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在1.7m~3的染毒柜中,采用动态配气法,分别配制了不同浓度的乙醇(270,448和824 ppm)、正庚烷(286,545和758 ppm)、丙酮(104,178和480 ppm)气体以及丙酮+乙醇(103+117,199+192,402+428ppm)、丙酮+正庚烷(117+108,186+141,400+277 ppm)、乙醇+正庚烷(93+94,223+193,451+375 ppm)的混合气体。用气相色谱法分析柜内各种毒物气体的浓度,30 min采样分析一次,取时间加权平均浓度。选择90只健康家兔,♀♂兼用,体重2.6±SD0.3 kg,随机分为18组,分别暴露于上述配制的有害气体中3 h,中
Different concentrations of ethanol (270, 448 and 824 ppm), n-heptane (286, 545 and 758 ppm), acetone (104, 178 and 480 ppm) Acetone + ethanol (103 + 117, 199 + 192, 402 + 428 ppm), acetone + n-heptane (117 + 108,186 + 141,400 + 277 ppm), ethanol + n-heptane (93 + 94,223 + 193,451 + 375 ppm). Gas chromatography analysis of various concentrations of poison gas cabinet, 30 min sampling and analysis, time-weighted average concentration. Totally 90 healthy rabbits were selected and used together with a body weight of 2.6 ± SD0.3 kg. The rabbits were randomly divided into 18 groups and exposed to the above-mentioned harmful gases for 3 h