Abstract
Organic carbon (OC) and elemental carbon (EC) were measured in 24 h fine particulate matter (PM2.5) samples collected from May 2015 to April 2016 at urban and rural sites in Nanchong, a rapidly urbanized but low-level industrialized city in the Sichuan Basin, China. The annual average PM2.5, OC, and EC concentrations at urban sites were 45.6–55.7, 8.5–11.5, and 2.8–3.4 μg m−3, respectively, which were similar to the corresponding values (48.3, 10.6, and 3.3 μg m−3) at the rural site. The PM2.5 concentrations displayed strong monthly variations, with the highest (78.8–105.0 μg m−3) in January or February. Likewise, daily OC and EC concentrations exhibited high values in October (only for OC) and December 2015 to February 2016. Correlation, positive matrix factorization, and concentration weighted trajectory analyses were combined to investigate the sources of carbonaceous aerosol. The results indicated that OC and EC were mainly from biomass burning (60.7% and 45.8%) and coal combustion (30.2% and 25.7%), followed by vehicle emissions and road dust. The enhanced emissions from residential coal and biofuel uses in winter and straw combustion in October contributed to higher concentrations of OC and EC during these months. The contributions of biomass burning to OC and EC were significantly higher at the rural site (69.2% and 51.8%) than urban sites (56.3–58.6% and 37.8–41.5%). In addition to local emissions, the high concentrations of OC and EC at Nanchong were also influenced by regional transport in the basin.
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References
Alves CA, Evtyugina M, Vicente AMP, Vicente ED, Nunes TV, Silva PMA, Duarte MAC, Pio CA, Amato F, Querol X (2018) Chemical profiling of PM10 from urban road dust. Sci Total Environ 634:41–51. https://doi.org/10.1016/j.scitotenv.2018.03.338
Arhami M, Shahne MZ, Hosseini V, Haghighat NR, Lai AM, Schauer JJ (2018) Seasonal trends in the composition and sources of PM2.5 and carbonaceous aerosol in Tehran, Iran. Environ Pollut 239:69–81. https://doi.org/10.1016/j.envpol.2018.03.111
Bao MY, Cao F, Chang Y, Zhang YL, Gao Y, Liu X, Zhang Y, Zhang W, Tang T, Xu Z, Liu S, Lee X, Li J, Zhang G (2017) Characteristics and origins of air pollutants and carbonaceous aerosols during wintertime haze episodes at a rural site in the Yangtze River Delta, China. Atmos Pollut Res 8:900–911. https://doi.org/10.1016/j.apr.2017.03.001
Bian QJ, Alharbi B, Shareef MM, Husain T, Pasha MJ, Atwood SA, Kreidenweis SM (2018) Sources of PM2.5 carbonaceous aerosol in Riyadh, Saudi Arabia. Atmos Chem Phys 18:3969–3985. https://doi.org/10.5194/acp-18-3969-2018
Birch ME, Cary RA (1996) Elemental carbon-based method for monitoring occupational exposures to particulate diesel exhaust. Aerosol Sci Technol 25:221–241. https://doi.org/10.1080/02786829608965393
Bisht DS, Dumka UC, Kaskaoutis DG, Pipal AS, Srivastava AK, Soni VK, Attri SD, Sateesh M, Tiwari S (2015) Carbonaceous aerosols and pollutants over Delhi urban environment: temporal evolution, source apportionment and radiative forcing. Sci Total Environ 521:431–445. https://doi.org/10.1016/j.scitotenv.2015.03.083
Bond TC, Doherty SJ, Fahey DW, Forster PM, Berntsen T, DeAngelo BJ, Flanner MG, Ghan S, Kärcher B, Koch D, Kinne S, Kondo Y, Quinn PK, Sarofim MC, Schultz MG, Schulz M, Venkataraman C, Zhang H, Zhang S, Bellouin N, Guttikunda SK, Hopke PK, Jacobson MZ, Kaiser JW, Klimont Z, Lohmann U, Schwarz JP, Shindell D, Storelvmo T, Warren SG, Zender CS (2013) Bounding the role of black carbon in the climate system: a scientific assessment. J Geophys Res-Atmos 118:5380–5552. https://doi.org/10.1002/jgrd.50171
