Characterisation and source apportionment of atmospheric organic and elemental carbon in an urban–rural fringe area of Taiyuan, China
Ling Mu
A B , Mei Tian A , Lirong Zheng A , Xuemei Li A and Danhua Jing A
+ Author Affiliations
- Author Affiliations
A College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
B Corresponding author. Email: muling@tyut.edu.cn
Environmental Chemistry 16(3) 187-196 https://doi.org/10.1071/EN19002
Submitted: 7 January 2019 Accepted: 1 March 2019 Published: 27 March 2019
Environmental context. Carbonaceous aerosols are major components of atmospheric fine-particulate material. We studied the characteristics and sources of carbonaceous aerosols in the urban–rural fringe area of Taiyuan, China, and found that pollutant levels were generally higher than in similar areas of northern China, and that vehicle emissions were the dominant source. The study highlights the importance of source analysis to help control pollution from particulate matter in the ambient air.
Abstract. The concentrations of organic carbon (OC) and elemental carbon (EC) in fine particulate matter (PM2.5) were measured in 2017 at an urban–rural fringe area of Taiyuan. The annual average concentrations of PM2.5, OC and EC were 143 ± 56, 13 ± 8 and 10 ± 6 μg m−3 respectively, which were higher than those in most northern suburban and rural areas in China. Long-range transport and local resuspended dust caused by strong winds during the spring contributed strongly to PM2.5 mass concentrations. The OC and EC concentrations exhibited strong seasonal variations, with higher values in winter and spring, while poor correlations between OC and EC indicated the complexity of aerosol particle sources in winter and spring. Absolute principal component analysis (APCA) using eight carbon fractions was applied to determine the source contributions of total carbon (TC) in PM2.5. During winter, 61 % of TC was attributed to mixed sources from coal combustion, biomass combustion and secondary organic carbon (SOC) formation, 23 % to vehicle emissions, and 10 % to regional origins. During spring, 57 % of TC was attributed to vehicle exhaust, 18 % to regional transport and SOC formation, and 13 % to biomass burning. Comparative studies of hazy and non-hazy periods revealed the significance of SOC formation during hazy days.
Additional keywords : APCA, carbonaceous aerosol, PM2.5, SOC.
References
Amato F, Karanasiou A, Moreno T, Alastuey A, Orza JAG, Lumbreras J, Borge R, Boldo E, Linares C, Querol X (2012). Emission factors from road dust resuspension in a Mediterranean freeway. Atmospheric Environment 61, 580–587.| Emission factors from road dust resuspension in a Mediterranean freewayCrossref | GoogleScholarGoogle Scholar |
Cao JJ, Lee SC, Ho KF, Zou SC, Fung K, Li Y, Watson JG, Chow JC (2004). Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China. Atmospheric Environment 38, 4447–4456.
| Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, ChinaCrossref | GoogleScholarGoogle Scholar |
Cao JJ, Wu F, Chow JC, Lee SC, Li Y, Chen SW, An ZS, Fung KK, Watson JG, Zhu CS, Liu SX (2005). Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi’an, China. Atmospheric Chemistry and Physics 5, 3127–3137.
| Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi’an, ChinaCrossref | GoogleScholarGoogle Scholar |
Cao JJ, Lee SC, Chow JC, Watson JG, Ho KF, Zhang RJ, Jin ZD, Shen ZX, Chen GC, Kang YM, Zou SC, Zhang LZ, Qi SH, Dai MH, Cheng Y, Hu K (2007). Spatial and seasonal distributions of carbonaceous aerosols over China. Journal of Geophysical Research 112, D22S11
| Spatial and seasonal distributions of carbonaceous aerosols over ChinaCrossref | GoogleScholarGoogle Scholar |
Castro LM, Pio CA, Harrison RM, Smith DJT (1999). Carbonaceous aerosol in urban and rural European atmospheres: estimation of secondary organic carbon concentrations. Atmospheric Environment 33, 2771–2781.
| Carbonaceous aerosol in urban and rural European atmospheres: estimation of secondary organic carbon concentrationsCrossref | GoogleScholarGoogle Scholar |
Chameides WL, Bergin M (2002). Climate change. Soot takes center stage. Science 297, 2214–2215.
