Wuebbles Donald J, Patten Kenneth O
Department of Atmospheric Sciences, University of Illinois, Urbana, Illinois 61801, USA
Environ Sci Technol. 2009 May 1;43(9):3208-13. doi: 10.1021/es802308m.
HCFC-123 (C2HCl2F3) is used in large refrigeration systems and as a fire suppression agent blend. Like other hydrochlorofluorocarbons, production and consumption of HCFC-123 is limited under the Montreal Protocol on Substances that Deplete the Ozone Layer. The purpose of this study is to update the understanding of the current and projected impacts of HCFC-123 on stratospheric ozone and on climate and to discuss the potential environmental effects from continued use of this chemical for specific applications. For the first time, the Ozone Depletion Potential (ODP) of a HCFC is determined using a three-dimensional model (MOZART-3) of atmospheric physics and chemistry. All previous studies have relied on results from two-dimensional models. The derived HCFC-123 ODP of 0.0098 is smaller than previous values. Analysis of the projected uses and emissions of HCFC-123, assuming reasonable levels of projected growth and use in centrifugal chiller and fire suppressant applications, suggests an extremely small impact on the environment due to its short atmospheric lifetime, low ODP, low Global Warming Potential (GWP), and the small production and emission of its limited applications. The current contribution of HCFC-123 to stratospheric reactive chlorine is too small to be measurable.
HCFC - 123（C2HCl2F3）用于大型制冷系统，并作为一种灭火制剂混合物。与其他含氢氯氟烃一样，根据《关于消耗臭氧层物质的蒙特利尔议定书》，HCFC - 123的生产和消费受到限制。本研究的目的是更新对HCFC - 123当前及预计对平流层臭氧和气候的影响的认识，并讨论继续将该化学品用于特定应用可能产生的环境影响。首次使用大气物理和化学三维模型（MOZART - 3）确定了一种含氢氯氟烃的臭氧消耗潜能值（ODP）。此前所有研究均依赖二维模型的结果。得出的HCFC - 123的ODP为0.0098，低于先前的值。对HCFC - 123预计用途和排放的分析表明，假设在离心式冷水机组和灭火应用中有合理的预计增长和使用水平，由于其在大气中的寿命较短、ODP较低、全球变暖潜能值（GWP）较低以及其有限应用的生产和排放量较小，其对环境的影响极小。HCFC - 123目前对平流层活性氯的贡献太小，无法测量。
