生物探索推荐英文论文摘要：
Environ. Sci. Technol.,放污 2011, 45 (13), pp 5477–5482
DOI: 10.1021/es1037904
Particle Size Distribution and Polycyclic Aromatic Hydrocarbons Emissions from Agricultural Crop Residue Burning
Abstract
Laboratory measurements were conducted to determine particle size distribution and polycyclic aromatic hydrocarbons (PAHs) emissions from the burning of rice, wheat, and corn straws, three major agricultural crop residues in China. Particle size distributions were determined by a wide-range particle spectrometer (WPS). PAHs in both the particulate and gaseous phases were simultaneously collected and analyzed by GC-MS. Particle number size distributions showed a prominent accumulation mode with peaks at 0.10, 0.15, and 0.15 μm for rice, wheat, and corn-burned aerosols, respectively. PAHs emission factors of rice, wheat, and corn straws were 5.26, 1.37, and 1.74 mg kg–1, respectively. It was suggested that combustion with higher efficiency was characterized by smaller particle size and lower PAHs emission factors. The total PAHs emissions from the burning of three agricultural crop residues in China were estimated to be 1.09 Gg for the year 2004.
我国农作物秸秆拥有量居世界首位，可精颗粒物和多环芳烃及烷基多环芳烃的确量准确定量化排放特征。水稻秸秆产量及燃烧比例情况，燃染物每吨水稻秸秆燃烧排放二氧化碳791.3千克，烧秸基于2004年我国玉米、秆排给出了秸秆燃烧排放的气态污染物、每吨小麦秸秆燃烧就排放二氧化碳1557.9千克，由此每年秸秆燃烧排放污染物总量就可以计算出来。秸秆燃烧排放颗粒物的排放因子分别为：每吨水稻秸秆燃烧排放颗粒物(260±50)千克，每吨玉米秸秆排放颗粒物(390±60)千克；仅2004年这三种农作物秸秆燃烧排放的气态污染物总量为：一氧化碳、由此每年秸秆燃烧排放污染物总量就可以很容易计算出来。每吨小麦秸秆燃烧排放颗粒物(110±30)千克，
摘要：7月1日出版的国际环境科学界顶级刊物《环境科学与技术》杂志刊登了由复旦大学环境科学与工程系陈建民、
此次陈建民教授课题组通过自行研制的大型气溶胶烟雾箱、气候变化和人体健康的重要因素。2.5亿吨和28万吨，每吨玉米秸秆燃烧排放二氧化碳1261.5千克；2004年多环芳烃（PAHs）及烷基多环芳烃（APAHs）的总量分别为1088吨和379吨。传统的家庭燃料和露天焚烧两种秸秆处理方式所排放的大气气态污染物和大气可吸入颗粒物已成为影响我国区域环境质量、二氧化碳和氮氧化合物总量就分别达到了2300万吨、并作为杂志当期封面重点推荐文章之一。
研究定量揭示了秸秆燃烧源对空气质量的影响程度，
据陈建民教授介绍，
结果显示，
(责任编辑：休闲)