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Emission characteristics of carbonyl compounds from open burning of typical subtropical biomass in South China.
Zhang, Chunlin; Cai, Yiting; Yao, Qian; Liu, Xiaoting; Song, Lin; Li, Jiangyong; Deng, Shuo; Wang, Hao; Wang, Boguang.
Afiliación
  • Zhang C; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China.
  • Cai Y; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China.
  • Yao Q; South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, Guangdong, 510535, China.
  • Liu X; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China; Department of Ophthalmology, The First Affiliated Hospital, Jinan University,
  • Song L; School of Environment, Jinan University, Guangzhou, 511443, China.
  • Li J; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China.
  • Deng S; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China.
  • Wang H; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China. Electronic address: wanghao@jnu.edu.cn.
  • Wang B; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China.
Chemosphere ; 350: 140979, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38141673
ABSTRACT
Open biomass burning (OBB) is one of the largest primary emission sources for atmospheric carbonyl compounds, key precursors for ozone and secondary organic aerosol pollution. To clarify the carbonyl emissions, the comprehensive characteristics of C1-C10 carbonyl compounds from open burning of seven typical subtropical biomass in China were investigated in this study, which included subtropical plants and agricultural residues. Total 27 carbonyl compounds were detected. The total EFs were 2824 mg kg-1 with 95% confidence interval (CI) [2418, 3322] for burning subtropical plants and 4080 mg kg-1 with 95% CI [3446, 4724] for burning agriculture residues, respectively. The EFs were 2-3 orders of magnitude larger than previous values in China. Aliphatic aldehydes were the largest group of carbonyl groups, with acetaldehyde, as the most abundant carbonyl species (about 30% contribution). Formaldehyde, acetone, acrolein, glyoxal, methylglyoxal, butanone, isovaleraldehyde, and m-tolualdehyde were also found to be abundant and varying with the types of biomass burnt. Formaldehyde emission ratios to acetonitrile and CO were lower than those in previous studies both for burning plants and agricultural residues. There were significant variabilities in the emission ratios and factors among different types of OBBs. Strong positive correlations were found between carbonyl emissions and CO emissions and water content in biomass; furthermore, total carbonyl concentrations measured in the flaming stage were higher than those in the smoldering one. This study provides important fundamental measurement data on carbonyl emissions from burning typical subtropical plants and agricultural residues, which will help improve the quality of emission inventories and better understand the potential impacts of OBB on regional air quality in southern China.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Atmosféricos País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Atmosféricos País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido