DOI: 10.3724/SP.J.1096.2013.30545

Chinese Journal of Analytical Chemistry (分析化学) 2013/41:12 PP.1831-1836

Analysis of Diesel Exhaust Particles Using Single Particle Aerosol Mass Spectrometry

Single particle mass spectrometer (SPAMS) can be used to determine the size and chemical compositions of single particles rapidly in real-time, while no need for sample pretreatment and avoiding the change of the sample components. In this study, homemade SPAMS was used to study the signatures of diesel exhaust particles. The fresh emitted particles were analyzed firstly. The fresh particles collected in the suction flask were then reanalyzed after 15-hour aging. Results showed that fresh emitted particles were mainly composed by elemental carbon (EC), organic carbon (OC), calcium phosphate (Ca-Phosphate), sodium and potassium mixing with elemental carbon (NaK-EC), potassium mixing with secondary (K-Secondary) and polycyclic aromatic hydrocarbons (PAH), with diameters concentrating in less than 300 nm. Aged particles had a broader size distribution than that of fresh particles and were composed by EC and OC mixing with secondary species (OCEC-Secondary), EC containing only positive mass spectra, K-Secondary, OC, NaK-EC, metal containing (Metal) particles. Aged particles mix with secondary species including organics, nitrate, sulfate, ammonium in the atmosphere. This study has reference sense for domestic engine manufacture, oil processing, catalyst performance study and environmental particles apportionment.

Key words:Mass spectrometry,Diesel exhaust,Single particle,Size and composition

ReleaseDate:2015-04-19 11:07:57

1 Jacobson M Z. Geophys. Res. Lett., 2000, 27(2): 217-220

石贤峰, 姚惠英, 刘 波, 孙民德, 徐华伟, 宓 詠, 沈 皓. 复旦学报(自然科学版), 2001, 40(4): 442-445

王连平, 朱朝晖, 张 蕊, 郁宏刚. 同济大学学报(医学版), 2002, 23(3): 243-245

2 Ramanathan V,Carmichael G. Nature Geosci, 2008, 1(4): 221-227

夏柱红, 孔祥和, 方 黎, 郑海洋, 张为俊. 环境污染治理技术与设备, 2002, 3(3): 32-36

3 Wang R, Tao S, Wang W, Liu J, Shen H, Shen G, Wang B, Liu X, Li W, Huang Y, Zhang Y, Lu Y, Chen H, Chen Y, Wang C, Zhu D, Wang X, Li B, Liu W, Ma J. Environ. Sci. Technol., 2012, 46(14): 7595-7603

4 Iwai K, Higuchi K, Udagawa T, Ohtomo K, Kawabata Y. Exp. Toxicol. Pathol., 1997, 49(5): 393-401

杜金山, 佟 玲, 尹桂丽. 天津化工, 2005, 19(3): 39-41

5 SHI Xian-Feng, YAO Hui-Ying, LIU Bo, SUN Min-De, XU Hua-Wei, MI Yong, SHEN Hao. Journal of Fudan University(Natural Science), 2001, 40(4): 442-445

6 WANG Lian-Ping, ZHU Zhao-Hui, ZHANG Rui, YU Hong-Gang. Journal of Tong Ji University (Medical Science), 2002, 23(3): 243-245

7 Prather K A, Hatch C D, Grassian V. H. Annual Review of Analytical Chemistry, 2008, 1: 485-514

8 XIA Zhu-Hong, KONG Xiang-He, FANG Li, ZHENG Hai-Yang, ZHANG Wei-Jun. Techniques and Equipment for Environmental Pollution Control, 2002, 3(3): 32-36

9 Li L, Huang Z X, Dong J, Li M, Gao W, Nian H Q, Fu Z, Zhang G, Bi X H, Cheng P, Zhou Z. Int. J. Mass Spectrom., 2011, 303(2-3): 118-124

10 Kim W S, Park Y H, Shin J Y, Lee D W, Lee S. Anal. Chem., 1999, 71(15): 3265-3272

11 Moffet R C, Prather K A. Proc. Natl. Acad. Sci. U. S. A., 2009, 106(29): 11872-11877

12 Song X H, Hopke P K, Fergenson D P, Prather K A. Anal. Chem., 1999, 71(4): 860-865

13 Shields L G, Suess D T, Prather K A. Atmos. Environ., 2007, 41(18): 3841-3852

14 Healy R M, Sciare J, Poulain L, Kamili K, Merkel M, Müller T, Wiedensohler A, Eckhardt S, Stohl A, Sarda-Estéve R, McGillicuddy E, O'Connor I P, Sodeau J R, Wenger J C. Atmos. Chem. Phys. Discuss., 2011, 11(11): 30333-30380

15 DU Jin-Shan, TONG Ling, YIN Gui-Li. Tianjin Chemical Industry, 2005, 19(3): 39-41

16 Gross D S, Galli M E, Silva P J, Prather K A. Anal. Chem., 2000, 72(2): 416-422