聚氯乙烯为生产与使用得最广泛的合成塑料,以往曾对其毒性及生产过程中的危害进行调查研究,一般认为对人的健康威胁不大。但最近国外期刊连续报导了氯乙烯对实验动物及生产工人致肿瘤的事例,值得引起注意与警惕。1971年意大利学者报导,将大鼠暴露 Polyvinyl chloride is the most widely used synthetic plastic produced and used. In the past, polyvinyl chloride was investigated for its toxicity and hazards in the production process. It is generally believed that it is not a threat to human health. Recently, however, foreign journals have continuously reported cases of carcinogenesis caused by vinyl chloride on experimental animals and production workers, which deserves our attention and vigilance. Italian scholars in 1971 reported that the rats were exposed