| Climate change. Soot takes center stageCrossref | GoogleScholarGoogle Scholar | 12351774PubMed |
Chen H, Li J, Ge B, Yang W, Wang Z, Huang S, Wang Y, Yan P, Li J, Zhu L (2015). Modeling study of source contributions and emergency control effects during a severe haze episode over the Beijing-Tianjin-Hebei area. Science China: Chemistry 58, 1403–1415.
| Modeling study of source contributions and emergency control effects during a severe haze episode over the Beijing-Tianjin-Hebei areaCrossref | GoogleScholarGoogle Scholar |
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. Atmospheric Research 183, 351–361.
| A two-year study of carbonaceous aerosols in ambient PM2.5 at a regional background site for western Yangtze River Delta, ChinaCrossref | GoogleScholarGoogle Scholar |
Chow JC, Watson JG, Pritchett LC, Pierson WR, Frazier CA, Purcell RG (1993). The dri thermal/optical reflectance carbon analysis system: description, evaluation and applications in U.S. Air quality studies. Atmospheric Environment. Part A, General Topics 27, 1185–1201.
| The dri thermal/optical reflectance carbon analysis system: description, evaluation and applications in U.S. Air quality studiesCrossref | GoogleScholarGoogle Scholar |
Chow JC, Watson JG, Kuhns H, Etyemezian V, Lowenthal DH, Crow D, Kohl SD, Engelbrecht JP, Green MC (2004). Source profiles for industrial, mobile, and area sources in the Big Bend Regional Aerosol Visibility and Observational study. Chemosphere 54, 185–208.
| Source profiles for industrial, mobile, and area sources in the Big Bend Regional Aerosol Visibility and Observational studyCrossref | GoogleScholarGoogle Scholar | 14559270PubMed |
Fu S, Cheng HX, Liu YH, Yang ZZ, Xu XB (2009). Spatial character of polychlorinated biphenyls from soil and respirable particulate matter in Taiyuan, China. Chemosphere 74, 1477–1484.
| Spatial character of polychlorinated biphenyls from soil and respirable particulate matter in Taiyuan, ChinaCrossref | GoogleScholarGoogle Scholar | 19111889PubMed |
Fu GQ, Xu WY, Rong RF, Li JB, Zhao CS (2014). The distribution and trends of fog and haze in the North China Plain over the past 30 years. Atmospheric Chemistry and Physics 14, 11949–11958.
| The distribution and trends of fog and haze in the North China Plain over the past 30 yearsCrossref | GoogleScholarGoogle Scholar |
Fung K, Chow JC, Watson JG (2002). Evaluation of OC/EC speciation by thermal manganese dioxide oxidation and the IMPROVE method. Journal of the Air & Waste Management Association 52, 1333–1341.
| Evaluation of OC/EC speciation by thermal manganese dioxide oxidation and the IMPROVE methodCrossref | GoogleScholarGoogle Scholar |
Han YM, Lee SC, Cao JJ, Ho KF, An ZS (2009). Spatial distribution and seasonal variation of char-EC and soot-EC in the atmosphere over China. Atmospheric Environment 43, 6066–6073.
| Spatial distribution and seasonal variation of char-EC and soot-EC in the atmosphere over ChinaCrossref | GoogleScholarGoogle Scholar |
Han YM, Chen LWA, Huang RJ, Chow JC, Watson JG, Ni HY, Liu SX, Fung KK, Shen ZX, Wei C, Wang QY, Tian J, Zhao ZZ, Prevot ASH, Cao JJ (2016). Carbonaceous aerosols in megacity Xi’an, China: Implications of thermal/optical protocols comparison. Atmospheric Environment 132, 58–68.
| Carbonaceous aerosols in megacity Xi’an, China: Implications of thermal/optical protocols comparisonCrossref | GoogleScholarGoogle Scholar |
He Q, Guo W, Zhang G, Yan Y, Chen L (2015). Characteristics and seasonal variations of carbonaceous species in PM2.5 in Taiyuan, China. Atmosphere 6, 850–862.
| Characteristics and seasonal variations of carbonaceous species in PM2.5 in Taiyuan, ChinaCrossref | GoogleScholarGoogle Scholar |
Jacobson MZ (2001). Strong radiative heating due to the mixing state of black carbon in atmospheric aerosols. Nature 409, 695–697.
