Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai
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作者:
Zhao, Mengfei
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East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Zhao, Mengfei
[1
]
Qiao, Ting
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East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Qiao, Ting
[1
]
Li, Yulan
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机构:
Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Li, Yulan
[2
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Tang, Xiaoxing
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Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Tang, Xiaoxing
[2
]
Xiu, Guangli
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East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Xiu, Guangli
[1
]
Yu, Jian Zhen
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Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R ChinaEast China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
Yu, Jian Zhen
[3
]
机构:
[1] East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
Humic-like substances (Hulis), the hydrophobic part of water-soluble organic compounds, have been recognized to play important roles in environmental behavior of PM2..5 in atmosphere. In this study, Hulis and other components of PM2.5, collected in urban Shanghai from September 2013 to August 2014 were analyzed. The annual average concentration of Hulis carbon (Hulis-C) was (2.61 +/- 2.58) mu g/m(3), accounting for about 50% of water-soluble organic carbon (WSOC). The monthly average Hulis-C concentration peaked in December while the lowest was in summer, coinciding with the high and low of levoglucosan and secondary inorganic aerosol (SIA). Biomass burning and secondary formation Were both important sources of Hulis-C, and their contributions showed obvious seasonality. In late autumn and winter, the strong inter-correlations among Hulis-C concentrations, NO3-/SO4- mass ratios and nitrogen oxidation ratios (NOR) were found, suggesting the atmospheric oxidation of NOx to nitrate and related gas-phase reactions may be inter-linked with Hulis-C formation. In summer, photochemical reaction was clearly the major source of Hulis-C. The investigation by backward trajectory analysis showed that the long-range transport from the Northwest brought large amounts of PM2.5 and enhanced Hulis-C and levoglucosan level, indicating biomass burning as a significant source of Hulis-C under this type of synoptic weather conditions. In comparison, Hulis formation associated with the NOx oxidation pathway was mainly associated with the short-range transport from the neighboring cities. Marine aerosol was relatively clean and had little effects on Hulis-C. The CWT (concentration weighted trajectory) model results suggested that the Yangtze River Delta (YRD) region was an important source region of Hulis-C, while the effect of some northwestern areas was not negligible. (C) 2016 Elsevier B.V. All rights reserved.
机构:
Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Altieri, K. E.
;
Seitzinger, S. P.
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Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Rutgers State Univ, NOAA, CMER Program, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Seitzinger, S. P.
;
Carlton, A. G.
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机构:
NOAA, ARL, ASMD, Res Triangle Pk, NC 27711 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Carlton, A. G.
;
Turpin, B. J.
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机构:
Rutgers State Univ, Dept Environm Sci, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Turpin, B. J.
;
Klein, G. C.
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机构:
Christopher Newport Univ, Dept Biol Chem & Environm Sci, Newport News, VA 23606 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Klein, G. C.
;
Marshall, A. G.
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机构:
Florida State Univ, Natl High Magnet Field Lab, Ion Cyclotron Resonance Program, Tallahassee, FL USA
Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
机构:
Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Altieri, K. E.
;
Seitzinger, S. P.
论文数: 0引用数: 0
h-index: 0
机构:
Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Rutgers State Univ, NOAA, CMER Program, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Seitzinger, S. P.
;
Carlton, A. G.
论文数: 0引用数: 0
h-index: 0
机构:
NOAA, ARL, ASMD, Res Triangle Pk, NC 27711 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Carlton, A. G.
;
Turpin, B. J.
论文数: 0引用数: 0
h-index: 0
机构:
Rutgers State Univ, Dept Environm Sci, New Brunswick, NJ 08901 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Turpin, B. J.
;
Klein, G. C.
论文数: 0引用数: 0
h-index: 0
机构:
Christopher Newport Univ, Dept Biol Chem & Environm Sci, Newport News, VA 23606 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA
Klein, G. C.
;
Marshall, A. G.
论文数: 0引用数: 0
h-index: 0
机构:
Florida State Univ, Natl High Magnet Field Lab, Ion Cyclotron Resonance Program, Tallahassee, FL USA
Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USARutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08901 USA