Boreddy SKR, Haque MM, Kawamura K (2018) Long-term (2001-2012) trends of carbonaceous aerosols from a remote island in the western North Pacific: an outflow region of Asian pollutants. Atmos Chem Phys 18:1291–1306. https://doi.org/10.5194/acp-18-1291-2018
Cao GL, Zhang XY, Gong SL, Zheng FC (2008) Investigation on emission factors of particulate matter and gaseous pollutants from crop residue burning. J Environ Sci 20:50–55. https://doi.org/10.1016/s1001-0742(08)60007-8
Cao XY, Zhang XL, Tong DQ, Chen WW, Zhang SC, Zhao HM, Xiu AJ (2018) Review on physicochemical properties of pollutants released from fireworks: environmental and health effects and prevention. Environ Rev 26:133–155. https://doi.org/10.1139/er-2017-0063
Cesari D, Donateo A, Conte M, Merico E, Giangreco A, Giangreco F, Contini D (2016) An inter-comparison of PM2.5 at urban and urban background sites: chemical characterization and source apportionment. Atmos Res 174:106–119. https://doi.org/10.1016/j.atmosres.2016.02.004
Cesari D, de Benedetto GE, Bonasoni P, Busetto M, Dinoi A, Merico E, Chirizzi D, Cristofanelli P, Donateo A, Grasso FM, Marinoni A, Pennetta A, Contini D (2018) Seasonal variability of PM2.5 and PM10 composition and sources in an urban background site in Southern Italy. Sci Total Environ 612:202–213. https://doi.org/10.1016/j.scimenv.2017.08.230
Chang YH, Deng C, Cao F, Cao C, Zou Z, Liu S, Lee X, Li J, Zhang G, Zhang Y (2017) Assessment of carbonaceous aerosols in Shanghai, China—part 1: long-term evolution, seasonal variations, and meteorological effects. Atmos Chem Phys 17:9945–9964. https://doi.org/10.5194/acp-17-9945-2017
Chen Y, S-d X (2014) Characteristics and formation mechanism of a heavy air pollution episode caused by biomass burning in Chengdu, Southwest China. Sci Total Environ 473:507–517. https://doi.org/10.1016/j.scitotenv.2013.12.069
Chen Y, Xie SD, Luo B, Zhai CZ (2014) Characteristics and origins of carbonaceous aerosol in the Sichuan Basin, China. Atmos Environ 94:215–223. https://doi.org/10.1016/j.atmosenv.2014.05.037
Chen D, Cui H, Zhao Y, Yin L, Lu Y, Wang Q (2017) A two-year study of carbonaceous aerosols in ambient PM2.5 at a regional background site for western Yangtze River Delta, China. Atmos Res 183:351–361. https://doi.org/10.1016/j.atmosres.2016.09.004
Diapouli E, Manousakas M, Vratolis S, Vasilatou V, Maggos T, Saraga D, Grigoratos T, Argyropoulos G, Voutsa D, Samara C, Eleftheriadis K (2017) Evolution of air pollution source contributions over one decade, derived by PM10 and PM2.5 source apportionment in two metropolitan urban areas in Greece. Atmos Environ 164:416–430. https://doi.org/10.1016/j.atmosenv.2017.06.016
Duan X, Jiang Y, Wang B, Zhao X, Shen G, Cao S, Huang N, Qian Y, Chen Y, Wang L (2014) Household fuel use for cooking and heating in China: results from the first Chinese Environmental Exposure-Related Human Activity Patterns Survey (CEERHAPS). Appl Energy 136:692–703. https://doi.org/10.1016/j.apenergy.2014.09.066
Fadnavis S, Kalita G, Kumar KR, Gasparini B, Li JLF (2017) Potential impact of carbonaceous aerosol on the upper troposphere and lower stratosphere (UTLS) and precipitation during Asian summer monsoon in a global model simulation. Atmos Chem Phys 17:11637–11654. https://doi.org/10.5194/acp-17-11637-2017
Goncalves C, Figueiredo BR, Alves CA, Cardoso AA, Vicente AM (2017) Size-segregated aerosol chemical composition from an agro-industrial region of Sao Paulo state, Brazil. Air Qual Atmos Health 10:483–496. https://doi.org/10.1007/s11869-016-0441-0
Guo YH (2016) Characteristics of size-segregated carbonaceous aerosols in the Beijing-Tianjin-Hebei region. Environ Sci Pollut Res 23:13918–13930. https://doi.org/10.1007/s11356-016-6538-z
