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sulfur dioxide poisoning

Sulfur dioxide (SO2) is a colorless, highly water-soluble, pungent odor, and it is heavier than air. Widely used in industry, it is a by-product of sulfur ore, paper industry, fossil fuel combustion, and a common pollutant in the atmosphere. Sulfur dioxide can be detected when the concentration is 1.5mg/m3, and when the concentration is 1.8~3.0mg/m3, it can irritate the nasal cavity...

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