2,4-二氯苯氧乙酸(2,4-dichlorophenoxyacetic acid,2,4-D)是一种对人类具有潜在毒性的苯氧羧酸类除草剂,能杀死多种阔叶杂草,在欧洲和北美的地下水中经常发现其残留[1],在我国因其成本较低也得到了较为广泛的应用。但其残留与毒性日益受到了人们的重视,本文就2,4-D在毒理学和流行病学方面已取得的研究成果进行综述。1理化性质2,4-D纯品为白色菱形结晶,略带有酚的气味,不 2,4-Dichlorophenoxyacetic acid (2,4-D) is a phenoxycarboxylic acid herbicide that is potentially toxic to humans. It can kill many broadleaf weeds, It is often found in groundwater in Europe and North America [1] and has been widely used in our country due to its low cost. However, its residuals and toxicity are increasingly valued by people. This paper reviews the achievements of 2,4-D in toxicology and epidemiology. 1 Physical and Chemical Properties 2,4-D pure white diamond crystals, slightly with the smell of phenol, no