Hallquist M, Wenger JC, Baltensperger U, Rudich Y, Simpson D, Claeys M, Dommen J, Donahue NM, George C, Goldstein AH, Hamilton JF, Herrmann H, Hoffmann T, Iinuma Y, Jang M, Jenkin ME, Jimenez JL, Kiendler-Scharr A, Maenhaut W, McFiggans G, Mentel TF, Monod A, Prévôt ASH, Seinfeld JH, Surratt JD, Szmigielski R, Wildt J (2009) The formation, properties and impact of secondary organic aerosol: current and emerging issues. Atmos Chem Phys 9:5155–5236
Hennigan CJ, Miracolo MA, Engelhart GJ, May AA, Presto AA, Lee T, Sullivan AP, McMeeking GR, Coe H, Wold CE, Hao WM, Gilman JB, Kuster WC, de Gouw J, Schichtel BA, Collett JL Jr, Kreidenweis SM, Robinson AL (2011) Chemical and physical transformations of organic aerosol from the photo-oxidation of open biomass burning emissions in an environmental chamber. Atmos Chem Phys 11:7669–7686. https://doi.org/10.5194/acp-11-7669-2011
Heringa MF, DeCarlo PF, Chirico R, Tritscher T, Dommen J, Weingartner E, Richter R, Wehrle G, Prévôt ASH, Baltensperger U (2011) Investigations of primary and secondary particulate matter of different wood combustion appliances with a high-resolution time-of-flight aerosol mass spectrometer. Atmos Chem Phys 11:5945–5957. https://doi.org/10.5194/acp-11-5945-2011
Huang Y, Liu Y, Zhang L, Peng C, Yang F (2018) Characteristics of carbonaceous aerosol in PM2.5 at Wanzhou in the southwest of China. Atmosphere 9. https://doi.org/10.3390/atmos9020037
Ji D, Zhang J, He J, Wang X, Pang B, Liu Z, Wang L, Wang Y (2016) Characteristics of atmospheric organic and elemental carbon aerosols in urban Beijing, China. Atmos Environ 125:293–306. https://doi.org/10.1016/j.atmosenv.2015.11.020
Ji D, Yan Y, Wang Z, He J, Liu B, Sun Y, Gao M, Li Y, Cao W, Cui Y, Hu B, Xin J, Wang L, Liu Z, Tang G, Wang Y (2018) Two-year continuous measurements of carbonaceous aerosols in urban Beijing, China: temporal variations, characteristics and source analyses. Chemosphere 200:191–200. https://doi.org/10.1016/j.chemosphere.2018.02.067
Jiang Q, Sun YL, Wang Z, Yin Y (2015) Aerosol composition and sources during the Chinese Spring Festival: fireworks, secondary aerosol, and holiday effects. Atmos Chem Phys 15:6023–6034. https://doi.org/10.5194/acp-15-6023-2015
Kang LT, Chen S, Huang J, Zhao S, Ma X, Yuan T, Zhang X, Xie T (2017) The spatial and temporal distributions of absorbing aerosols over East Asia. Remote Sens 9. https://doi.org/10.3390/rs9101050
Liao TT et al (2017) Heavy pollution episodes, transport pathways and potential sources of PM2.5 during the winter of 2013 in Chengdu (China). Sci Total Environ 584:1056–1065. https://doi.org/10.1016/j.scitotenv2017.01.160
Liao TT, Gui K, Jiang W, Wang S, Wang B, Zeng Z, Che H, Wang Y, Sun Y (2018) Air stagnation and its impact on air quality during winter in Sichuan and Chongqing, southwestern China. Sci Total Environ 635:576–585. https://doi.org/10.1016/j.scitotenv.2018.04.122
Lim YB, Tan Y, Perri MJ, Seitzinger SP, Turpin BJ (2010) Aqueous chemistry and its role in secondary organic aerosol (SOA) formation. Atmos Chem Phys 10:10521–10539. https://doi.org/10.5194/acp-10-10521-2010
Lin CC (2016) A review of the impact of fireworks on particulate matter in ambient air. J Air Waste Manage Assoc 66:1171–1182. https://doi.org/10.1080/10962247.2016.1219280
Lin P, Hu M, Deng Z, Slanina J, Han S, Kondo Y, Takegawa N, Miyazaki Y, Zhao Y, Sugimoto N (2009) Seasonal and diurnal variations of organic carbon in PM2.5 in Beijing and the estimation of secondary organic carbon. J Geophys Res-Atmos 114:14. https://doi.org/10.1029/2008jd010902