| Strong radiative heating due to the mixing state of black carbon in atmospheric aerosolsCrossref | GoogleScholarGoogle Scholar | 11217854PubMed |
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. Atmospheric Environment 125, 293–306.
| Characteristics of atmospheric organic and elemental carbon aerosols in urban Beijing, ChinaCrossref | GoogleScholarGoogle Scholar |
Kanakidou M, Seinfeld JH, Pandis SN, Barnes I, Dentener FJ, Facchini MC, Van Dingenen R, Ervens B, Nenes A, Nielsen CJ, Swietlicki E, Putaud JP, Balkanski Y, Fuzzi S, Horth J, Moortgat GK, Winterhalter R, Myhre CEL, Tsigaridis K, Vignati E, Stephanou EG, Wilson J (2005). Organic aerosol and global climate modelling: a review. Atmospheric Chemistry and Physics 5, 1053–1123.
| Organic aerosol and global climate modelling: a reviewCrossref | GoogleScholarGoogle Scholar |
Kim E, Hopke PK (2004). Source apportionment of fine particles in Washington, DC, utilizing temperature-resolved carbon fractions. Journal of the Air & Waste Management Association 54, 773–785.
| Source apportionment of fine particles in Washington, DC, utilizing temperature-resolved carbon fractionsCrossref | GoogleScholarGoogle Scholar |
Kim E, Hopke PK (2005). Improving source apportionment of fine particles in the eastern United States utilizing temperature-resolved carbon fractions. Journal of the Air & Waste Management Association 55, 1456–1463.
| Improving source apportionment of fine particles in the eastern United States utilizing temperature-resolved carbon fractionsCrossref | GoogleScholarGoogle Scholar |
Kim Y, Seo J, Kim JY, Lee JY, Kim H, Kim BM (2018). Characterization of PM2.5 and identification of transported secondary and biomass burning contribution in Seoul, Korea. Environmental Science and Pollution Research International 25, 4330–4343.
| Characterization of PM2.5 and identification of transported secondary and biomass burning contribution in Seoul, KoreaCrossref | GoogleScholarGoogle Scholar | 29181753PubMed |
Krivácsy Z, Hoffer A, Sárvári Z, Temesi D, Baltensperger U, Nyeki S, Weingartner E, Kleefeld S, Jennings SG (2001). Role of organic and black carbon in the chemical composition of atmospheric aerosol at European background sites. Atmospheric Environment 35, 6231–6244.
| Role of organic and black carbon in the chemical composition of atmospheric aerosol at European background sitesCrossref | GoogleScholarGoogle Scholar |
Lai S, Zhao Y, Ding A, Zhang Y, Song T, Zheng J, Ho KF, Lee S-c, Zhong L (2016). Characterization of PM2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern China. Atmospheric Research 167, 208–215.
| Characterization of PM2.5 and the major chemical components during a 1-year campaign in rural Guangzhou, Southern ChinaCrossref | GoogleScholarGoogle Scholar |
Lelieveld J, Evans JS, Fnais M, Giannadaki D, Pozzer A (2015). The contribution of outdoor air pollution sources to premature mortality on a global scale. Nature 525, 367–371.
| The contribution of outdoor air pollution sources to premature mortality on a global scaleCrossref | GoogleScholarGoogle Scholar | 26381985PubMed |
Li B, Zhang J, Zhao Y, Yuan S, Zhao Q, Shen G, Wu H (2015). Seasonal variation of urban carbonaceous aerosols in a typical city Nanjing in Yangtze River Delta, China. Atmospheric Environment 106, 223–231.
| Seasonal variation of urban carbonaceous aerosols in a typical city Nanjing in Yangtze River Delta, ChinaCrossref | GoogleScholarGoogle Scholar |
Li H, Duan F, Ma Y, He K, Zhu L, Ma T, Ye S, Yang S, Huang T, Kimoto T (2018). Case study of spring haze in Beijing: Characteristics, formation processes, secondary transition, and regional transportation. Environmental Pollution 242, 544–554.
