Login / Signup

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

Xuan LiuJay R TurnerChristopher R OxfordJacob McNeillBrenna WalshEmmie Le RoyCrystal L WeagleEmily StoneHaihui ZhuWenyu LiuZilin WeiNicole P HyslopJason GiacomoAnn M DillnerAbdus SalamAl-Amin HossenZubayer IslamIhab AbboudClement AkoshileOmar Amador-MuñozNguyen Xuan AnhAraya AsfawRajasekhar BalasubramanianRachel Ying-Wen ChangCraig CoburnSagnik DeyDavid J DinerJinlu DongTareq FarrahPaterne GahunguRebecca M GarlandMichel Grutter de la MoraSina HasheminassabJuanette JohnJhoon KimJong Sung KimKristy LangermanPei-Chen LeePuji LestariYang LiuTesfaye MamoMathieu MartinsOlga L Mayol-BraceroMogesh NaidooSang Seo ParkYoav SchechnerRobyn SchofieldSachchida Nand TripathiEli WindwerMing-Tsang WuQiang ZhangMichael BrauerYinon RudichRandall V Martin
Published in: ACS ES&T air (2024)
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/m 3 ) in PM 2.5 is also found in Dhaka (Bangladesh) along with a high average TEO level (6 μg/m 3 ). 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.
Keyphrases