太原城区大气醛酮化合物的污染特征Pollution Characteristics of Atmospheric Aldehydes and Ketones in the Urban area Taiyuan
王敬,张璐,刘泽乾,路飞,冯艳丽,何秋生,王新明
摘要(Abstract):
通过DNPH衍生剂采样-高效液相色谱法分析,研究了太原市秋冬两季的醛酮污染物的浓度水平,变化规律及来源分析。结果表明:醛酮化合物的浓度变化为秋季(20. 78±6. 34μg·m~(-3))>冬季(17. 08±9. 50μg·m~(-3)),其中甲醛、乙醛和丙酮是大气中含量最丰富的三种物质,在秋冬季共占醛酮化合物总浓度的79. 99%和78. 75%.日变化和C1/C2值分析显示太原市大气醛酮化合物浓度水平与碳氢化合物的光化学反应以及车辆尾气排放有关。除此之外,煤及生物质等燃烧源的影响也不容忽视。
关键词(KeyWords): 醛酮化合物;污染特征;相关性;变化规律
基金项目(Foundation): 国家自然基金(41172316);; 海外及港澳学者合作研究基金项目(41728008);; 山西省研究生创新项目(2019SY498)
作者(Author): 王敬,张璐,刘泽乾,路飞,冯艳丽,何秋生,王新明
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