Sökning: WFRF:(Xu Buqing) > Compound-Specific R...
Fältnamn | Indikatorer | Metadata |
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000 | 03467naa a2200481 4500 | |
001 | oai:DiVA.org:su-192582 | |
003 | SwePub | |
008 | 210426s2021 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1925822 URI |
024 | 7 | a https://doi.org/10.1021/acs.estlett.0c008872 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Xu, Buqing4 aut |
245 | 1 0 | a 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 | 1 | b 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 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe |
650 | 7 | a 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 | |
700 | 1 | a Cheng, Zhineng4 aut |
700 | 1 | a Gustafsson, Örjanu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)ogust |
700 | 1 | a Kawamura, Kimitaka4 aut |
700 | 1 | a Jin, Biao4 aut |
700 | 1 | a Zhu, Sanyuan4 aut |
700 | 1 | a Tang, Tiangang4 aut |
700 | 1 | a Zhang, Bolong4 aut |
700 | 1 | a Li, Jun4 aut |
700 | 1 | a Zhang, Gan4 aut |
710 | 2 | a Stockholms universitetb Institutionen för miljövetenskap4 org |
773 | 0 | t Environmental Science and Technology Lettersd : American Chemical Society (ACS)g 8:2, s. 135-141q 8:2<135-141x 2328-8930 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192582 |
856 | 4 8 | u https://doi.org/10.1021/acs.estlett.0c00887 |
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