[Experimental studies on the recovery of anesthetic gases].
[Experimental studies on the recovery of anesthetic gases].
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麻醉气体回收的实验研究[J].
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
W. Friesdorf
中科院分区：
文献类型：
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作者：
T. Marx;F. Gross;J. Ermisch;J. Hähnel;L. Weber;W. Friesdorf
挥发性麻醉剂氟烷、恩氟烷和异氟烷是氯氟烃（CFC），会导致臭氧消耗。虽然贡献很小，但其重要性正在上升，因为根据蒙特利尔议定书（1987年）和伦敦会议（1990年），到2000年将逐步淘汰技术用氟氯化碳。替代程序和不含CFC的挥发性药物（如脱氟醚和七氟烷）不会导致臭氧层消耗，但在不久的将来不会取代使用挥发性麻醉剂的标准方法。方法.在实验装置中，我们用活性炭过滤器过滤来自再呼吸循环清除系统的麻醉废气。过滤的物质通过加热室解吸并在冷阱中冷凝。结果用这种方法，可以回收50%-60%的应用气体。气相色谱分析显示氟烷含有微量污染物，异氟烷和安氟烷为纯物质。讨论麻醉废气的回收很容易，不需要复杂的技术设备。物质的纯度可以使回收成为可能，并提供一种避免挥发性麻醉剂污染环境的方法。
The volatile anesthetic agents halothane, enflurane, and isoflurane are chlorofluorocarbons (CFC) and contribute to ozone depletion. Although the contribution is small, its importance is rising, as technical CFCs will be phased out according to the Montreal protocol (1987) and the London conference (1990) by the year 2000. Alternative procedures and CFC-free volatile agents such as des- and sevoflurane do not contribute to depletion of the ozone layer, but will not replace standard methods using volatile anesthetic agents in the near future. METHODS. In an experimental setup, we filtered anesthetic waste gases from scavenging systems of rebreathing circles by activated carbon filters. The filtered substances were desorbed by a heat chamber and condensed in a cold trap. RESULTS. By this method, it was possible to retrieve 50%-60% of the applied gases. Gas chromatographic analysis showed halothane containing traces of pollutants and isoflurane and enflurane as pure substances. DISCUSSION. The retrieval of anesthetic waste gases is easy; no sophisticated technical equipment is necessary. Purity of substances could make recycling possible and offer a method to avoid environmental pollution by volatile anesthetics.