| Case study of spring haze in Beijing: Characteristics, formation processes, secondary transition, and regional transportationCrossref | GoogleScholarGoogle Scholar | 30007265PubMed |
Liu L, Huang X, Ding A, Fu C (2016). Dust-induced radiative feedbacks in north China: A dust storm episode modeling study using WRF-Chem. Atmospheric Environment 129, 43–54.
| Dust-induced radiative feedbacks in north China: A dust storm episode modeling study using WRF-ChemCrossref | GoogleScholarGoogle Scholar |
Liu B, Wu J, Zhang J, Wang L, Yang J, Liang D, Dai Q, Bi X, Feng Y, Zhang Y, Zhang Q (2017). Characterization and source apportionment of PM2.5 based on error estimation from EPA PMF 5.0 model at a medium city in China. Environmental Pollution 222, 10–22.
| Characterization and source apportionment of PM2.5 based on error estimation from EPA PMF 5.0 model at a medium city in ChinaCrossref | GoogleScholarGoogle Scholar | 28088626PubMed |
Liu B, Cheng Y, Zhou M, Liang D, Dai Q, Wang L, Jin W, Zhang L, Ren Y, Zhou J, Dai C, Xu J, Wang J, Feng Y, Zhang Y (2018a). Effectiveness evaluation of temporary emission control action in 2016 in winter in Shijiazhuang, China. Atmospheric Chemistry and Physics 18, 7019–7039.
| Effectiveness evaluation of temporary emission control action in 2016 in winter in Shijiazhuang, ChinaCrossref | GoogleScholarGoogle Scholar |
Liu B, Zhang J, Wang L, Liang D, Cheng Y, Wu J, Bi X, Feng Y, Zhang Y, Yang H (2018b). Characteristics and sources of the fine carbonaceous aerosols in Haikou, China. Atmospheric Research 199, 103–112.
| Characteristics and sources of the fine carbonaceous aerosols in Haikou, ChinaCrossref | GoogleScholarGoogle Scholar |
Mancilla Y, Herckes P, Fraser MP, Mendoza A (2015). Secondary organic aerosol contributions to PM2.5 in Monterrey, Mexico: Temporal and seasonal variation. Atmospheric Research 153, 348–359.
| Secondary organic aerosol contributions to PM2.5 in Monterrey, Mexico: Temporal and seasonal variationCrossref | GoogleScholarGoogle Scholar |
Meng ZY, Jiang XM, Yan P, Lin WL, Zhang HD, Wang Y (2007). Characteristics and sources of PM2.5 and carbonaceous species during winter in Taiyuan, China. Atmospheric Environment 41, 6901–6908.
| Characteristics and sources of PM2.5 and carbonaceous species during winter in Taiyuan, ChinaCrossref | GoogleScholarGoogle Scholar |
Mukherjee A, Agrawal M (2018). A global perspective of fine particulate matter pollution and its health effects. In ‘Reviews of environmental contamination and toxicology’. (Eds FA Gunther, P De Voogt) Vol. 244, pp. 5–51. (Springer International Publishing: Cham) 10.1007/398_2017_3
Pu W, Zhao X, Shi X, Ma Z, Zhang X, Yu B (2015). Impact of long-range transport on aerosol properties at a regional background station in Northern China. Atmospheric Research 153, 489–499.
| Impact of long-range transport on aerosol properties at a regional background station in Northern ChinaCrossref | GoogleScholarGoogle Scholar |
Qiao LP, Cai J, Wang HL, Wang WB, Zhou M, Lou SR, Chen RJ, Dai HX, Chen CH, Kan HD (2014). PM2.5 constituents and hospital emergency-room visits in Shanghai, China. Environmental Science & Technology 48, 10406–10414.
| PM2.5 constituents and hospital emergency-room visits in Shanghai, ChinaCrossref | GoogleScholarGoogle Scholar |
Ramírez O, Sánchez de la Campa AM, de la Rosa J (2018). Characteristics and temporal variations of organic and elemental carbon aerosols in a high–altitude, tropical Latin American megacity. Atmospheric Research 210, 110–122.
