@article{fdi:010091992, title = {{S}easonal variation of the chemical content and source identification of {PM}2.5 in a mixed landuse in {I}ran}, author = {{S}hahne, {M}. {Z}. and {H}aghighat, {N}. {R}. and {H}osseini, {V}. and {U}zu, {G}a{\¨e}lle and {T}aheri, {A}. and {D}arfeuil, {S}ophie and {G}inot, {P}atrick and {B}esombes, {J}. {L}. and {P}in, {M}. and {J}affrezo, {J}. {L}. and {S}hamloo, {A}.}, editor = {}, language = {{ENG}}, abstract = {{S}. {K}araj is the fourth largest city upwind of {T}ehran, {I}ran's capital. {T}he complexity of emission sources in and around the city makes the development of targeted mitigation policies more challenging. {T}his study is focused on identifying the mass concentration of {PM}2.5, along with its chemical composition and associated sources. {B}iweekly fine {PM} samples, started in {O}ctober 2020 and lasted for one year,were obtained at an air quality monitoring station and analyzed by ion chromatography paired with a mass spectrometer ({IC}-{MS}) and thermal-optical analysis ({TOA}). {A}nnual average concentration of {PM}2.5 was 29.61 +/- 17.84 mu g/m(3), ranging from 9.16 mu g/m(3) (in {D}ecember 2020) to 99.04 mu g/m(3) (in {N}ovember 2020). {B}ased on the chemical mass closure ({CMC}) results, organic matter ({OM}) was a principal constituent, accounting for 31% of {PM}2.5 mass. {T}he nitrate, dust and non-sea sulfate contributed most significantly to {PM} mass by accounting for 15%, 13% and 11%, respectively. {T}he diagnostic ratios reflected that, anthropogenic sources (mobile sources and biomass combustion) play a significant role in {PM} concentration. {T}he study's findings are significant as they not only influence policy-making for controlling {PM} in one of the largest cities but also have a broader impact on air pollution in the capital city, located just downwind. {T}he insights provided by this study on primary components in fine particulate matter will be instrumental in leveraging these findings alongside emission inventory and observational data. {T}his integration aims to inform policymaking processes and facilitate the creation of science-based policies, while also furnishing essential data for health impact assessments.}, keywords = {{F}ine particulate matter ({PM}2.5) ; {S}easonal variation ; {C}hemical mass ; closure ; {D}iagnostic ratio ; {IRAN}}, booktitle = {}, journal = {{I}nternational {J}ournal of {E}nvironmental {S}cience and {T}echnology}, volume = {22}, numero = {}, pages = {4157--4172}, ISSN = {1735-1472}, year = {2025}, DOI = {10.1007/s13762-024-06138-x}, URL = {https://www.documentation.ird.fr/hor/fdi:010091992}, }