Abstract
AbstractAccording to the Montreal Protocol, the production and consumption of ozone-layer-depleting CCl4 for dispersive applications was globally phased out by 2010, including China. However, continued CCl4 emissions were disclosed, with the latest CCl4 emissions unknown in eastern China. In the current study, based on the atmospheric measurements of ~12,000 air samples taken at two sites in eastern China, the 2021–2022 CCl4 emissions are quantified as 7.6 ± 1.7 gigagrams per year. This finding indicates that CCl4 emissions continued after being phased out for dispersive uses in 2010. Subsequently, our study identifies potential industrial sources (manufacture of general purpose machinery and manufacture of raw chemical materials, and chemical products) of CCl4 emissions.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Reference35 articles.
1. World Meteorological Organization (WMO). Scientific Assessment of Ozone Depletion: 2022, GAW Report No. 278. 509 (World Meteorological Organization (WMO), Geneva, 2022).
2. UNEP. Report of the Sixty-Fifth Meeting of the Executive Committee of the Multilateral Fund for the Implementation of the Montreal Protocol. UN Doc. Report No. UNEP/OzL.Pro/ExCom/65/60/Corr.1, (United Nations Environment Programme, Nairobi, 2012).
3. UNEP. Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer. (UNEP, Washington, DC, 1993).
4. UNEP. Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer. (Ozone Secretariat, 2019).
5. Chipperfield, M. P. et al. Report on Unexpected Emissions of CFC-11. (World Meteorological Organization (WMO), Geneva, Switzerland, 2021).
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