近年来,不少地方用氧气袋装运鱼苗,发现死苗现象,其原因主要是氧气袋有毒。一般氧气袋是用两类塑料薄膜制成的,一类是用聚乙烯、聚丙烯和密胺等原料制成的,一类是用聚氯乙烯制成的。前者无毒,后者有毒,不能装运鱼苗。氧气袋有无毒性可用下列简便方法进行鉴别:无毒氧气袋埋入水中底层后,可浮出水面,而有毒氧气袋是不向上浮的;用手指触摸塑料袋,有润滑感者无毒,有发粘感者有毒;抓住氧气袋的一角,用力抖一 In recent years, many places use oxygen bags to transport fish fry and find the phenomenon of dead seedlings, the main reason is toxic oxygen bags. General oxygen bags are made of two types of plastic film, one is made of polyethylene, polypropylene and melamine raw materials, one is made of polyvinyl chloride. The former is non-toxic, the latter is poisonous and can not be shipped fry. Non-toxic oxygen bags can be identified by the following simple method: Non-toxic oxygen bags buried in the bottom of the water, can surface, and toxic oxygen bags are not floating upward; touch with a finger plastic bags, A sticky sensation toxic; grasp the corner of the oxygen bag, a hard shake one