Integrating dual C and N isotopic approach to elemental and mathematical solutions for improving the PM source apportionment in complex urban and industrial cities: Case of Tarragona - Spain

Sánchez, Edson Plasencia; Sánchez-Soberón, Francisco; Rovira, Joaquim; Sierra, Jordi; Schuhmacher, Marta; Soler, Albert; Torrentó, Clara; Rosell, Mònica

doi:10.1016/j.atmosenv.2022.119449

Cited by 2 publications

(1 citation statement)

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“…The Bayesian mixing model stands out as one of the most widely utilized models Xu and Xiao 2023;Tang et al, 2020). The stable carbon isotope technique can also be combined with other source tracers to further enhance the accuracy of source apportionment of carbonaceous aerosols (Jiang et al, 2022;Plasencia Sánchez et al, 2023;Ceburnis et al, 2011;Lim et al, 2022). However, to our knowledge, no study has employed the carbon isotope technique to estimate the source contribution of both fresh and aged SOA before, owing to the challenging measurement of the carbon isotope profiles for these two sources.…”

Section: Introductionmentioning

confidence: 99%

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Wei,

Peng,

Cao

et al. 2024

Preprint

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Abstract. The investigation of the water-soluble characteristics of secondary organic carbon (SOC) is essential for a more comprehensive understanding of its climate effects. However, due to the limitations of the existing source apportionment methods, the water solubility of different types of SOC remains uncertain. This study analyzed stable carbon isotope and mass spectra signatures of total carbon (TC) and water-soluble organic carbon (WSOC) in ambient PM2.5 samples for one year and established stable carbon isotope profiles of fresh and aged SOC. Furthermore, the Bayesian stable isotope mixing (BSIM) model was employed to reveal the water solubility characteristics of fresh and aged SOC in a coastal megacity of China. WSOC was dominated by secondary sources, with fresh and aged SOC contributing 28.1 % and 45.2 %, respectively. Water-insoluble organic carbon (WIOC) was dominated by primary sources, to which fresh and aged SOC contributed 23.2 % and 13.4 %. We also found the aging degree of SOC has considerable impacts on its water solubility due to the much higher water-soluble fraction of aged SOC (76.5 %) than fresh SOC (54.2 %). Findings of this study may provide a new perspective for further investigation of the hygroscopicity effects of SOC with different aging degrees on light extinction and climate change.

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Section: Introductionmentioning

confidence: 99%

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Wei,

Peng,

Cao

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Wei,

Peng,

Cao

et al. 2024

Atmos. Chem. Phys.

View full text Add to dashboard Cite

Abstract. The investigation of the water-soluble characteristics of secondary organic carbon (SOC) is essential for a more comprehensive understanding of its climate effects. However, due to the limitations of the existing source apportionment methods, the water solubility of different types of SOC remains uncertain. This study analyzed stable carbon isotope and mass spectral signatures of total carbon (TC) and water-soluble organic carbon (WSOC) in ambient PM2.5 samples for 1 year and established stable carbon isotope profiles of fresh and aged SOC. Furthermore, a Bayesian stable isotope mixing (BSIM) model was employed to reveal the water solubility characteristics of fresh and aged SOC in a coastal megacity of China. WSOC was dominated by secondary sources, with fresh and aged SOC contributing 28.1 % and 45.2 %, respectively. Water-insoluble organic carbon (WIOC) was dominated by primary sources, to which fresh and aged SOC contributed 23.2 % and 13.4 %. We also found that the aging degree of SOC has considerable impacts on its water solubility due to the much higher water-soluble fraction of aged SOC (76.5 %) compared to fresh SOC (54.2 %). Findings of this study may provide a new perspective for further investigation of the hygroscopicity effects of SOC with different aging degrees on light extinction and climate change.

show abstract

Integrating dual C and N isotopic approach to elemental and mathematical solutions for improving the PM source apportionment in complex urban and industrial cities: Case of Tarragona - Spain

Cited by 2 publications

References 89 publications

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

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Integrating dual C and N isotopic approach to elemental and mathematical solutions for improving the PM source apportionment in complex urban and industrial cities: Case of Tarragona - Spain

Cited by 2 publications

References 89 publications

Characterizing water solubility of fresh and aged secondary organic aerosol in PM2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM2.5 with the stable carbon isotope technique

Contact Info

Product

Resources

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Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique

Characterizing water solubility of fresh and aged secondary organic aerosol in PM_2.5 with the stable carbon isotope technique