The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.
以异丙醇为溶剂,壬醇为,用气相色谱-质谱法分析卷烟烟气总粒相物中的酸,酸测定结果的相对准偏差小于1%,平均回收率为99。
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This fan sucks any and all liquids away, whisking just next door where, alongside moisture condensated from the air, their wee is broken down by electrolysis to generate fresh oxygen, and make the next batch of drinking water.
这台风扇能吸走所有液体,并把它们送到隔壁,在那里,它们和空气中凝的水分一起被电解分解,产生新鲜氧气,并制造出下一批饮用水。