Lin YC, Tsai CJ, Wu YC, Zhang R, Chi KH, Huang YT, Lin SH, Hsu SC (2015) Characteristics of trace metals in traffic-derived particles in Hsuehshan Tunnel, Taiwan: size distribution, potential source, and fingerprinting metal ratio. Atmos Chem Phys 15:4117–4130. https://doi.org/10.5194/acp-15-4117-2015
Liu D, Li J, Cheng Z, Zhong G, Zhu S, Ding P, Shen C, Tian C, Chen Y, Zhi G, Zhang G (2017) Sources of non-fossil-fuel emissions in carbonaceous aerosols during early winter in Chinese cities. Atmos Chem Phys 17:11491–11502. https://doi.org/10.5194/acp-17-11491-2017
Lu Z, Zhang Q, Streets DG (2011) Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996-2010. Atmos Chem Phys 11:9839–9864. https://doi.org/10.5194/acp-11-9839-2011
Na KS, Sawant AA, Song C, Cocker DR (2004) Primary and secondary carbonaceous species in the atmosphere of Western Riverside County, California. Atmos Environ 38:1345–1355. https://doi.org/10.1016/j.atmosenv.2003.11.023
Ning G, Wang S, Ma M, Ni C, Shang Z, Wang J, Li J (2018) Characteristics of air pollution in different zones of Sichuan Basin, China. Sci Total Environ 612:975–984. https://doi.org/10.1016/j.scitotenv.2017.08.205
Park SS, Son SC (2017) Relationship between carbonaceous components and aerosol light absorption during winter at an urban site of Gwangju, Korea. Atmos Res 185:73–83. https://doi.org/10.1016/j.atmosres.2016.11.005
Pereira GM, Teinilä K, Custódio D, Gomes Santos A, Xian H, Hillamo R, Alves CA, Bittencourt de Andrade J, Olímpio da Rocha G, Kumar P, Balasubramanian R, Andrade MF, de Castro Vasconcellos P (2017) Particulate pollutants in the Brazilian city of Sao Paulo: 1-year investigation for the chemical composition and source apportionment. Atmos Chem Phys 17:11943–11969. https://doi.org/10.5194/acp-17-11943-2017
Perrone MR, Dinoi A, Becagli S, Udisti R (2014) Chemical composition of PM1 and PM2.5 at a suburban site in southern Italy. Int J Environ Anal Chem 94:127–150. https://doi.org/10.1080/03067319.2013.791978
Pio C, Cerqueira M, Harrison RM, Nunes T, Mirante F, Alves C, Oliveira C, Sanchez de la Campa A, Artíñano B, Matos M (2011) OC/EC ratio observations in Europe: re-thinking the approach for apportionment between primary and secondary organic carbon. Atmos Environ 45:6121–6132. https://doi.org/10.1016/j.atmosenv.2011.08.045
Querol X, Alastuey A, Viana M, Moreno T, Reche C, Minguillón MC, Ripoll A, Pandolfi M, Amato F, Karanasiou A, Pérez N, Pey J, Cusack M, Vázquez R, Plana F, Dall'Osto M, de la Rosa J, Sánchez de la Campa A, Fernández-Camacho R, Rodríguez S, Pio C, Alados-Arboledas L, Titos G, Artíñano B, Salvador P, García Dos Santos S, Fernández Patier R (2013) Variability of carbonaceous aerosols in remote, rural, urban and industrial environments in Spain: implications for air quality policy. Atmos Chem Phys 13:6185–6206. https://doi.org/10.5194/acp-13-6185-2013
Rastogi N, Singh A, Sarin MM, Singh D (2016) Temporal variability of primary and secondary aerosols over northern India: impact of biomass burning emissions. Atmos Environ 125:396–403. https://doi.org/10.1016/j.atmosenv.2015.06.010
Schmidl C, Marr IL, Caseiro A, Kotianová P, Berner A, Bauer H, Kasper-Giebl A, Puxbaum H (2008) Chemical characterisation of fine particle emissions from wood stove combustion of common woods growing in mid-European Alpine regions. Atmos Environ 42:126–141. https://doi.org/10.1016/j.atmosenv.2007.09.028
Sui X, Yang LX, Yi H, Yuan Q, Yan C, Dong C, Meng CP, Yao L, Yang F, Wang WX (2015) Influence of seasonal variation and long-range transport of carbonaceous aerosols on haze formation at a seaside background site, China. Aerosol Air Qual Res 15:1251–1260. https://doi.org/10.4209/aaqr.2014.09.0185
