稻草和玉米秸秆燃烧烟尘中正构烯烃的组成

被引：3

作者：

刘刚

李久海

徐慧

吴丹

机构：

[1] 南京信息工程大学环境科学与工程学院

来源：

中国环境科学 | 2013年 / 12期

关键词：

稻草; 玉米秸秆; 烟尘; 正构烯烃;

D O I：

暂无

中图分类号：

X513 [粒状污染物];

学科分类号：

0706 ; 070602 ;

摘要：

在明火燃烧和闷烧条件下对6种稻草和5种玉米秸秆进行了燃烧试验,并对烟尘中的正构烯烃进行了分析.结果表明,在稻草明火烟尘中,正构烯烃由C15C29组成,其平均总含量为918.7mg/kg,低碳数与高碳数正构烯烃含量比（L/H）的平均值为0.6,碳优势指数（CPI）的平均值为1.2.正构烯烃呈双峰式分布,两个峰碳数主要是C24和C28.在稻草闷烧烟尘中,正构烯烃由C17C29组成,其总含量、L/H、CPI等的平均值分别是517.0mg/kg、0.7和0.9.正构烯烃同样呈双峰型分布,两个峰碳数主要是C23和C28.在玉米秸秆的明火烟尘中,正构烯烃由C19C29组成.其总含量、L/H、CPI等的平均值分别为126.0mg/kg、0.7和1.3.正构烯烃呈单峰型分布,主峰碳数主要是C24和C23.在玉米秸秆的闷烧烟尘中,正构烯烃由C17C29组成,其总含量、L/H、CPI等的平均值分别是198.9mg/kg、1.8和0.9.正构烯烃呈双峰式分布,其主峰碳数均为C23,次峰碳数主要是C29.在两类秸秆燃烧产生的烟尘之间,正构烯烃的组成存在明显差别.这有助于识别气溶胶中稻草或玉米秆燃烧来源的此类污染物.

引用

页码：2140 / 2147

页数：8

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