有史以来，特别是大规模的工业化生产以来，人们不断地向自然界投放大量的化学物质，导致动植物和人类赖以生存的生活环境遭到严重破坏，势必造成物种的频危、人类的疾病、生态平衡的破坏等，最终导致大规模的天灾人祸．这就是我们要说的化学定时炸弹问题（简称CTB）．“化学定 Since the beginning of history, especially since large-scale industrial production, people have continuously put a large amount of chemical substances into the natural world, causing serious damage to animals and plants and the living environment on which human beings are living, which will inevitably cause frequent endangerment of species, human diseases, The destruction of ecological balance eventually led to large-scale natural and man-made disasters. This is what we call the chemical time bomb problem (referred to as CTB). "Chemical determination