一些有毒气体,用常规的实验装置来进行性质或制取实验,会出现操作复杂、实验用品繁多,药品用量大,还伴随着相应的污染和处理问题。注射器是常用的医疗器械,这种废弃的医疗用品却能在这些有毒气体的实验中发挥重要的作用,现举例如下。一、做“氮的循环”中有关物质的性质实验取一支容积约为50 mL的注射器,拔掉活塞,往针管内加入一小片铜片,将活塞重新插入,将针头插入盛有浓硝酸的试剂瓶中,吸入1～2 mL浓硝酸,将针头扎 Some toxic gases, using conventional experimental equipment to conduct experiments or nature, will appear complex operation, a large number of experimental supplies, large quantities of drugs, along with the corresponding pollution and handling problems. Syringes are commonly used medical devices that can play an important role in the experiments of these toxic gases, for example as follows. First, to do “nitrogen cycle ” in the nature of the material experiment Take a syringe with a volume of about 50 mL, unplug the piston, add a small piece of copper to the needle tube, the piston reinserted, the needle inserted Sheng Concentrated nitric acid reagent bottle, inhaled 1 ~ 2 mL of concentrated nitric acid, the needle bar