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1977年4月至5月我们和公卫教研组,对我省东方红化工机械厂三硝基甲苯作业人员的中毒性晶状体改变情况作了调查。我们所检查的对象系直接接触三硝基甲苯的作业人员,他们的工龄均在2年至20年间。其作业现场空气中三硝基甲苯浓度据14点的测定有8个点超过了国家规定标准的1.74—151倍。
From April to May 1977, we and the Public Health and Education Research Unit investigated the change of toxic lens of trinitrotoluene workers in Dongfanghong Chemical Machinery Factory of our province. The subjects we examined were those directly exposed to trinitrotoluene, both of whom worked for two to 20 years. The trinitrotoluene concentration in the air at work site was 1.74-151 times that of the national standard at 8 points according to the 14-point determination.