单词	sulfur dioxide
释义	sulfur dioxide noun : a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas Example Sentences Recent Examples on the Web Eruptions can also release toxic gases, such as sulfur dioxide, that can cause health problems, per Forbes. Will Sullivan, Smithsonian Magazine, 12 Aug. 2022 Its surface is thought to be a mix of flowing lava and solidified lava flows with frequent sulfur dioxide snow. Jamie Carter, Forbes, 6 June 2022 Mount Hood, an 11,249-foot active volcano, passes by two giant cavities that exhaust lethal sulfur dioxide and hydrogen sulfide. Outside Online, 29 May 2022 Historically, coal plants emitted a lot of sulfur dioxide, which causes acid rain. Robert Rapier, Forbes, 9 Aug. 2022 The Clean Air Act sets limits for the emission of six hazardous air pollutants: carbon monoxide, ground-level ozone, lead, nitrogen oxides, particulate matter and sulfur dioxide. Joan Meiners, The Arizona Republic, 13 July 2022 Rush Island, near the small Missouri city of Festus, emits an average of about 18,000 tons of sulfur dioxide a year, court filings show. Katherine Blunt, WSJ, 10 June 2022 The US Congress updated and strengthened emission regulations in 1990 and, by 2003, the amount of sulfur dioxide raining down had decreased—by 40 percent in the northeastern US, for instance. Doug Johnson, Ars Technica, 22 July 2022 Natural-gas production is a significant source of methane, carbon dioxide, carbon monoxide, sulfur dioxide, and nitrogen oxide emissions. Wes Siler, Outside Online, 29 Jan. 2021 See More Word History First Known Use 1869, in the meaning defined above Medical Definition sulfur dioxide noun : a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used especially in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant especially in industrial areas
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