and volatilization of the organic reagents can easily damage the health of the experimenter.

The ductless clean air fume hood has its own fan to filter and adsorb the air pollutants generated during the experiment, which can reduce the concentration of air pollutants to a safe range, so that the exhaust air can be circulated indoors. The toxic gas generated in the chromatographic analysis experiment is purified from the source, and the fresh air of the air conditioner is not consumed, which greatly reduces the energy consumption, effectively guarantees the health of the experimenters and protects the environment.

In short, the odors volatile from laboratory reagents are harmful to researchers in many aspects. The concentration of volatile reagents in the air may not be large, but in such a working environment for a long time, the accumulation of time will inevitably affect the health of the laboratory staff. cause some damage. In addition, laboratory air quality is not only one of the important factors affecting human health, but also one of the important factors in whether the experiment can be carried out smoothly. Shanghai Hacker's ductless clean air fume hood can adsorb most chemicals used in the laboratory, purify the toxic gas in the cabinet, purify the laboratory air for 24 hours, and make the experimental environment comfortable and secure.