C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows

Chien-Cheng Jung, Charles C.K. Chou, Chuan Yao Lin, Chuan Chou Shen, Yu Chi Lin, Yi Tang Huang, Chao Yang Tsai, Pei Hsuan Yao, Ci Rong Huang, Wei Ru Huang, Mei June Chen, Shu Hui Huang, Shuen Chin Chang

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Abstract

This study investigated isotopic signatures of carbon (C), lead (Pb) and strontium (Sr) in PM 2.5 samples collected from two paired sites (urban vs. rural/background) in northern Taiwan during the summer of 2015 and the spring of 2016, respectively. Significant seasonality was revealed in the isotopic signatures of C and Pb, whereas no seasonal difference was observed in 87 Sr/ 86 Sr ratio. The values of δ 13 C, 206 Pb/ 207 Pb, and 208 Pb/ 207 Pb were more diverse and exhibited local features in summer. However, during the episodes of continental pollution outbreaks in springtime, the δ 13 C and Pb isotope ratios of PM 2.5 shifted and converged consistently toward the documented characteristics of particulate matters in northern China. Moreover, the results showed that the differences in the Pb and Sr isotopic characteristics between the paired urban and rural sites were statistically insignificant, whereas marginally lower δ 13 C values were observed at the urban site. It was inferred accordingly that a substantial amount of gaseous hydrocarbons emitted in local urban areas could have been converted to secondary organic aerosols with lower δ 13 C. On the contrary, the consistency in the spatial and temporal variations of mass concentration and isotope ratios of Pb at the two sites suggested that East-Asian continental pollution outbreak was the major source of Pb-containing particles in the northern Taiwan during springtime. It is noteworthy that there was neither seasonal nor spatial differences in the 87 Sr/ 86 Sr ratio observed in this study, which suggested that the Sr-containing particles collected in this study could be originating from a common mixture of sources, including not only natural dust but also the anthropogenic emissions, coal-combustion for instance. This investigation upon the C-Pb-Sr isotopic features evidenced the substantial impacts of the continental pollution outbreaks on the aerosol composition and air quality in the downwind areas of the East-Asian winter monsoons.

Original languageEnglish
Pages (from-to)88-97
Number of pages10
JournalAtmospheric Research
Volume223
DOIs
Publication statusPublished - 2019 Jul 15

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strontium
outflow
urban site
pollution
isotope
aerosol composition
summer
seasonality
particulate matter
air quality
monsoon
temporal variation
spatial variation
urban area
hydrocarbon
aerosol
dust
winter
carbon

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

Jung, Chien-Cheng ; Chou, Charles C.K. ; Lin, Chuan Yao ; Shen, Chuan Chou ; Lin, Yu Chi ; Huang, Yi Tang ; Tsai, Chao Yang ; Yao, Pei Hsuan ; Huang, Ci Rong ; Huang, Wei Ru ; Chen, Mei June ; Huang, Shu Hui ; Chang, Shuen Chin. / C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows In: Atmospheric Research. 2019 ; Vol. 223. pp. 88-97.
@article{f1bab6a7e52b4c4386bc8d919e592d46,
title = "C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows",
abstract = "This study investigated isotopic signatures of carbon (C), lead (Pb) and strontium (Sr) in PM 2.5 samples collected from two paired sites (urban vs. rural/background) in northern Taiwan during the summer of 2015 and the spring of 2016, respectively. Significant seasonality was revealed in the isotopic signatures of C and Pb, whereas no seasonal difference was observed in 87 Sr/ 86 Sr ratio. The values of δ 13 C, 206 Pb/ 207 Pb, and 208 Pb/ 207 Pb were more diverse and exhibited local features in summer. However, during the episodes of continental pollution outbreaks in springtime, the δ 13 C and Pb isotope ratios of PM 2.5 shifted and converged consistently toward the documented characteristics of particulate matters in northern China. Moreover, the results showed that the differences in the Pb and Sr isotopic characteristics between the paired urban and rural sites were statistically insignificant, whereas marginally lower δ 13 C values were observed at the urban site. It was inferred accordingly that a substantial amount of gaseous hydrocarbons emitted in local urban areas could have been converted to secondary organic aerosols with lower δ 13 C. On the contrary, the consistency in the spatial and temporal variations of mass concentration and isotope ratios of Pb at the two sites suggested that East-Asian continental pollution outbreak was the major source of Pb-containing particles in the northern Taiwan during springtime. It is noteworthy that there was neither seasonal nor spatial differences in the 87 Sr/ 86 Sr ratio observed in this study, which suggested that the Sr-containing particles collected in this study could be originating from a common mixture of sources, including not only natural dust but also the anthropogenic emissions, coal-combustion for instance. This investigation upon the C-Pb-Sr isotopic features evidenced the substantial impacts of the continental pollution outbreaks on the aerosol composition and air quality in the downwind areas of the East-Asian winter monsoons.",
author = "Chien-Cheng Jung and Chou, {Charles C.K.} and Lin, {Chuan Yao} and Shen, {Chuan Chou} and Lin, {Yu Chi} and Huang, {Yi Tang} and Tsai, {Chao Yang} and Yao, {Pei Hsuan} and Huang, {Ci Rong} and Huang, {Wei Ru} and Chen, {Mei June} and Huang, {Shu Hui} and Chang, {Shuen Chin}",
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Jung, C-C, Chou, CCK, Lin, CY, Shen, CC, Lin, YC, Huang, YT, Tsai, CY, Yao, PH, Huang, CR, Huang, WR, Chen, MJ, Huang, SH & Chang, SC 2019, ' C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows ', Atmospheric Research, vol. 223, pp. 88-97. https://doi.org/10.1016/j.atmosres.2019.03.011

