Chemical characteristics of atmospheric carbonyl compounds and source identification of formaldehyde in Wuhan, Central China

Z. Yang; H. R. Cheng; Z. W. Wang; J. Peng; J. X. Zhu; X. P. Lyu; Hai Guo

doi:10.1016/j.atmosres.2019.05.020

Chemical characteristics of atmospheric carbonyl compounds and source identification of formaldehyde in Wuhan, Central China

Z. Yang, H. R. Cheng^*, Z. W. Wang, J. Peng, J. X. Zhu, X. P. Lyu, Hai Guo

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

49 Citations (Scopus)

Abstract

The chemical characteristics of carbonyl compounds were investigated concurrently at urban (ZY) and suburban (JX) sites in Wuhan in 2017. Thirteen carbonyl compounds were quantified, with average total mixing ratios of 11.29 ± 3.85 ppbv at ZY and 8.72 ± 3.75 ppbv at JX. Formaldehyde (HCHO), acetaldehyde (CH₃CHO) and acetone (CH₃COCH₃) were the three most abundant atmospheric carbonyl compounds, accounting for >85% of the total carbonyl compound mixing ratio at both sites. HCHO exhibited highest concentrations during summer and lowest concentrations during winter at ZY and JX. In contrast, CH₃CHO and CH₃COCH₃ showed an opposite seasonal trend, suggesting that HCHO may be mainly generated by photochemical reactions in summer, while CH₃CHO and CH₃COCH₃ might be originate from primary emissions in winter. Diurnal variations were assessed, with HCHO exhibiting peak values at midnight in all seasons, with levels associated with diesel-fuel vehicle emissions. High ratios of C₁/C₂ and C₂/C₃ were observed in summer at ZY and JX, suggesting biogenic sources significantly contribute to carbonyl compound formation. Furthermore, linear regression analysis showed a high HCHO contribution from primary sources in winter (73.5% at ZY, 58.6% at JX) and secondary sources in summer (67.2% at ZY, 47.4% at JX). The results of this study will help formulate effective emission control strategies for carbonyl pollution in Wuhan.

Original language	English
Pages (from-to)	95-106
Number of pages	12
Journal	Atmospheric Research
Volume	228
Early online date	20 May 2019
DOIs	https://doi.org/10.1016/j.atmosres.2019.05.020
Publication status	Published - Nov 2019

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Atmospheric Science

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Carbonyls compounds
Diurnal variation
Seasonal variation
Source identification

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.atmosres.2019.05.020

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@article{9baf3e81117848068caa42c59fbda376,

title = "Chemical characteristics of atmospheric carbonyl compounds and source identification of formaldehyde in Wuhan, Central China",

abstract = "The chemical characteristics of carbonyl compounds were investigated concurrently at urban (ZY) and suburban (JX) sites in Wuhan in 2017. Thirteen carbonyl compounds were quantified, with average total mixing ratios of 11.29 ± 3.85 ppbv at ZY and 8.72 ± 3.75 ppbv at JX. Formaldehyde (HCHO), acetaldehyde (CH3CHO) and acetone (CH3COCH3) were the three most abundant atmospheric carbonyl compounds, accounting for >85% of the total carbonyl compound mixing ratio at both sites. HCHO exhibited highest concentrations during summer and lowest concentrations during winter at ZY and JX. In contrast, CH3CHO and CH3COCH3 showed an opposite seasonal trend, suggesting that HCHO may be mainly generated by photochemical reactions in summer, while CH3CHO and CH3COCH3 might be originate from primary emissions in winter. Diurnal variations were assessed, with HCHO exhibiting peak values at midnight in all seasons, with levels associated with diesel-fuel vehicle emissions. High ratios of C1/C2 and C2/C3 were observed in summer at ZY and JX, suggesting biogenic sources significantly contribute to carbonyl compound formation. Furthermore, linear regression analysis showed a high HCHO contribution from primary sources in winter (73.5% at ZY, 58.6% at JX) and secondary sources in summer (67.2% at ZY, 47.4% at JX). The results of this study will help formulate effective emission control strategies for carbonyl pollution in Wuhan.",

keywords = "Carbonyls compounds, Diurnal variation, Seasonal variation, Source identification",

author = "Z. Yang and Cheng, {H. R.} and Wang, {Z. W.} and J. Peng and Zhu, {J. X.} and Lyu, {X. P.} and Hai Guo",

note = "Funding Information: This study was supported by the National Key R&D Program of China (No: 2016YFC0200905 , 2017YFC0212603 ), Wuhan Youth Science and Technology Program (No: 2017050304010310 ), Natural Science Foundation of China (NSFC) (No: 41673102 ), and the Shenzhen Basic Research Project, China (No: JCYJ20150630153917252 ). Funding Information: This study was supported by the National Key R&D Program of China (No:2016YFC0200905, 2017YFC0212603), Wuhan Youth Science and Technology Program (No: 2017050304010310), Natural Science Foundation of China (NSFC)(No:41673102), and the Shenzhen Basic Research Project, China (No: JCYJ20150630153917252). Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = nov,

doi = "10.1016/j.atmosres.2019.05.020",

language = "English",

volume = "228",

pages = "95--106",

journal = "Atmospheric Research",

issn = "0169-8095",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Chemical characteristics of atmospheric carbonyl compounds and source identification of formaldehyde in Wuhan, Central China

AU - Yang, Z.