Tao J, Gao J, Zhang L, Zhang R, Che H, Zhang Z, Lin Z, Jing J, Cao J, Hsu SC (2014) PM2.5 pollution in a megacity of southwest China: source apportionment and implication. Atmos Chem Phys 14:8679–8699. https://doi.org/10.5194/acp-14-8679-2014
Tian HZ, Lu L, Hao JM, Gao JJ, Cheng K, Liu KY, Qiu PP, Zhu CY (2013) A review of key hazardous trace elements in Chinese coals: abundance, occurrence, behavior during coal combustion and their environmental impacts. Energy Fuel 27:601–614. https://doi.org/10.1021/ef3017305
Turpin BJ, Huntzicker JJ (1991) Secondary formation of organic aerosol in the LOS-ANGELES Basin—a descriptive analysis of organic and elemental carbon concentrations. Atmos Environ Part A 25:207–215. https://doi.org/10.1016/0960-1686(91)90291-e
Turpin BJ, Lim HJ (2001) Species contributions to PM2.5 mass concentrations: revisiting common assumptions for estimating organic mass. Aerosol Sci Technol 35:602–610. https://doi.org/10.1080/02786820152051454
Wang QW, Tan ZM (2014) Multi-scale topographic control of southwest vortex formation in Tibetan Plateau region in an idealized simulation. J Geophys Res-Atmos 119:11543–11561. https://doi.org/10.1002/2014jd021898
Wang B, Liu Y, Shao M, Lu SH, Wang M, Yuan B, Gong ZH, He LY, Zeng LM, Hu M, Zhang YH (2016a) The contributions of biomass burning to primary and secondary organics: a case study in Pearl River Delta (PRD), China. Sci Total Environ 569:548–556. https://doi.org/10.1016/j.scitotenv.2016.06.153
Wang LP, Zhou XH, Ma YJ, Cao ZY, Wu RD, Wang WX (2016b) Carbonaceous aerosols over China—review of observations, emissions, and climate forcing. Environ Sci Pollut Res 23:1671–1680. https://doi.org/10.1007/s11356-015-5398-2
Wang Y, Jia C, Tao J, Zhang L, Liang X, Ma J, Gao H, Huang T, Zhang K (2016c) Chemical characterization and source apportionment of PM2.5 in a semi-arid and petrochemical-industrialized city, Northwest China. Sci Total Environ 573:1031–1040. https://doi.org/10.1016/j.scitotenv.2016.08.179
Wang KP, Qian YF, Lei X, Liu Q, Li J, Chen JJ (2016d) The origin brief analysis of ambient air quality change and air pollution in Nanchong urban area during the twelfth Five-year Sichuan. Environment 35:89–94 (in Chinese with English Abstract)
Wang HB, Shi GM, Tian M, Zhang LM, Chen Y, Yang FM, Cao XY (2017a) Aerosol optical properties and chemical composition apportionment in Sichuan Basin, China. Sci Total Environ 577:245–257. https://doi.org/10.1016/j.scitotenv.2016.10.173
Wang Q, Jiang N, Yin SS, Li X, Yu F, Guo Y, Zhang RQ (2017b) Carbonaceous species in PM2.5 and PM10 in urban area of Zhengzhou in China: seasonal variations and source apportionment. Atmospheric Research 191:1–11. https://doi.org/10.1016/j.atmosres.2017.02.003
Wang H, Tian M, Chen Y, Shi G, Liu Y, Yang F, Zhang L, Deng L, Yu J, Peng C, Cao X (2018) Seasonal characteristics, formation mechanisms and source origins of PM2.5 in two megacities in Sichuan Basin, China. Atmos Chem Phys 18:865–881. https://doi.org/10.5194/acp-18-865-2018
Wu X, Vu TV, Shi Z, Harrison RM, Liu D, Cen K (2018) Characterization and source apportionment of carbonaceous PM2.5 particles in China—a review. Atmos Environ 189:187–212. https://doi.org/10.1016/j.atmosenv.2018.06.025
Yang F, Huang L, Duan F, Zhang W, He K, Ma Y, Brook JR, Tan J, Zhao Q, Cheng Y (2011) Carbonaceous species in PM2.5 at a pair of rural/urban sites in Beijing, 2005-2008. Atmos Chem Phys 11:7893–7903. https://doi.org/10.5194/acp-11-7893-2011
Yang LX, Zhou X, Wang Z, Zhou Y, Cheng S, Xu P, Gao X, Nie W, Wang X, Wang W (2012a) Airborne fine particulate pollution in Jinan, China: concentrations, chemical compositions and influence on visibility impairment. Atmos Environ 55:506–514. https://doi.org/10.1016/j.atmosenv.2012.02.029
