Concentrations and light absorption properties of PM2.5 organic and black carbon based on online measurements in Lanzhou, China

Pengfei Chen,Shichang Kang, Qinyi Gan,Ye Yu,Xianlei Yuan,Yajun Liu,Lekhendra Tripathee,Xiaoxiang Wang,Chaoliu Li

Journal of Environmental Sciences（2023）

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摘要

•Online OC and BC were measured by a newly developed TCA08 coupled with an AE33.•The annual average fbiomass to BC was 27.1% but in winter it increased to 41.6%.•BrC contribute 30.8% to total absorption coefficient with winter maximum of 44.2%.•High AAE370-520 and MACBrC, 370 in winter suggest more impact from biomass burning.

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关键词

Black carbon,Brown carbon,Light absorption,Source,Lanzhou

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