Journal Pre-proof Light absorption properties of elemental carbon (EC) and water-soluble brown carbon (WS–BrC) in the Kathmandu Valley, Nepal: A 5-year study Pengfei Chen, Shichang Kang, Lekhendra Tripathee, Kirpa Ram, Maheswar Rupakheti, Arnico K. Panday, Qianggong Zhang, Junming Guo, Xiaoxiang Wang, Tao Pu, Chaoliu Li PII: S0269-7491(19)34274-5 DOI: https://doi.org/10.1016/j.envpol.2020.114239 Reference: ENPO 114239 To appear in: Environmental Pollution Received Date: 1 August 2019 Revised Date: 22 November 2019 Accepted Date: 18 February 2020 Please cite this article as: Chen, P., Kang, S., Tripathee, L., Ram, K., Rupakheti, M., Panday, A.K., Zhang, Q., Guo, J., Wang, X., Pu, T., Li, C., Light absorption properties of elemental carbon (EC) and water-soluble brown carbon (WS–BrC) in the Kathmandu Valley, Nepal: A 5-year study, Environmental Pollution (2020), doi: https://doi.org/10.1016/j.envpol.2020.114239. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier Ltd.