中文关键词钢铁行业PM_2.5PM₁₀源成分谱工艺源 英文关键词iron and steel industryPM_2.5PM₁₀source profileprocess sources

作者	单位	E-mail
温杰	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071	wj9312@hotmail.com
杨佳美	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071
李蒲	武汉市环境监测中心, 武汉 430015
郁佳	武汉市环境监测中心, 武汉 430015
吴建会	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071	envwujh@nankai.edu.cn
田瑛泽	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071
张进生	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071
史国良	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071
冯银厂	南开大学环境科学与工程学院, 国家环境保护城市空气颗粒物污染防治重点实验室, 天津 300071

中文摘要 鉴于我国钢铁行业排放颗粒物源成分谱数量不足，有待更新的现状，致力于服务精细化颗粒物源解析的需求，采用稀释通道系统对武汉市某钢铁公司的3个主要工艺环节（烧结、炼钢、炼铁）排放源进行了采样.构建了3类PM_2.5源成分谱及3类PM₁₀成分谱，对源谱主要化学组分特征进行了研究，并与国内其他区域已有的钢铁行业源谱研究进行了对比.结果表明：①烧结工艺源成分谱中，SO₄^2-、Al和NH₄⁺等含量高，PM_2.5源谱中质量分数依次为22.2%、4.5%和3.5%，PM₁₀源谱中依次为36.0%、5.2%和2.7%，炼铁工艺Fe元素含量最高，在PM_2.5源谱和PM₁₀源谱中分别达到28.3%和24.5%，炼钢工艺源谱Ca、Fe元素等为主要组分；②元素组分中，烧结工艺S元素含量最高，地壳元素在PM₁₀源谱中含量更高，炼铁工艺Pb、Cr等重金属含量偏高，炼钢工艺Cr富集；③源谱之间分歧系数的计算显示，同类工艺粗细粒径源谱相似性偏高，烧结工艺与其他两类工艺源谱之间差异性较高，炼钢工艺与炼铁工艺差异性较低.同国内其他区域研究源谱相比，发现Fe、Si和Ca等为钢铁行业排放颗粒物中标识性组分，而碳组分和SO₄^2-等组分特征随生产方式、除污设备等不同表现出不同特征. 英文摘要 Considering the lack of numbers and updates of particulate matter (PM) source profiles, which show PM emitted from the Chinese iron and steel industry, a dilution tunnel system was used to sample PM discharged from the three main processes (sintering, puddling, and steelmaking) of an iron and steel company in Wuhan, China. Six source profiles for fine and coarse PM were established, and their characteristics were researched. The main conclusions were as follows:① For the sintering source profiles, SO₄^2-, Al, and NH₄⁺ were the dominant components, with mass fractions of 22.2%, 4.5%, and 3.5% in the PM_2.5 profile and 36.0%, 5.2%, and 2.7% in the PM₁₀ profile, respectively. Fe was abundant in puddling source profiles, the mass fractions of which reached 28.3% and 24.5% for PM_2.5 profile and PM₁₀ profile, respectively. As for steelmaking, the main components were Ca and Fe. ② For the element component features, S was enriched in the sintering source profiles. Metal elements, such as Pb and Cr, were more abundant in the puddling source profiles. ③ The coefficients of divergence for profiles were calculated. Profiles of different sizes for the same processes showed similarities, whereas the diversities between the sintering and the other two profiles were higher. 4 Compared with research in other regions, similarities and differences were found and analyzed.

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