SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Xu Buqing)
 

Search: WFRF:(Xu Buqing) > Compound-Specific R...

  • Xu, Buqing (author)

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

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view