首页 | 本学科首页   官方微博 | 高级检索  
     检索      

三种农作物秸秆燃烧颗粒态多环芳烃排放特征
引用本文:王真真,谭吉华,毕新慧,何琴,盛国英,傅家谟.三种农作物秸秆燃烧颗粒态多环芳烃排放特征[J].中国环境科学,2015,35(4):1065-1071.
作者姓名:王真真  谭吉华  毕新慧  何琴  盛国英  傅家谟
摘    要:收集3种农作物秸秆玉米,水稻和小麦露天燃烧排放的颗粒物样品,并利用气相色谱-质谱(GC-MS)对样品中的34种多环芳烃(PAHs)进行分析,研究颗粒态PAHs的排放因子及可用于源解析的诊断参数.结果表明,3种秸秆燃烧总PAHs的排放因子为644.18~1798.13μg/kg;其中4环PAHs在秸秆燃烧样品中含量最高,约占38.8%~58.8%,6环PAHs所占比例相对较小,约占5.72%~15.17%.PAHs中部分单体具有相对较强致癌性,对环境和人体健康的影响不可忽视.首次检测分子量为300的高分子多环芳烃二苯并a,e]荧蒽.在玉米、水稻和小麦秸秆燃烧排放颗粒物中的排放因子分别为6.70,2.77和2.92μg/kg.此外,研究发现Ba P/Bghi P,Phe/Phe+Ant和Flu/(Flu+Pyr)比值可以作为较好的区分秸秆燃烧与其他来源的诊断参数.

关 键 词:秸秆燃烧  颗粒物  多环芳烃  排放因子  诊断参数  

Emission characteristics of polycyclic aromatic hydrocarbons from three types of agricultural straw burning smoke
WANG Zhen-Zhen,TAN Ji-Hua,BI Xin-Hui,HE Qin,SHENG Guo-Ying,FU Jia-Mo.Emission characteristics of polycyclic aromatic hydrocarbons from three types of agricultural straw burning smoke[J].China Environmental Science,2015,35(4):1065-1071.
Authors:WANG Zhen-Zhen  TAN Ji-Hua  BI Xin-Hui  HE Qin  SHENG Guo-Ying  FU Jia-Mo
Abstract:Three straw burning smokes in lab simulating straw open burning mode were collected by using a sampler of high-flow capacity. 34particulate polycyclic aromatic hydrocarbons (PAHs) were analyzed by GC-MS to investigate their emission factors and diagnostic ratios. The emission factors of PAHs from three straw burning smoke ranged from about 644.18~1798.13μg/kg. Four-rings PAHs are the most abundant PAH species in all samples, and their proportion to total PAHs ranged from 38.8% to 58.8%. The contributions of six-rings PAHs in TSP samples ranged from 5.72% to 15.17%. Although the contributions of six-rings PAHs were low in total PAHs, their impacts on human health and environment were critical for its high carcinogenicity. High-rings PAH Dibenzo a,e] fluoranthene was firstly determined from straw burning smokes, its emission factor from corn, rice and wheat straw burning smoke was measured at about 6.70, 2.77 and 2.92μg/kg, respectively. Some diagnostic ratios such as Benzo(a)pyrene to Benzoghi]perylene (BaP/BghiP), phenanthrene to phenanthrene plus anthracene (Phe/(Phe+Ant)) and fluoranthene to fluoranthene plus pyrene (Flu/(Flu+ Pyr)) were also identified in this study.
Keywords:straw burning  total suspended particle  polycyclic aromatic hydrocarbons  emission factors  diagnostics ratios  
本文献已被 CNKI 等数据库收录!
点击此处可从《中国环境科学》浏览原始摘要信息
点击此处可从《中国环境科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号