| Characteristics and temporal variations of organic and elemental carbon aerosols in a high–altitude, tropical Latin American megacityCrossref | GoogleScholarGoogle Scholar |
SPBS (Shanxi Provincial Bureau of Statistics) (2017). Statistical Yearbook of Shanxi. China Statistics Press (in Chinese). Available at http://www.stats-sx.gov.cn/tjsj/tjnj/nj2017/indexeh.htm [verified 13 March 2019]
Tian YZ, Chen G, Wang HT, Huang-Fu YQ, Shi GL, Han B, Feng YC (2016). Source regional contributions to PM2.5 in a megacity in China using an advanced source regional apportionment method. Chemosphere 147, 256–263.
| Source regional contributions to PM2.5 in a megacity in China using an advanced source regional apportionment methodCrossref | GoogleScholarGoogle Scholar | 26766363PubMed |
Tiwari S, Srivastava AK, Bisht DS, Bano T, Singh S, Behura S, Srivastava MK, Chate DM, Padmanabhamurty B (2009). Black carbon and chemical characteristics of PM10 and PM2.5 at an urban site of North India. Journal of Atmospheric Chemistry 62, 193–209.
| Black carbon and chemical characteristics of PM10 and PM2.5 at an urban site of North IndiaCrossref | GoogleScholarGoogle Scholar |
Turpin BJ, Huntzicker JJ (1995). Identification of secondary organic aerosol episodes and quantitation of primary and secondary organic aerosol concentrations during SCAQS. Atmospheric Environment 29, 3527–3544.
| Identification of secondary organic aerosol episodes and quantitation of primary and secondary organic aerosol concentrations during SCAQSCrossref | GoogleScholarGoogle Scholar |
Vodicka P, Schwarz J, Cusack M, Zdimal V (2015). Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winter. The Science of the Total Environment 518–519, 424–433.
| Detailed comparison of OC/EC aerosol at an urban and a rural Czech background site during summer and winterCrossref | GoogleScholarGoogle Scholar | 25770955PubMed |
Wang H, Shi GY, Zhang XY, Gong SL, Tan SC, Chen B, Che HZ, Li T (2015a). Mesoscale modelling study of the interactions between aerosols and PBL meteorology during a haze episode in China Jing–Jin–Ji and its near surrounding region – Part 2: Aerosols’ radiative feedback effects. Atmospheric Chemistry and Physics 15, 3277–3287.
| Mesoscale modelling study of the interactions between aerosols and PBL meteorology during a haze episode in China Jing–Jin–Ji and its near surrounding region – Part 2: Aerosols’ radiative feedback effectsCrossref | GoogleScholarGoogle Scholar |
Wang P, Cao JJ, Shen ZX, Han YM, Lee SC, Huang Y, Zhu CS, Wang QY, Xu HM, Huang RJ (2015b). Spatial and seasonal variations of PM2.5 mass and species during 2010 in Xi’an, China. The Science of the Total Environment 508, 477–487.
| Spatial and seasonal variations of PM2.5 mass and species during 2010 in Xi’an, ChinaCrossref | GoogleScholarGoogle Scholar | 25514763PubMed |
Wang Y, Jia C, Tao J, Zhang L, Liang X, Ma J, Gao H, Huang T, Zhang K (2016). Chemical characterization and source apportionment of PM2.5 in a semi-arid and petrochemical-industrialized city, Northwest China. The Science of the Total Environment 573, 1031–1040.
| Chemical characterization and source apportionment of PM2.5 in a semi-arid and petrochemical-industrialized city, Northwest ChinaCrossref | GoogleScholarGoogle Scholar | 27607906PubMed |
Wang Q, Jiang N, Yin S, Li X, Yu F, Guo Y, Zhang R (2017). Carbonaceous species in PM2.5 and PM10 in urban area of Zhengzhou in China: Seasonal variations and source apportionment. Atmospheric Research 191, 1–11.
| Carbonaceous species in PM2.5 and PM10 in urban area of Zhengzhou in China: Seasonal variations and source apportionmentCrossref | GoogleScholarGoogle Scholar |
Watson JG, Chow JC, Houck JE (2001). PM2.5 chemical source profiles for vehicle exhaust, vegetative burning, geological material, and coal burning in Northwestern Colorado during 1995. Chemosphere 43, 1141–1151.
| PM2.5 chemical source profiles for vehicle exhaust, vegetative burning, geological material, and coal burning in Northwestern Colorado during 1995Crossref | GoogleScholarGoogle Scholar | 11368231PubMed |
Wei W, Li P, Wang H, Song M (2018). Quantifying the effects of air pollution control policies: A case of Shanxi province in China. Atmospheric Pollution Research 9, 429–438.
