【摘 要】
：
PM10 airborne particles and soot deposit collected after a fire incident at a chemical store were analyzed in order to determine the concentrations of polycycli
【机 构】
：
Department of Chemistry
论文部分内容阅读
PM10 airborne particles and soot deposit collected after a fire incident at a chemical store were analyzed in order to determine the concentrations of polycyclic aromatic hydrocarbons(PAHs). The samples were extracted with 1:1 hexane-dichloromethane by ultrasonic agitation. The extracts were then subjected to gas chromatography-mass spectrometric(GC-MS) analysis. The total PAHs concentrations in airborne particles and soot deposit were found to be 3.27 ( 1.55 ng/m3 and 12.81 ( 24.37 μg/g, respectively. Based on the molecular distributions of PAHs and the interpretation of their diagnostic ratios such as PHEN/(PHEN + ANTH), FLT/(FLT + PYR) and BeP/(BeP + BaP), PAHs in both airborne particles and soot deposit may be inferred to be from the same source. The difference in the value of IP/(IP + BgP) for these samples indicated that benzo[g,h,i]perylene and coronene tend to be attached to finer particles and reside in the air for longer periods. Comparison between the molecular distributions of PAHs and their diagnostic ratios observed in the current study with those reported for urban atmospheric and roadside soil particles revealed that they are of different sources.
其他文献
The aim of this work was to examine the emission of N2O from soils following addition of nitrogen fertilizer with a nitrification inhibitor(+inh) or without the
A field experiment was conducted to compare the growth and metal accumulation of Vertiveria zizanioides, Paspalum notatum, Cynodon dactylon and Imperata cylindr
The acute and chronic toxic effects of bifenthrin on Daphnia magna were studied. The results showed that 24 h-EC50, 48 h-LC50 and 96 h-LC50 of bifenthrin on D.
目的 通过对深圳市分离的B型流感病毒HA1分子系统进化分析,初步了解深圳市B型流感病毒的流行变异规律.方法 选取深圳市1994-2006共13年间分离的50株B型流感毒株,通过RT-PCR将
Influence of co-firing rate on SO2 emission from co-firing municipal solid waste(MSW) and bituminous containing high amount of sulfur(1.79%) was studied in a 0.
The experiments on pollutant movement in surf zone were conducted on the two gentle beaches(with slope of 1:100 and 1:40, respectively), for diverse wave cases.
Horseradish peroxidase monolayer was assembled on the surface of PET-CO2￣ substrate. The reaction kinetics of HRP/PET film and H2O2 in micro reactor was studied
在CAD图形技术和数据库管理系统的基础上,通过对生态公益林CAD图形和数据的一体化管理,利用GIS软件为操作平台,进行属性数据之间互相关联、整合,实现小班之间或小班和地物之
用3种不同剂量60Co-γ射线辐射处理2个玉米自交系种子,对其诱变后代M1生物学效应及其M3株系主要性状的变异进行了分析.结果表明:①2个玉米自交系M1植株均受到明显的抑制及辐
The Models-3 Community Multi-scale Air Quality (CMAQ) modeling system coupled with the Regional Atmospheric Modeling System (RAMS) is applied to East Asia to in