Search: onr:"swepub:oai:DiVA.org:su-192582" >
Compound-Specific R...
Compound-Specific Radiocarbon Analysis of Low Molecular Weight Dicarboxylic Acids in Ambient Aerosols Using Preparative Gas Chromatography : Method Development
- Article/chapterEnglish2021
Publisher, publication year, extent ...
-
2021-01-08
-
American Chemical Society (ACS),2021
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-192582
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192582URI
-
https://doi.org/10.1021/acs.estlett.0c00887DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Low molecular weight dicarboxylic acids constitute a large fraction of atmospheric organic aerosols, which impact atmospheric radiative forcing and hence Earth's climate. Radiocarbon (C-14) is a unique approach to unambiguously distinguishing the relative contributions of biomass-derived and fossil sources. Here, we developed a compound-specific radiocarbon analysis (CSRA) method for individual dicarboxylic acids in atmospheric particulates. Specifically, the method starts with a dibutyl ester derivatization technique, followed by separation and harvesting of single compounds employing AIMS a preparative capillary gas chromatography in sufficient amounts for offline C-14 measurement with accelerator mass spectrometry. The optimized preparative steps yielded recoveries of >60% and purities of >99% for target molecules. The radiocarbon isotope compositions determined for reference standards taken through the entire method agree well with the original composition of each standard (R-2 = 0.9998). The applicability of the approach was demonstrated with ambient aerosol samples representing contrasting air mass regimes. This yielded two radically different yet system-consistent precursor sources. A minimum size of 50 mu g of C of ambient dicarboxylic acids is needed for credible C-14 measurement. The established method for CSRA of dicarboxylic acids demonstrates a new analytical dimension for studies of the source and evolution of atmospheric secondary organic aerosols.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Cheng, Zhineng
(author)
-
Gustafsson, ÖrjanStockholms universitet,Institutionen för miljövetenskap(Swepub:su)ogust
(author)
-
Kawamura, Kimitaka
(author)
-
Jin, Biao
(author)
-
Zhu, Sanyuan
(author)
-
Tang, Tiangang
(author)
-
Zhang, Bolong
(author)
-
Li, Jun
(author)
-
Zhang, Gan
(author)
-
Stockholms universitetInstitutionen för miljövetenskap
(creator_code:org_t)
Related titles
-
In:Environmental Science and Technology Letters: American Chemical Society (ACS)8:2, s. 135-1412328-8930
Internet link
Find in a library
To the university's database
- By the author/editor
-
Xu, Buqing
-
Cheng, Zhineng
-
Gustafsson, Örja ...
-
Kawamura, Kimita ...
-
Jin, Biao
-
Zhu, Sanyuan
-
show more...
-
Tang, Tiangang
-
Zhang, Bolong
-
Li, Jun
-
Zhang, Gan
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
- Articles in the publication
-
Environmental Sc ...
- By the university
-
Stockholm University