Abstract
Stable C–O isotopic composition of loess samples for TSP, PM 10, PM 2.5, and PM 1 at five sites (Yulin, Yanchi, Huanxian, Luochuan, and Xi'an) in Chinese Loess Plateau are examined. The average δ 13C and δ 18O abundances were −6.00‰ and −8.30‰ in TSP, −6.05‰ and −8.22‰ in PM 10, −6.07‰ and −8.33‰ in PM 2.5, and −6.00‰ and −8.28‰ in PM 1, respectively. Little differences were found for δ 13C and δ 18O abundances in four size fractions. The differences of δ 13C between the averages of fugitive dust and bulk soil were smaller than 2‰ at five locations, which implied that the isotopic composition of bulk soil (surface soil) can be used as substitute of fugitive dust carbonate in dust source apportion study. The distribution of CO 3–C, δ 13C and δ 18O in fugitive dust shows that only δ 13C is a powerful tracer of source regions. A database about the δ 13C distribution in soil carbonate in major source regions of Asian dust was summarized for source apportion study of atmospheric dust.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