AU - Cheng, H. R.

AU - Wang, Z. W.

AU - Peng, J.

AU - Zhu, J. X.

AU - Lyu, X. P.

AU - Guo, Hai

N1 - Funding Information: This study was supported by the National Key R&D Program of China (No: 2016YFC0200905 , 2017YFC0212603 ), Wuhan Youth Science and Technology Program (No: 2017050304010310 ), Natural Science Foundation of China (NSFC) (No: 41673102 ), and the Shenzhen Basic Research Project, China (No: JCYJ20150630153917252 ). Funding Information: This study was supported by the National Key R&D Program of China (No:2016YFC0200905, 2017YFC0212603), Wuhan Youth Science and Technology Program (No: 2017050304010310), Natural Science Foundation of China (NSFC)(No:41673102), and the Shenzhen Basic Research Project, China (No: JCYJ20150630153917252). Publisher Copyright: © 2019

PY - 2019/11

Y1 - 2019/11

N2 - The chemical characteristics of carbonyl compounds were investigated concurrently at urban (ZY) and suburban (JX) sites in Wuhan in 2017. Thirteen carbonyl compounds were quantified, with average total mixing ratios of 11.29 ± 3.85 ppbv at ZY and 8.72 ± 3.75 ppbv at JX. Formaldehyde (HCHO), acetaldehyde (CH3CHO) and acetone (CH3COCH3) were the three most abundant atmospheric carbonyl compounds, accounting for >85% of the total carbonyl compound mixing ratio at both sites. HCHO exhibited highest concentrations during summer and lowest concentrations during winter at ZY and JX. In contrast, CH3CHO and CH3COCH3 showed an opposite seasonal trend, suggesting that HCHO may be mainly generated by photochemical reactions in summer, while CH3CHO and CH3COCH3 might be originate from primary emissions in winter. Diurnal variations were assessed, with HCHO exhibiting peak values at midnight in all seasons, with levels associated with diesel-fuel vehicle emissions. High ratios of C1/C2 and C2/C3 were observed in summer at ZY and JX, suggesting biogenic sources significantly contribute to carbonyl compound formation. Furthermore, linear regression analysis showed a high HCHO contribution from primary sources in winter (73.5% at ZY, 58.6% at JX) and secondary sources in summer (67.2% at ZY, 47.4% at JX). The results of this study will help formulate effective emission control strategies for carbonyl pollution in Wuhan.

AB - The chemical characteristics of carbonyl compounds were investigated concurrently at urban (ZY) and suburban (JX) sites in Wuhan in 2017. Thirteen carbonyl compounds were quantified, with average total mixing ratios of 11.29 ± 3.85 ppbv at ZY and 8.72 ± 3.75 ppbv at JX. Formaldehyde (HCHO), acetaldehyde (CH3CHO) and acetone (CH3COCH3) were the three most abundant atmospheric carbonyl compounds, accounting for >85% of the total carbonyl compound mixing ratio at both sites. HCHO exhibited highest concentrations during summer and lowest concentrations during winter at ZY and JX. In contrast, CH3CHO and CH3COCH3 showed an opposite seasonal trend, suggesting that HCHO may be mainly generated by photochemical reactions in summer, while CH3CHO and CH3COCH3 might be originate from primary emissions in winter. Diurnal variations were assessed, with HCHO exhibiting peak values at midnight in all seasons, with levels associated with diesel-fuel vehicle emissions. High ratios of C1/C2 and C2/C3 were observed in summer at ZY and JX, suggesting biogenic sources significantly contribute to carbonyl compound formation. Furthermore, linear regression analysis showed a high HCHO contribution from primary sources in winter (73.5% at ZY, 58.6% at JX) and secondary sources in summer (67.2% at ZY, 47.4% at JX). The results of this study will help formulate effective emission control strategies for carbonyl pollution in Wuhan.

KW - Carbonyls compounds

KW - Diurnal variation

KW - Seasonal variation

KW - Source identification

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U2 - 10.1016/j.atmosres.2019.05.020

DO - 10.1016/j.atmosres.2019.05.020

M3 - Journal article

AN - SCOPUS:85066460537

SN - 0169-8095

VL - 228

SP - 95

EP - 106

JO - Atmospheric Research

JF - Atmospheric Research

ER -

Chemical characteristics of atmospheric carbonyl compounds and source identification of formaldehyde in Wuhan, Central China

Abstract

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UN SDGs

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