恶性肿瘤是一类严重危害人类健康的疾病。据有关资料统计,全世界每年有590万人发生恶性肿瘤,430万人死亡;我国每年约有125万人发生肿瘤,约90万人死亡。现代医学认为,致癌因素主要是环境因素,环境因素包括化学致癌、生物致癌和物理致癌三大类。人类在日常生活中常涉及到的化学致癌物主要有:3.4-苯并芘、亚硝胺和黄曲霉毒素等。 Malignant tumors are a class of diseases that seriously endanger human health. According to related statistics, there are 5.9 million people with malignant tumors and 4.3 million people die each year in the world. About 1.25 million people in China suffer from cancer each year, and about 900,000 people die. Modern medicine believes that carcinogenic factors are mainly environmental factors, and environmental factors include chemical carcinogenic, biological carcinogenic and physical carcinogenic. Chemical carcinogens that humans often involve in daily life include: 3.4-benzopyrene, nitrosamines, and aflatoxins.