Elemental Characterization of Ambient Particulate Matter for a Globally Distributed Monitoring Network: Methodology and Implications

Xuan Liu, Jay R. Turner, Christopher R. Oxford, Jacob McNeill, Brenna Walsh, Emmie Le Roy, Crystal L. Weagle, Emily Stone, Haihui Zhu, Wenyu Liu, Zilin Wei, Nicole P. Hyslop, Jason Giacomo, Ann M. Dillner, Abdus Salam, Al-amin Hossen, Zubayer Islam, Ihab Abboud, Clement Akoshile, Omar Amador-MuñozNguyen Xuan Anh, Araya Asfaw, Rajasekhar Balasubramanian, Rachel Ying-Wen Chang, Craig Coburn, Sagnik Dey, David J. Diner, Jinlu Dong, Tareq Farrah, Paterne Gahungu, Rebecca M. Garland, Michel Grutter de la Mora, Sina Hasheminassab, Juanette John, Jhoon Kim, Jong Sung Kim, Kristy Langerman, Pei-Chen Lee, Puji Lestari, Yang Liu, Tesfaye Mamo, Mathieu Martins, Olga L. Mayol-Bracero, Mogesh Naidoo, Sang Seo Park, Yoav Schechner, Robyn Schofield, Sachchida N. Tripathi, Eli Windwer, Ming-Tsang Wu, Qiang Zhang, Michael Brauer, Yinon Rudich, Randall V. Martin

Research output: Contribution to journalArticlepeer-review

Abstract

Global ground-level measurements of elements in ambient particulate matter (PM) can provide valuable information to understand the distribution of dust and trace elements, assess health impacts, and investigate emission sources. We use X-ray fluorescence spectroscopy to characterize the elemental composition of PM samples collected from 27 globally distributed sites in the Surface PARTiculate mAtter Network (SPARTAN) over 2019–2023. Consistent protocols are applied to collect all samples and analyze them at one central laboratory, which facilitates comparison across different sites. Multiple quality assurance measures are performed, including applying reference materials that resemble typical PM samples, acceptance testing, and routine quality control. Method detection limits and uncertainties are estimated. Concentrations of dust and trace element oxides (TEO) are determined from the elemental dataset. In addition to sites in arid regions, a moderately high mean dust concentration (6 μg/m3) in PM2.5 is also found in Dhaka (Bangladesh) along with a high average TEO level (6 μg/m3). High carcinogenic risk (>1 cancer case per 100000 adults) from airborne arsenic is observed in Dhaka (Bangladesh), Kanpur (India), and Hanoi (Vietnam). Industries of informal lead-acid battery and e-waste recycling as well as coal-fired brick kilns likely contribute to the elevated trace element concentrations found in Dhaka.
Original languageEnglish
Pages (from-to)283-293
Number of pages11
JournalACS EST Air
Volume1
Issue number4
Early online date11 Mar 2024
DOIs
StatePublished - 12 Apr 2024

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