Yang YH, Chan CY, Tao J, Lin M, Engling G, Zhang Z, Zhang T, Su L (2012b) Observation of elevated fungal tracers due to biomass burning in the Sichuan Basin at Chengdu City, China. Sci Total Environ 431:68–77. https://doi.org/10.1016/j.scitotenv.2012.05.033
Yu LD, Wang G, Zhang R, Zhang L, Song Y, Wu B, Li X, An K, Chu J (2013) Characterization and source apportionment of PM2.5 in an urban environment in Beijing. Aerosol Air Qual Res 13:574–583. https://doi.org/10.4209/aaqr.2012.07.0192
Zhang Y, Obrist D, Zielinska B, Gertler A (2013) Particulate emissions from different types of biomass burning. Atmos Environ 72:27–35. https://doi.org/10.1016/j.atmosenv.2013.02.026
Zhang L, Huang Y, Liu Y, Yang F, Lan G, Fu C, Wang J (2015) Characteristics of carbonaceous species in PM2.5 in Wanzhou in the hinterland of the Three Gorges Reservoir of Northeast Chongqing, China. Atmosphere 6:534–546. https://doi.org/10.3390/atmos6040534
Zhao S, Yu Y, Yin D, Qin D, He J, Dong L (2018a) Spatial patterns and temporal variations of six criteria air pollutants during 2015 to 2017 in the city clusters of Sichuan Basin, China. Sci Total Environ 624:540–557. https://doi.org/10.1016/j.scitotenv.2017.12.172
Zhao S, Yu Y, Yin D, Qin D, He J, Li J, Dong L (2018b) Two winter PM2.5 pollution types and the causes in the city clusters of Sichuan Basin, Western China. Sci Total Environ 636:1228–1240. https://doi.org/10.1016/j.scitotenv.2018.04.393
Zhong QQ, Wang KP, Chen JJ, Zhang YW, Fu SJ (2015) Evaluation and variation feature analysis of the air quality over Nanchong area in 2014. Plateau Mt Meteorol Res 35:78–83 (in Chinese with English Abstract)
Zhou S, Wang Z, Gao R, Xue L, Yuan C, Wang T, Gao X, Wang X, Nie W, Xu Z, Zhang Q, Wang W (2012) Formation of secondary organic carbon and long-range transport of carbonaceous aerosols at Mount Heng in South China. Atmos Environ 63:203–212. https://doi.org/10.1016/j.atmosenv.2012.09.021
Zhou JB, Xing ZY, Deng JJ, Du K (2016) Characterizing and sourcing ambient PM2.5 over key emission regions in China I: water-soluble ions and carbonaceous fractions. Atmos Environ 135:20–30. https://doi.org/10.1016/j.atmosenv.2016.03.054
Zhou S, Yang L, Gao R, Wang X, Gao X, Nie W, Xu P, Zhang Q, Wang W (2017) A comparison study of carbonaceous aerosols in a typical North China Plain urban atmosphere: seasonal variability, sources and implications to haze formation. Atmos Environ 149:95–103. https://doi.org/10.1016/j.atmosenv.2016.11.009
Zong Z, Wang X, Tian C, Chen Y, Qu L, Ji L, Zhi G, Li J, Zhang G (2016) Source apportionment of PM2.5 at a regional background site in North China using PMF linked with radiocarbon analysis: insight into the contribution of biomass burning. Atmos Chem Phys 16:11249–11265. https://doi.org/10.5194/acp-16-11249-2016
Acknowledgments
This research is funded by the National Key Research and Development Program of China (No. 2018YFC0214001). The authors would like to thank the Nanchong Environmental Monitoring Center for the help in sample collection, Rongrong Wu, Lingyu Li, and Yuanyuan Deng from Peking University for their recommendations for improving this manuscript.
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Yang, W., Xie, S., Zhang, Z. et al. Characteristics and sources of carbonaceous aerosol across urban and rural sites in a rapidly urbanized but low-level industrialized city in the Sichuan Basin, China. Environ Sci Pollut Res 26, 26646–26663 (2019). https://doi.org/10.1007/s11356-019-05242-7
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DOI: https://doi.org/10.1007/s11356-019-05242-7