利用烟雾箱反应装置,开展了OH自由基启动的异戊二烯光氧化生成二次有机气溶胶(SOA)反应的研究.用质子转移质谱仪(PTR-MS)监测反应物异戊二烯浓度、气相产物异丁烯醛和甲基乙烯酮(m/z=70)浓度随反应时间的变化；用扫描电迁移率粒径谱仪(SMPS)监测二次有机气溶胶产生和生长过程；用同步辐射光电离质谱仪(SRPIMS)检测不同反应时刻的光氧化气相产物的质谱.实验数据显示随着反应时间的增长,异戊二烯浓度逐渐减少,主要气相产物的浓度逐渐增加,SOA逐渐产生和增长；当异戊二烯快要消耗完时,SOA仍然继续增长.它表明由于有机气溶胶粒子的产生,主要的气相产物表面上发生的后续反应或者非均相反应产物对SOA的生长具有促进作用.
参考文献
| [1] | Seinfeld J H,Pandis S N.Atmospheric Chemistry and Physics:From Air Pollution to Climate Change[M].2nd edition,New York:John Wiley & Sons,2006. |
| [2] | Hallquist M,Wenger J C,Baltensperger U,et al.The formation,properties and impact of secondary organic aerosol:Current and emerging issures[J].Atmos.Chem.Phys.,2009,9(14):5155-5236. |
| [3] | Guenther A,Hewitt C N,Erickson D,et al.A global model of natural volatile organic compound emissions[J].J.Geophys.Res.,1995,100(D5):8873-8892. |
| [4] | Biesenthal T A,Wu Q,Shepson P B,et al.A study of relationships between isoprene,its oxidation products,and ozone,in the Lower Fraster Valley,BC[J].Atmos.Environ.,1997,98:2049-2058. |
| [5] | Claeys M,Graham B,et al.Formation of secondary organic aerosols through photooxidation of isoprene[J].Science,2004,303:1173-1176. |
| [6] | Surratt J D,Murphy S M,Kroll J H,et al.Chemical composition of secondary organic aerosol formed from the photooxidation of isoprene[J].J.Phys.Chem.,2006,110:9665-9674. |
| [7] | Ng N L,Kroll J H,Keywood M D,et al.Contribution of first-versus second-generation products to secondary organic aerosols formed in the oxidation of biogenic hydrocarbons[J].Environ.Sci.Technol.,2006,40:2283-2297. |
| [8] | Kroll J H,Ng N L,Murphy S M,et al.Secondary organic aerosol formation from isoprene photooxidation[J].Environ.Sci.Technol.,2006,40:1869-1877. |
| [9] | Pan G,Hu C J,Wang Z Y,et al.Direct detection of isoprene photooxidation products by using synchrotron radiation photoionization mass spectrometry[J].Rapid Commun.Mass Spectrom.,2012,26(2):189-194. |
| [10] | Liu X Y,Zhang W J,Huang M Q,et al.Effect of illumination intensity and light application time on secondary organic aerosol formation from the photooxidation of α-pinene[J].J.Environ.Sci-China.,2009,21(4):447-451. |
| [11] | Hao L Q,Wang Z Y,Huang M Q,et al.Size distribution of the secondary organic aerosol particles from the photooxidation of toluene[J].J.Environ.Sci.,2005,17(6):912-916. |
| [12] | Li Jianquan,Shen Chengyin,Wang Hongmei,et al.Development and validation of proton transfer reaction mass spectrometry[J].Chinese Journal of Analytical Chemistry(分析化学),2008,36:132-136 (in Chinese). |
| [13] | Paulot F,Crounse J D,Kjaergaard H G,et al.Isoprene photooxidation:New insights into the production of acids and organic nitrates[J].Atmos.Chem.Phys.,2009,9:1479-1501. |
| [14] | Nguyen T B,Roach P J,Laskin J,et al.Effect of humidity on the composition of isoprene photooxidation secondary organic aerosol[J].Atmos.Chem.Phys.,2011,708(11):6931-6944. |
| [15] | Annmarie G C,Barbara J T,Ho-Jin L,et al.Link between isoprene and secondary organic aerosol (SOA):Pyruvic acid oxidation yields low volatility organic acids in clouds[J].Geophys.Res.Lett.,2006,33:8272-8276. |
| [16] | Healy R M,Wenger J C,Metzger A,et al.Gas/particle partitioning of carbonyls in the photooxidation of isoprene and 1,3,5-trimethylbenzene[J].Atmos.Chem.Phys.,2008,8:3215-3230. |
| [17] | Jenkin M E,Boyd A A,Lesclaux R.Peroxy radical kinetics resulting from the OH-initiated oxidation of 1,3-butadiene,2,3-dimethyl-1,3-butadiene and isoprene[J].J.Atmos.Chem.,1998,29:267-298. |
| [18] | Perria M J,Seitzinger S,Turpin B J.Secondary organic aerosol production from aqueous photooxidation of glycolaldehyde:Laboratory experiments[J].Atmos.Environ.,2009,43:1487-1497. |
| [19] | Tuazon E C,Atkinson R.A product study of the gas phase reaction of isoprene with the OH radical in the presence of NOx[J].Int.J.Chem.Kinet.,1990,22:1221-1236. |
| [20] | Carlton A G,Wiedinmyer C,et al.A review of secondary organic aerosol (SOA) formation from isoprene[J].Atmos.Chem.Phys.,2009,9:4987-5005. |
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