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Dwindling aromatic compounds in fine aerosols from chunk coal to honeycomb briquette combustion.
Wei, Wan; Xie, Qiaorong; Yan, Qin; Hu, Wei; Chen, Shuang; Su, Sihui; Zhang, Donghuan; Wu, Li; Huang, Shu; Zhong, Shujun; Deng, Junjun; Yang, Ting; Li, Jie; Pan, Xiaole; Wang, Zifa; Sun, Yele; Kong, Shaofei; Fu, Pingqing.
Afiliación
  • Wei W; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Xie Q; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Yan Q; Department of Atmospheric Science, School of Environmental Sciences, China University of Geosciences, Wuhan 430074, China.
  • Hu W; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Chen S; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Su S; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Zhang D; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Wu L; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Huang S; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Zhong S; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Deng J; School of Earth System Science, Tianjin University, Tianjin 300072, China.
  • Yang T; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
  • Li J; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
  • Pan X; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
  • Wang Z; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
  • Sun Y; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
  • Kong S; Department of Atmospheric Science, School of Environmental Sciences, China University of Geosciences, Wuhan 430074, China. Electronic address: kongshaofei@cug.edu.cn.
  • Fu P; School of Earth System Science, Tianjin University, Tianjin 300072, China. Electronic address: fupingqing@tju.edu.cn.
Sci Total Environ ; 838(Pt 2): 155971, 2022 Sep 10.
Article en En | MEDLINE | ID: mdl-35597348
ABSTRACT
With the implementation of clean coal policy in China, the chunk coal has been gradually replaced by honeycomb briquette in domestic energies. In this study, the molecular composition of fine particles (PM2.5) from chunk coal and honeycomb briquette combustion is characterized using the Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS). More than 6000 molecular formulae were detected in each PM2.5 sample. A remarkable decrease in unsaturation and aromatic compounds was found from chunk coal to honeycomb briquette derived aerosols. Around 73.6% of the unique CHON compounds in chunk coal are considered to have aromatic structures, while it decreased to 7.3% in honeycomb briquette. Most of these nitroaromatics detected only in chunk coal are highly carcinogenic and mutagenic with 4-6 rings. Moreover, the aromatic compounds in sulfur-containing compounds also showed a significant decrease. Meanwhile, because of the perforated shape and the additives added during the production of honeycomb briquettes, there are more heteroatoms-containing molecules released from honeycomb briquette combustion, which are highly functional compounds with high molecular weight, high degree of oxidation, and low volatility. Our results provide molecular level evidence that the transformation from chunk coal to honeycomb briquette can effectively reduce the emission of aromatic compounds, which is beneficial to assessing and reducing the impacts to climate change as well as human health.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Contaminantes Atmosféricos Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2022 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Contaminantes Atmosféricos Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2022 Tipo del documento: Article País de afiliación: China
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