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DOI	10.5572/ajae.2021.101
	Characteristics of Atmospheric Particle-bound Polycyclic Aromatic Compounds over the Himalayan Middle Hills: Implications for Sources and Health Risk Assessment
	Maharjan, Linda; Tripathee, Lekhendra; Kang, Shichang; Ambade, Balram; Chen, Pengfei; Zheng, Huijun; Li, Quanlian; Shrestha, Kundan Lal; Sharma, Chhatra Mani
通讯作者	Tripathee, L (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China. ; Tripathee, L (通讯作者)，Himalayan Environm Res Inst HERI, Kathmandu, Nepal.
发表日期	2021
ISSN	1976-6912
EISSN	2287-1160
卷号	15 期号:4
英文摘要	This study was conducted in the Central Himalayan middle hills to understand the nature of polycyclic aromatic hydrocarbons (PAHs) embedded in aerosol particles, their sources and human health risk assessments. The level of sum of 15 particlephase PAHs was between 9 and 335 ng/m(3), with an average concentration of 73 +/- 66 ng/m(3). There were strong seasonal differences in total suspended particles (TSP) and particle-bound PAH concentrations with higher concentrations in winter, followed by premonsoon and lowest in monsoon. The main contributor to the suspended particles was 5-ring PAHs (32%), followed by 4-ring (29%), 6-ring (28%), and 3-ring PAHs (11%). Conversely, the gas-phase PAHs showed that 3-ring PAHs contributed utmost to the total particles. The molecular ratios and principal component analysis indicated that both petrogenic and pyrogenic sources, particularly fossil fuel combustion, biomass combustion, and car exhausts, were the major sources of PAHs. The overall average Benzo (a)pyrene equivalent concentration of particulate PAHs was 11.71 ng/m(3), which substantially exceeded the WHO guideline (1 ng/m(3)), and indicated the potential health risks for local residents. The average lifetime inhalation cancer risk (ILCR) estimates associated with carcinogenic PAHs was 8.78x 10(-6) for adults, suggesting the possible cancer risk and 2.47 x10(-5) for children, signifying extreme carcinogenic effects of PAHs on children's health. Therefore, strict measures should be taken to reduce PAHs emissions in the region.
关键词	AIR PARTITION-COEFFICIENTS BIOMASS BURNING EMISSIONS TOXIC EQUIVALENCY FACTORS INDO-GANGETIC PLAINS HYDROCARBONS PAHS SOURCE APPORTIONMENT CRYOSPHERIC CHANGE KATHMANDU VALLEY ISOMER-RATIOS 3RD POLE
英文关键词	Aerosol; Polycyclic aromatic hydrocarbons; Long-range transport; Himalayas; Nepal
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000756927900001
来源期刊	ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254660
作者单位	[Maharjan, Linda; Tripathee, Lekhendra; Kang, Shichang; Chen, Pengfei; Zheng, Huijun; Li, Quanlian] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China; [Maharjan, Linda; Kang, Shichang; Zheng, Huijun] Univ Chinese Acad Sci, Beijing, Peoples R China; [Tripathee, Lekhendra] Himalayan Environm Res Inst HERI, Kathmandu, Nepal; [Kang, Shichang] Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; [Ambade, Balram] Natl Inst Technol, Dept Chem, Jamshedpur 831014, Bihar, India; [Shrestha, Kundan Lal] Kathmandu Univ, Dept Environm Sci & Engn, Dhulikhel, Nepal; [Sharma, Chhatra Mani] Tribhuvan Univ, Cent Dept Environm Sci, Kathmandu, Nepal
推荐引用方式 GB/T 7714	Maharjan, Linda,Tripathee, Lekhendra,Kang, Shichang,et al. Characteristics of Atmospheric Particle-bound Polycyclic Aromatic Compounds over the Himalayan Middle Hills: Implications for Sources and Health Risk Assessment[J]. 中国科学院西北生态环境资源研究院,2021,15(4).
APA	Maharjan, Linda.,Tripathee, Lekhendra.,Kang, Shichang.,Ambade, Balram.,Chen, Pengfei.,...&Sharma, Chhatra Mani.(2021).Characteristics of Atmospheric Particle-bound Polycyclic Aromatic Compounds over the Himalayan Middle Hills: Implications for Sources and Health Risk Assessment.ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT,15(4).
MLA	Maharjan, Linda,et al."Characteristics of Atmospheric Particle-bound Polycyclic Aromatic Compounds over the Himalayan Middle Hills: Implications for Sources and Health Risk Assessment".ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT 15.4(2021).