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本文介绍用少量血样(0.02或0.1毫升)测定血液中苯与甲苯的平衡——气相色谱法。本法应用密闭的2毫升皮下注射器,放入少量血样,在恒温水浴中于37℃加热,使注射器内血液和空气中的苯与甲苯浓度达平衡;然后抽取出1毫升空气注入气相色谱分析器。具体方法如下: 标准样品的制备:使用从血库取来的贮存血液制备标准样品。用微量注射器把已知体积的液体溶剂加到盛于容量瓶里的血液中,然后用磁力搅拌器把密闭容量瓶里的血液搅拌30分钟,以得到均匀的、含
This article describes the determination of the balance of benzene and toluene in blood by gas chromatography using a small amount of blood (0.02 or 0.1 ml). The law using a closed 2 ml hypodermic syringe, a small amount of blood samples, heated in a constant temperature water bath at 37 ℃, so that the blood and the syringe of benzene and toluene concentration in the air balance; then extracted 1 ml of air injected into the gas chromatograph . The specific methods are as follows: Preparation of standard samples: The standard samples were prepared using stored blood taken from the blood bank. A known volume of liquid solvent is added to the blood in a volumetric flask using a micro syringe and the contents of the closed volumetric flask are agitated with a magnetic stirrer for 30 minutes to obtain a homogeneous,