C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows . / Jung, Chien-Cheng; Chou, Charles C.K.; Lin, Chuan Yao; Shen, Chuan Chou; Lin, Yu Chi; Huang, Yi Tang; Tsai, Chao Yang; Yao, Pei Hsuan; Huang, Ci Rong; Huang, Wei Ru; Chen, Mei June; Huang, Shu Hui; Chang, Shuen Chin.

In: Atmospheric Research, Vol. 223, 15.07.2019, p. 88-97.

Research output: Contribution to journalArticle

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T1 - C-Sr-Pb isotopic characteristics of PM 2.5 transported on the East-Asian continental outflows

AU - Jung, Chien-Cheng

AU - Chou, Charles C.K.

AU - Lin, Chuan Yao

AU - Shen, Chuan Chou

AU - Lin, Yu Chi

AU - Huang, Yi Tang

AU - Tsai, Chao Yang

AU - Yao, Pei Hsuan

AU - Huang, Ci Rong

AU - Huang, Wei Ru

AU - Chen, Mei June

AU - Huang, Shu Hui

AU - Chang, Shuen Chin

PY - 2019/7/15

Y1 - 2019/7/15

N2 - This study investigated isotopic signatures of carbon (C), lead (Pb) and strontium (Sr) in PM 2.5 samples collected from two paired sites (urban vs. rural/background) in northern Taiwan during the summer of 2015 and the spring of 2016, respectively. Significant seasonality was revealed in the isotopic signatures of C and Pb, whereas no seasonal difference was observed in 87 Sr/ 86 Sr ratio. The values of δ 13 C, 206 Pb/ 207 Pb, and 208 Pb/ 207 Pb were more diverse and exhibited local features in summer. However, during the episodes of continental pollution outbreaks in springtime, the δ 13 C and Pb isotope ratios of PM 2.5 shifted and converged consistently toward the documented characteristics of particulate matters in northern China. Moreover, the results showed that the differences in the Pb and Sr isotopic characteristics between the paired urban and rural sites were statistically insignificant, whereas marginally lower δ 13 C values were observed at the urban site. It was inferred accordingly that a substantial amount of gaseous hydrocarbons emitted in local urban areas could have been converted to secondary organic aerosols with lower δ 13 C. On the contrary, the consistency in the spatial and temporal variations of mass concentration and isotope ratios of Pb at the two sites suggested that East-Asian continental pollution outbreak was the major source of Pb-containing particles in the northern Taiwan during springtime. It is noteworthy that there was neither seasonal nor spatial differences in the 87 Sr/ 86 Sr ratio observed in this study, which suggested that the Sr-containing particles collected in this study could be originating from a common mixture of sources, including not only natural dust but also the anthropogenic emissions, coal-combustion for instance. This investigation upon the C-Pb-Sr isotopic features evidenced the substantial impacts of the continental pollution outbreaks on the aerosol composition and air quality in the downwind areas of the East-Asian winter monsoons.

AB - This study investigated isotopic signatures of carbon (C), lead (Pb) and strontium (Sr) in PM 2.5 samples collected from two paired sites (urban vs. rural/background) in northern Taiwan during the summer of 2015 and the spring of 2016, respectively. Significant seasonality was revealed in the isotopic signatures of C and Pb, whereas no seasonal difference was observed in 87 Sr/ 86 Sr ratio. The values of δ 13 C, 206 Pb/ 207 Pb, and 208 Pb/ 207 Pb were more diverse and exhibited local features in summer. However, during the episodes of continental pollution outbreaks in springtime, the δ 13 C and Pb isotope ratios of PM 2.5 shifted and converged consistently toward the documented characteristics of particulate matters in northern China. Moreover, the results showed that the differences in the Pb and Sr isotopic characteristics between the paired urban and rural sites were statistically insignificant, whereas marginally lower δ 13 C values were observed at the urban site. It was inferred accordingly that a substantial amount of gaseous hydrocarbons emitted in local urban areas could have been converted to secondary organic aerosols with lower δ 13 C. On the contrary, the consistency in the spatial and temporal variations of mass concentration and isotope ratios of Pb at the two sites suggested that East-Asian continental pollution outbreak was the major source of Pb-containing particles in the northern Taiwan during springtime. It is noteworthy that there was neither seasonal nor spatial differences in the 87 Sr/ 86 Sr ratio observed in this study, which suggested that the Sr-containing particles collected in this study could be originating from a common mixture of sources, including not only natural dust but also the anthropogenic emissions, coal-combustion for instance. This investigation upon the C-Pb-Sr isotopic features evidenced the substantial impacts of the continental pollution outbreaks on the aerosol composition and air quality in the downwind areas of the East-Asian winter monsoons.

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