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	不同生物质燃烧排放多环芳烃及糖醇类化合物的模拟研究; Simulation Study of the Emission of Polycyclic Aromatic Hydrocarbons and Sugar Alcohols from Biomass Burning
	黄帅 ; 黄欣怡 ; 吴水平 ; 胡清华 ; 陈晓秋
	2015-10-15
关键词	PM2.5 生物质燃烧 多环芳烃 糖醇类化合物 光解 PM2.5 biomass burning PAHs sugar alcohols photolysis
英文摘要	选择水稻、小麦、玉米及棉花秸秆与马尾松枝,采集模拟燃烧时排放的PM2.5,分析PM2.5中多环芳烃(PAHS)和糖醇类化合物的含量,获得PM2.5及负载的两类化合物的排放因子;采用500 W汞灯直接照射收集了PM2.5的尘膜,获得了中、高环PAHS及左旋葡聚糖的光解动力学.结果表明,PM2.5的排放因子介于(2.26±0.60)g·kg-1(马尾松枝)~(14.33±5.26)g·kg-1(玉米秸秆)之间;19种PAHS的排放因子介于(0.82±0.21)Mg·kg-1(马尾松枝)~(11.14±5.69)Mg·kg-1(棉花秸秆)之间,且以4环类PAHS所占比例最高,介于51%~71%之间(其中马尾松枝燃烧时惹烯的排放因子最大);9种糖醇类化合物的排放因子范围为(52.34±50.16)Mg·kg-1(水稻秸秆)~(238.81±33.62)Mg·kg-1(小麦秸秆),且都以左旋葡聚糖占绝对优势(72%~96%).光照模拟显示,目标化合物的光照损失都遵循拟一级动力学,其中≥4环的PAHS的光解速率常数随着尘膜中PAHS的负载量增大而减小,来源特征比值fluA/(fluA+Py)和IP/(IP+bg P)相对稳定,而左旋葡聚糖的光解速率常数为0.004 5 MIn-1,与苯并[A]蒽的光解速率常数(0.004 1~0.005 0 MIn-1)接近.; To measure the emission factors of PM2.5and its associated PAHs and sugar alcohols,Chinese red pine stick and four crop straw including rice,wheat,corn and cotton were burned in a chamber.In addition,the kinetics of certain compounds were obtained through the irradiation of the glass filters with PM2.5loading by 500 W mercury lamp.The emission factors of PM2.5were ranged from( 2.26 ± 0.60) g·kg- 1( Chinese red pine stick) to( 14.33 ± 5.26) g·kg- 1( corn straw).Although the emission factors of the total19 PAHs differed from( 0.82 ± 0.21) mg·kg- 1( Chinese red pine stick) to( 11.14 ± 5.69) mg·kg- 1( cotton straw),4 ring PAHs showed predominance over other PAHs accounting for 51%-71% except Chinese red pine in which retene was the predominant compound.The emission factors of 9 sugar alcohols were ranged from( 52.34 ± 50.16) mg·kg- 1( rice straw) to( 238.81 ± 33.62)mg·kg- 1( wheat straw) with levoglucosan accounting for 72%-96% of the total sugar alcohols.Both the selected PAHs and levoglucosan associated with PM2.5followed the first order kinetics.The photolysis kinetic coefficient of PAHs( ring number≥4) was decreased with the increase of PAHs loading in filters.Two PAHs source characteristic ratios such as Flua /( Flua + Py) and IP /( IP +Bg P) were relative stable during the irradiation.The photolysis kinetic coefficient of levoglucosan( 0.004 5 min- 1) was comparable to benzo[a]anthracene( 0.004 1-0.005 0 min- 1).; 国家自然科学基金项目(41171365); 环境保护公益性行业科研专项(201009004); 厦门大学山海基金项目(2013SH011)
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/108417]
专题	环境生态－已发表论文
推荐引用方式 GB/T 7714	黄帅,黄欣怡,吴水平,等. 不同生物质燃烧排放多环芳烃及糖醇类化合物的模拟研究, Simulation Study of the Emission of Polycyclic Aromatic Hydrocarbons and Sugar Alcohols from Biomass Burning[J],2015.
APA	黄帅,黄欣怡,吴水平,胡清华,&陈晓秋.(2015).不同生物质燃烧排放多环芳烃及糖醇类化合物的模拟研究..
MLA	黄帅,et al."不同生物质燃烧排放多环芳烃及糖醇类化合物的模拟研究".(2015).

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