| Quantifying the effects of air pollution control policies: A case of Shanxi province in ChinaCrossref | GoogleScholarGoogle Scholar |
Xue T, Zhang Q (2018). Associating ambient exposure to fine particles and human fertility rates in China. Environmental Pollution 235, 497–504.
| Associating ambient exposure to fine particles and human fertility rates in ChinaCrossref | GoogleScholarGoogle Scholar | 29324379PubMed |
Yang F, Huang L, Sharma S, Brook JR, Zhang W, Li S-M, Tan J (2011). Two-year observations of fine carbonaceous particles in variable sampling intervals. Atmospheric Environment 45, 2418–2426.
| Two-year observations of fine carbonaceous particles in variable sampling intervalsCrossref | GoogleScholarGoogle Scholar |
Yang X, Zhang WZ, Fan J, Yu JH, Zhao HY (2018). Transfers of embodied PM2.5 emissions from and to the North China region based on a multiregional input-output model. Environmental Pollution 235, 381–393.
| Transfers of embodied PM2.5 emissions from and to the North China region based on a multiregional input-output modelCrossref | GoogleScholarGoogle Scholar | 29306806PubMed |
Zhang R, Tao J, Ho KF, Shen Z, Wang G, Cao J, Liu S, Zhang L, Lee SC (2012). Characterization of atmospheric organic and elemental carbon of PM2.5 in a typical semi-arid area of northeastern China. Aerosol and Air Quality Research 12, 792–802.
| Characterization of atmospheric organic and elemental carbon of PM2.5 in a typical semi-arid area of northeastern ChinaCrossref | GoogleScholarGoogle Scholar |
Zhang F, Wang Z-w, Cheng H-r, Lv X-p, Gong W, Wang X-m, Zhang G (2015). Seasonal variations and chemical characteristics of PM2.5 in Wuhan, central China. The Science of the Total Environment 518–519, 97–105.
| Seasonal variations and chemical characteristics of PM2.5 in Wuhan, central ChinaCrossref | GoogleScholarGoogle Scholar | 25747369PubMed |
Zhang K, Ma Y, Xin J, Liu Z, Ma Y, Gao D, Wu J, Zhang W, Wang Y, Shen P (2018). The aerosol optical properties and PM2.5 components over the world’s largest industrial zone in Tangshan, North China. Atmospheric Research 201, 226–234.
| The aerosol optical properties and PM2.5 components over the world’s largest industrial zone in Tangshan, North ChinaCrossref | GoogleScholarGoogle Scholar |
Zhou J, Zhang R, Cao J, Chow JC, Watson JG (2012). Carbonaceous and ionic components of atmospheric fine particles in Beijing and their impact on atmospheric visibility. Aerosol and Air Quality Research 12, 492–502.
| Carbonaceous and ionic components of atmospheric fine particles in Beijing and their impact on atmospheric visibilityCrossref | GoogleScholarGoogle Scholar |
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. Atmospheric Environment 149, 95–103.
| A comparison study of carbonaceous aerosols in a typical North China Plain urban atmosphere: Seasonal variability, sources and implications to haze formationCrossref | GoogleScholarGoogle Scholar |
Zhu C-S, Cao J-J, Tsai C-J, Shen Z-X, Liu S-X, Huang R-J, Zhang N-n, Wang P (2016). The rural carbonaceous aerosols in coarse, fine, and ultrafine particles during haze pollution in northwestern China. Environmental Science and Pollution Research International 23, 4569–4575.
| The rural carbonaceous aerosols in coarse, fine, and ultrafine particles during haze pollution in northwestern ChinaCrossref | GoogleScholarGoogle Scholar | 26518000PubMed |
Zhuang Y, Li R, Yang H, Chen D, Chen Z, Gao B, He B (2018). Understanding temporal and spatial distribution of crop residue burning in China from 2003 to 2017 Using MODIS Data. Remote Sensing 10,
| Understanding temporal and spatial distribution of crop residue burning in China from 2003 to 2017 Using MODIS DataCrossref | GoogleScholarGoogle Scholar |
