Direct observation of aqueous secondary organic aerosol from biomass-burning emissions

被引：270

作者：

Gilardoni, Stefania ^{[1
]}

Massoli, Paola ^{[2
]}

Paglione, Marco ^{[1
]}

Giulianelli, Lara ^{[1
]}

Carbone, Claudio ^{[1
,6
]}

Rinaldi, Matteo ^{[1
]}

Decesari, Stefano ^{[1
]}

Sandrini, Silvia ^{[1
]}

Costabile, Francesca ^{[3
]}

Gobbi, Gian Paolo ^{[3
]}

Pietrogrande, Maria Chiara ^{[4
]}

Visentin, Marco ^{[4
]}

Scotto, Fabiana ^{[5
]}

Fuzzi, Sandro ^{[1
]}

Facchini, Maria Cristina ^{[1
]}

机构：

[1] Italian Natl Res Council, Inst Atmospher Sci & Climate, I-40129 Bologna, Italy

[2] Aerodyne Res Inc, Billerica, MA 01821 USA

[3] Italian Natl Res Council, Inst Atmospher Sci & Climate, I-00133 Rome, Italy

[4] Univ Ferrara, Dept Chem & Pharmaceut Sci, I-44121 Ferrara, Italy

[5] Agenzia Reg Prevenz Ambiente & Energia, I-40139 Bologna, Italy

[6] CNR Res Area, Proambiente Scrl, I-40129 Bologna, Italy

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2016年 / 113卷 / 36期

关键词：

particulate matter; air quality; secondary organic aerosol; biomass burning; aqueous processing; RESIDENTIAL WOOD COMBUSTION; MULTIVARIATE CURVE RESOLUTION; MASS-SPECTROMETRY; PO VALLEY; SOURCE APPORTIONMENT; CHEMICAL-CHARACTERIZATION; SIZE DISTRIBUTIONS; OPTICAL-PROPERTIES; INORGANIC AEROSOL; LIGHT-ABSORPTION;

D O I：

10.1073/pnas.1602212113

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The mechanisms leading to the formation of secondary organic aerosol (SOA) are an important subject of ongoing research for both air quality and climate. Recent laboratory experiments suggest that reactions taking place in the atmospheric liquid phase represent a potentially significant source of SOA mass. Here, we report direct ambient observations of SOA mass formation from processing of biomass-burning emissions in the aqueous phase. Aqueous SOA (aqSOA) formation is observed both in fog water and in wet aerosol. The aqSOA from biomass burning contributes to the "brown" carbon (BrC) budget and exhibits light absorption wavelength dependence close to the upper bound of the values observed in laboratory experiments for fresh and processed biomass-burning emissions. We estimate that the aqSOA from residential wood combustion can account for up to 0.1-0.5 Tg of organic aerosol (OA) per y in Europe, equivalent to 4-20% of the total OA emissions. Our findings highlight the importance of aqSOA from anthropogenic emissions on air quality and climate.

引用

页码：10013 / 10018

页数：6

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