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研究论文

摘要：对我国西南重庆、贵阳地区大气中的二氧化硫和颗粒物进行采样和分析,并用多元回归法对数据进行了处理和解析。结果表明,该地区大气颗粒物中的硫主要以SO₂^2-状态存在,约为74％。其次是S⁴⁺,约为15％。S^2-、S^?或非水溶性硫酸盐共为11％。其中SO₄^2-以H₂SO₄的含量最高,约为60％。用双曲线1/[SO

Abstract：Sulfur dioxide and particulate samples were collected simultaneously using impregnated-filter method in Chongqing and Guiyang, southwest China. Chemical states of particulate sulfur were determined. The data were analyzed by multiple correlation analysis and the results showed that the particulate sulfur contains 74% of S₆₊, 15% of S₄+ and the remained 11% might be S_2-, S0 or water insoluble sulfate. The high content of H₂SO₄ in SO₄^2- may be an important indicator of air pollution in acid rain effected area. The relation between SO₂ and SO₄^2- can be described by following equation:1/[SO₄^2-] = 1.31/[SO₂] + 0.041,indicating that the SO₄^2- concentration approximates its maximum of 24μg-m-3 as SO₂ increases tp 200 μg-m-3 or up.