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Sökning: onr:"swepub:oai:DiVA.org:su-192582" > Compound-Specific R...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003467naa a2200481 4500
001oai:DiVA.org:su-192582
003SwePub
008210426s2021 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1925822 URI
0247 a https://doi.org/10.1021/acs.estlett.0c008872 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Xu, Buqing4 aut
2451 0a Compound-Specific Radiocarbon Analysis of Low Molecular Weight Dicarboxylic Acids in Ambient Aerosols Using Preparative Gas Chromatography :b Method Development
264 c 2021-01-08
264 1b American Chemical Society (ACS),c 2021
338 a print2 rdacarrier
520 a 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.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
650 7a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng
653 a Atmospheric chemistry
653 a Carbon
653 a Chromatography
653 a Carbon-14
653 a Aerosols
7001 a Cheng, Zhineng4 aut
7001 a Gustafsson, Örjanu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)ogust
7001 a Kawamura, Kimitaka4 aut
7001 a Jin, Biao4 aut
7001 a Zhu, Sanyuan4 aut
7001 a Tang, Tiangang4 aut
7001 a Zhang, Bolong4 aut
7001 a Li, Jun4 aut
7001 a Zhang, Gan4 aut
7102 a Stockholms universitetb Institutionen för miljövetenskap4 org
7730 t Environmental Science and Technology Lettersd : American Chemical Society (ACS)g 8:2, s. 135-141q 8:2<135-141x 2328-8930
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192582
8564 8u https://doi.org/10.1021/acs.estlett.0c00887

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