美国职业安全卫生管理局最近宣布,1,3一丁二烯这种重要的石油化工产品对人可能有致癌的危险,但尚不能最后确定。 鼠类试验结果已明显表现出丁二烯是动物的致癌物。为慎重起见,该局正在考虑一项更“格的标准来修改现行标准。美国现行的允许接触限度为:8小时工作日中,平均每百万 The U.S. Occupational Safety and Health Administration recently announced that 1,3-butadiene, an important petrochemical product, may be carcinogenic to humans but not yet finalized. Murine test results have clearly shown that butadiene is an animal carcinogen. For the sake of caution, the council is considering a more “eligibility criteria to amend the current standards.” The current allowable exposure limits in the United States are: in the eight-hour working day, the average per million