中国科技论文在线
中國科技論文在線
중국과기논문재선
SCIENCEPAPER ONLINE
2011年
9期
661-664
,共4页
气溶胶%灰霾%化学特性%研究进展
氣溶膠%灰霾%化學特性%研究進展
기용효%회매%화학특성%연구진전
aerosol%haze%chemical properties%research progress
灰霾现象在我国日趋严重,已成为一种新型灾害性天气。针对灰霾期间大气颗粒物中无机物、有机物的污染特征以及粒径分布特征进行综合分析,结果发现,灰霾期间PM2.5、有机碳和元素碳浓度明显增高;多环芳烃主要集中于细模态中,存在昼夜和季节差异;无机元素的质量浓度要高于非灰霾期,并且其污染水平存在季节差异;水溶性离子比非灰霾天气时浓度高,秋冬季污染高于春夏季。在今后研究中,应加强研发精密的观测设备,深入研究其物理化学特性;分析灰霾的主要污染源、形成条件及形成机制,从而探索预测和防控灰霾发生。
灰霾現象在我國日趨嚴重,已成為一種新型災害性天氣。針對灰霾期間大氣顆粒物中無機物、有機物的汙染特徵以及粒徑分佈特徵進行綜閤分析,結果髮現,灰霾期間PM2.5、有機碳和元素碳濃度明顯增高;多環芳烴主要集中于細模態中,存在晝夜和季節差異;無機元素的質量濃度要高于非灰霾期,併且其汙染水平存在季節差異;水溶性離子比非灰霾天氣時濃度高,鞦鼕季汙染高于春夏季。在今後研究中,應加彊研髮精密的觀測設備,深入研究其物理化學特性;分析灰霾的主要汙染源、形成條件及形成機製,從而探索預測和防控灰霾髮生。
회매현상재아국일추엄중,이성위일충신형재해성천기。침대회매기간대기과립물중무궤물、유궤물적오염특정이급립경분포특정진행종합분석,결과발현,회매기간PM2.5、유궤탄화원소탄농도명현증고;다배방경주요집중우세모태중,존재주야화계절차이;무궤원소적질량농도요고우비회매기,병차기오염수평존재계절차이;수용성리자비비회매천기시농도고,추동계오염고우춘하계。재금후연구중,응가강연발정밀적관측설비,심입연구기물이화학특성;분석회매적주요오염원、형성조건급형성궤제,종이탐색예측화방공회매발생。
Haze,a new type of disastrous weather,has become a more and more serious problem.The properties of the organic and inorganic compounds and size distribution of aerosols were analyzed during haze episodes.The results indicated that the concentrations of PM2.5,organic carbon and element carbon are obviously increased,the size distribution of polycyclic aromatic hydrocarbons(PAHs) centres mainly at the fine mode with differences between day and night as well as different seasons,the concentration of inorganic element is higher than that of non-hazy days.The concentration of water soluble ions during hazy days is much more higher than the non-hazy days.In the next study,the new observation equipments need to be developed to study the physics and chemistry properties of aerosols.The sources and mechanism of haze would be analyzed to explore effective ways to predict and prevent haze.