Abstract Gas pollutants from students’ chemical experiment in middle school were measured and the indoor air pollutants data were collected in chemical laboratory under different ventilation conditions. The results showed that the main gas pollutants produced by the students’ group chemical experiments in middle school were benzene, toluene, formaldehyde, ammonia, etc. The concentration of gas pollutants in laboratory rose sharply in a short time without any ventilation measures in experiment procedure. As a result, it was necessary to take effective measures to remove air pollutants inside the laboratory. At present, the ventilation equipment provided in the middle school chemical laboratory is mainly desktop ventilation equipment. Comparing with the natural ventilation environment, turning on the desktop ventilation equipment during students’ experiments can effectively reduce the concentration of gas pollutants produced by the experiment.
LIU Shao-Xuan, PENG Shi. Research on Gas Environment in Chemical Laboratory of High School[J]. Chinese Journal of Chemical Education, 2020, 41(7): 72-75.
