常量乙炔实验室制备中，由于电石中含有硫化钙、磷化钙及砷化钙杂质，与水作用放出的硫化氢、磷化氢、砷化氢气体，使制得的乙炔气体具有强烈的恶臭，严重地污染了实验室环境，在不同程度上危害着师生的身心健康。若采用下列微型实验装置，大大减少了对环境的污染。乙炔微型系 Acetylene in constant laboratory preparation, the calcium carbide contains calcium sulfide, calcium phosphide and calcium arsenide impurities, with the release of hydrogen sulfide, phosphine, hydrogen arsine gas, the resulting acetylene gas has a strong odor , Seriously contaminated the laboratory environment, to varying degrees, endanger the physical and mental health of teachers and students. If using the following micro-experimental device, greatly reducing the pollution of the environment. Acetylene micro-system