2009
DOI: 10.5194/acpd-9-19939-2009
|View full text |Cite
Preprint
|
Sign up to set email alerts
|

Chirality and origin of atmospheric humic-like substances

Abstract: Abstract. Aerosol water extracts and atmospheric humic-like substances (HULIS) obtained from PM2.5-fraction aerosol samples collected in a rural/continental background environment and in an urban environment in spring and summer, and at a tropical site that was heavily impacted by biomass burning were studied. Mean organic matter-to-organic carbon mass conversion factor and standard deviation of 2.04±0.06 were derived for HULIS from biomass burning. Mean atmospheric concentrations of HULIS for the rural and ur… Show more

Help me understand this report
View published versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

2
9
0

Year Published

2012
2012
2016
2016

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 10 publications
(11 citation statements)
references
References 58 publications
2
9
0
Order By: Relevance
“…The ambient HULIS concentrations in our TSP ambient samples ranged from 3.3 to 13.4 µg m −3 , which were compared with those available in the literature in locations including South China, Europe, Amazonia, and New Zealand (Zappoli et al 1999;Mayol-Bracero et al 2002;Kiss et al 2002;Samburova et al 2005;Duarte et al 2007;Krivácsy et al 2008;Lin et al 2009Lin et al , 2010Baduel et al 2010;Salma et al 2010; Table 2). The concentrations of HULIS in MFS are 5.7 and 3.3 µg m −3 , in summer and winter, which are different to the concentrations of HULIS in UT and WS.…”
Section: Abundance Of Hulis In Tspmentioning
confidence: 99%
“…The ambient HULIS concentrations in our TSP ambient samples ranged from 3.3 to 13.4 µg m −3 , which were compared with those available in the literature in locations including South China, Europe, Amazonia, and New Zealand (Zappoli et al 1999;Mayol-Bracero et al 2002;Kiss et al 2002;Samburova et al 2005;Duarte et al 2007;Krivácsy et al 2008;Lin et al 2009Lin et al , 2010Baduel et al 2010;Salma et al 2010; Table 2). The concentrations of HULIS in MFS are 5.7 and 3.3 µg m −3 , in summer and winter, which are different to the concentrations of HULIS in UT and WS.…”
Section: Abundance Of Hulis In Tspmentioning
confidence: 99%
“…BrC refers to organic matter in atmospheric particles that absorb light with a strong wavelength dependence (Andreae and Gelencsér, 2006;Alexander et al, 2008;Moise et al, 2015). It exists in various forms, such as soil-derived humic materials, humic-like substances (HULIS), organic materials from combustion processes, bioaerosols (Andreae and Gelencsér, 2006;Salma et al, 2010) and secondary formation in the atmosphere (Laskin et al, 2015;Zarzana et al, 2012;Nguyen et al, 2013;Powelson et al, 2014). Although the chemical composition of BrC is highly complex, light absorption by BrC in the ultraviolet-visible region, quantified by the mass absorption coefficient (MAC) (typically in the range of 0.001-0.1 m 2 g −1 at 500 nm of wavelength , is ascribed to the π -π * and n-π * bond transitions of electrons in the chemicals present.…”
Section: Introductionmentioning
confidence: 99%
“…However, it is found that the HULIS samples isolated from different environments or sources, and from aerosol samples collected in different seasons can have different properties (Salma et al, , 2010Wex et al, 2007;Lin et al, 2010;Claeys et al, 2012;Fan et al, 2012;Song et al, 2012). Therefore, further efforts will be required in the future to comparative study the HULIS isolating methods, possibly using different HULIS samples isolated from rural, marine and biomass burning aerosol samples, and aerosol samples in different seasons.…”
Section: Environmental Significancementioning
confidence: 99%