Measurement report: Source apportionment of carbonaceous aerosol using dual-carbon isotopes (<sup>13</sup>C and <sup>14</sup>C) and levoglucosan in three northern Chinese cities during 2018–2019
نویسندگان
چکیده
Abstract. To investigate the characteristics and changes in sources of carbonaceous aerosols northern Chinese cities after implementation Action Plan for Air Pollution Prevention Control 2013, we collected PM2.5 samples from three representative inland cities, i.e., Beijing (BJ), Xi'an (XA), Linfen (LF), January 2018 to April 2019. Elemental carbon (EC), organic (OC), levoglucosan, stable isotope, radiocarbon were measured quantify aerosol, combined with Latin hypercube sampling. The best estimate source apportionment showed that emissions liquid fossil fuels contributed 29.3±12.7 %, 24.9±18.0 20.9±12.3 % total (TC) BJ, XA, LF, respectively, whereas coal combustion 15.5±8.8 20.9±18.0 42.9±19.4 respectively. Non-fossil accounted 55±11 54±10 36±14 TC In 44.8±26.8 non-fossil attributed biomass burning. highest contributors OC LF XA (74.2±9.6 43.2±10.8 respectively), those BJ (66.8±13.9 %). main EC sources, accounting 91.4±7.5 66.8±23.8 88.4±10.8 decline (6 %–16 %) contributions since indicates effectiveness air quality management. We suggest specific measures targeted at combustion, burning, vehicle different should be strengthened future.
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2022
ISSN: ['1680-7316', '1680-7324']
DOI: https://doi.org/10.5194/acp-22-6255-2022