33 4 2012 4 ENVIRONMENTAL SCIENCE Vol 33 No 4 Apr 2012 1 2 4 2 3 1 4 1 510642 2 510640 3 510640 4 510642 PAHs BC 2007 12 ~ 2009 2 GC-MS PAHs 2 30 ~ 22 2 μg g - 1 b ghi PAHs 4 85 ~ 30 5 μg g - 1 2 PAHs BC 2 PAHs BC PAHs X53 A 0250-3301 2012 04-1204-05 Distribution Characteristics of Polycyclic Aromatic Hydrocarbons and Black Carbon in Road Dusts from Typical Cities of China and India PAN Su-hong 1 2 4 ZHANG Gan 2 SUN Ya-li 3 XIE Qi-lai 1 4 1 College of Natural Resources and Environment South China Agricultural University Guangzhou 510642 China 2 State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China 3 State Key Laboratory of Isotope Geochemistry Guangzhou Institute of Geochemistry Guangzhou 510640 China 4 Key Laboratory of Soil Environment and Waste Reuse in Agriculture of Guangdong High Education Institutions Guangzhou 510642 China Abstract In order to investigate the distribution characteristics of polycyclic aromatic hydrocarbons PAHs and black carbon BC in road dusts in typical cities of Beijing Shanghai Guangzhou and Wuhan in China and Kolcata in India samples were collected in urban roads during Dec 2007 to Feb 2009 The total 16 PAHs concentrations in metro cities from China were 2 30-22 2 μg g - 1 which was dominated by FLA PHE PYR CHR BBF and BGP PAHs contents were in the range of 4 85-30 5 μg g - 1 in Kolcata from India which was dominated by NAP Higher levels of BC in Chinese cities than India city were likely due to different power structures and consumes The correlation between PAHs and BC showed different characteristics in different city which might be reflected diverse sources Diagnostic ratios demonstrated that the main source of PAHs was from the emission of vehicle and coal combustion is another possible source Key words China India road dust polycyclic aromatic hydrocarbons PAHs black carbon BC 3 2 PAHs 2 2 1 2 BC BC 2011-05-28 2011-07-16 40973069 1973 ~ E-mail pansuhong0120@ 163 com
4 1205 4 ~ 8 30 5 μg g - 1 PAHs PAHs 13 PAHs BC 15 12 14 1 1 1 PAHs 2007 12 ~ 2009 2 PAHs PAHs GDP PAHs 10 m 2 16 PAHs 1 2 EPA 16 2 1 2 PAHs PAHsNAP ACE ACEY FLU PHE ANT FLA PYR a BAA CHY b BBF k BKF a BAP 1 2 3-cd INP a h DIB ghi BGP 50% PAHs 5 -d8 -d10 d10 -d10 -d12 GC-MS 64% ± 21% 79% ± 18% 92% ± 11% 113% ± 25% 101% ± 33% 5 2 3 2 NAP 2 3 BC 6 10 mg HCl 4 5 375 24 h Elementar Vario EL Ⅲ 2 2 1 PAHs 2 1 1 PAHs 49 16 PAHs 1 PAHs 2 30 ~ 22 2 μg g - 1 2 85 ~ 22 2 μg g - 1 2006 PAHs 0 82 ~ 10 6 μg g - 1 1 9 PAHs 3 44 ~ 6 85 μg g - 1 2004 FLA PHE PYR CHR BBF BGP PAHs 59% ~ 69% 2 NAP PAHs 1 4 5 2 3 PAHs 3 4 6 88 ~ 32 6 μg g - 1 10 dusts from different cities PAHs 11 PAHs 4 85 ~ 1 Fig 1 PAHs Relative distributions of PAHs in road
1206 33 Table 1 1 PAHs BC 1 Concentrations of PAHs and BC in road dusts around the world N Σ PAH /μg g - 1 BC /mg g - 1 2002 ~ 2003 65 8 11 1 1 ± 0 8 12 2004 6 88 ~ 32 6 10 2005 45 8 13 2005 0 05 ~ 2 61 14 2006 0 82 ~ 10 6 9 2006 45 8 ~ 112 15 2007 10 6 71 2 85 ~ 22 2 19 5 11 8 ~ 27 7 2008 8 5 11 3 44 ~ 6 85 7 09 5 46 ~ 8 60 2007 13 6 23 2 97 ~ 21 8 8 25 6 11 ~ 14 4 2007 8 10 5 6 20 ~ 13 4 12 6 7 39 ~ 23 8 2009 10 11 2 4 85 ~ 30 5 6 41 3 65 ~ 9 22 1 ~ PAHs - 2 3 PAHs BC PAHs PAHs BC 17 18 BC BC PAHs 21 PAHs BC n = 49 P > 0 05 PAHs PAHs BC PAHs BC PAHs n = 13 r 2 = 0 77 P < 0 05 P > 0 19 PAHs PAHs BC BC PAHs 2 2 BC BC BC 1 BC 5 46 ~ 27 7 mg g - 1 22 PAHs 7 BC PAHs - BC BC BC 2 PAHs BC 22 BC BC 1 3 65 ~ 9 22 mg g - 1 PAHs BC BC 11 BC 20
4 1207 PAHs BC 0 28 ~ 1 2 0 3 ~ 0 4 0 6 ~ 1 5 2 4 PAHs 0 17 ~ 0 36 0 46 ~ 0 81 1 30 1 0 ~ 1 2 0 9 ~ 6 6 1 09 BAA /CHR BAP /BGP INP /BGP PAHs PAHs 0 7 0 93 5 10 PAHs 0 44 ~ 0 72 0 82 ~ 1 07 0 83 ~ 1 08 23 PAHs 0 52 ~ 0 64 0 39 ~ 0 66 0 89 ~ 1 15 0 51 ~ 1 08 0 90 ~ 1 09 0 66 ~ 0 99 25 PAHs 0 49 ~ 0 70 0 73 ~ 1 02 0 84 ~ 1 04 PAHs 0 52 ~ 0 75 0 86 ~ 1 47 0 88 ~ 1 08 PAHs LMW 3 PAHs HMW 4 PAHs LMW /HMW > 1 < 1 27 / + ANT /178 27 < 0 1 PAHs > 0 1 2 NAP 3 LMW /HMW > 1 ANT /178 1 PAHs 2 Fig 2 ANE /178 LMW /HMW Plot of ANE /178 ratios against LMW /HMW ratios in road dusts BAA /CHR BAP /BGP INP /BGP 2 27 2 PAHs BAP /BGP Paromita Chakraborty PAHs 28 29 PAHs 1 Guo Z G Lin T Zhang G et al Occurrence and sources of polycyclic aromatic hydrocarbons and n-alkanes in PM2 5 in the Table 2 2 PAHs Diagnostic ratios of PAHs in road dusts FLA PHE PYR CHR BBF BGP PAHs 2 NAP PAHs BC 2 PAHs BC PAHs BC PAHs BC 3 PAHs
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