Influence of Chinese New Year overlapping COVID-19 lockdown on HONO sources in Shijiazhuang.
Identifieur interne : 001E71 ( Main/Corpus ); précédent : 001E70; suivant : 001E72Influence of Chinese New Year overlapping COVID-19 lockdown on HONO sources in Shijiazhuang.
Auteurs : Yongchun Liu ; Shuangying Ni ; Tao Jiang ; Shubin Xing ; Yusheng Zhang ; Xiaolei Bao ; Zeming Feng ; Xiaolong Fan ; Liang Zhang ; Haibo FengSource :
- The Science of the total environment [ 1879-1026 ] ; 2020.
English descriptors
- KwdEn :
- MESH :
- chemical : Hydroxyl Radical, Nitrous Acid.
- analysis : Air Pollution.
- Anniversaries and Special Events, Atmosphere, Betacoronavirus, COVID-19, Coronavirus Infections, Pandemics, Pneumonia, Viral, SARS-CoV-2.
Abstract
Nitrous acid (HONO) is an important precursor of hydroxyl radical (OH) in the atmosphere. It is also toxic to human health. In this work, HONO concentrations were measured in Shijiazhuang using a Monitor for AeRosols and Gases in ambient Air (MARGA) from December 15, 2019 to March 15, 2020, which covered the heavy air pollution season, the Chinese New Year (CNY) vocation and the Corona Virus Disease-19 (COVID-19) lockdown period. During & after CNY overlapping COVID-19 lockdown, the air quality was significantly improved because of both the emission reduction and the increase in diffusion ability of air masses. The mean HONO concentration was 2.43 ± 1.08 ppbv before CNY, while it decreased to 1.53 ± 1.16 ppbv during CNY and 0.97 ± 0.76 ppbv after CNY. The lockdown during & after CNY reduced ~31% of ambient HONO along with ~62% of NO and ~36% of NO2 compared with those before CNY after the improvement of diffusion ability had been taken into consideration. Heterogeneous reaction of NO2 on ground surface dominated the nocturnal HONO sources, followed by heterogeneous reaction on aerosol surface, vehicle emission, reaction between NO and OH and emission from soil on pollution days throughout the observation. Except for elevated soil emission, other nighttime HONO sources and sinks decreased significantly during & after CNY. The relative importance of heterogeneous reaction of NO2 on surfaces further increased because of both the decrease in vehicle emission and the increase in the heterogeneous conversion kinetics from NO2 to HONO during & after CNY.
DOI: 10.1016/j.scitotenv.2020.141025
PubMed: 32738691
PubMed Central: PMC7371585
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Electronic address: liuyc@buct.edu.cn.</nlm:affiliation></affiliation></author><author><name sortKey="Ni, Shuangying" sort="Ni, Shuangying" uniqKey="Ni S" first="Shuangying" last="Ni">Shuangying Ni</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Jiang, Tao" sort="Jiang, Tao" uniqKey="Jiang T" first="Tao" last="Jiang">Tao Jiang</name><affiliation><nlm:affiliation>Hebei Provincial Meteorological Technical Equipment Center, Shijiazhuang 050021, China.</nlm:affiliation></affiliation></author><author><name sortKey="Xing, Shubin" sort="Xing, Shubin" uniqKey="Xing S" first="Shubin" last="Xing">Shubin Xing</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Yusheng" sort="Zhang, Yusheng" uniqKey="Zhang Y" first="Yusheng" last="Zhang">Yusheng Zhang</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Bao, Xiaolei" sort="Bao, Xiaolei" uniqKey="Bao X" first="Xiaolei" last="Bao">Xiaolei Bao</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China. Electronic address: bxl5@163.com.</nlm:affiliation></affiliation></author><author><name sortKey="Feng, Zeming" sort="Feng, Zeming" uniqKey="Feng Z" first="Zeming" last="Feng">Zeming Feng</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Fan, Xiaolong" sort="Fan, Xiaolong" uniqKey="Fan X" first="Xiaolong" last="Fan">Xiaolong Fan</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Liang" sort="Zhang, Liang" uniqKey="Zhang L" first="Liang" last="Zhang">Liang Zhang</name><affiliation><nlm:affiliation>Hebei Province Environmental Emergency and Heavy Pollution Weather Forewarning Center, 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Feng, Haibo" sort="Feng, Haibo" uniqKey="Feng H" first="Haibo" last="Feng">Haibo Feng</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2020">2020</date><idno type="RBID">pubmed:32738691</idno><idno type="pmid">32738691</idno><idno type="doi">10.1016/j.scitotenv.2020.141025</idno><idno type="pmc">PMC7371585</idno><idno type="wicri:Area/Main/Corpus">001E71</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001E71</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Influence of Chinese New Year overlapping COVID-19 lockdown on HONO sources in Shijiazhuang.</title><author><name sortKey="Liu, Yongchun" sort="Liu, Yongchun" uniqKey="Liu Y" first="Yongchun" last="Liu">Yongchun Liu</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: liuyc@buct.edu.cn.</nlm:affiliation></affiliation></author><author><name sortKey="Ni, Shuangying" sort="Ni, Shuangying" uniqKey="Ni S" first="Shuangying" last="Ni">Shuangying Ni</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Jiang, Tao" sort="Jiang, Tao" uniqKey="Jiang T" first="Tao" last="Jiang">Tao Jiang</name><affiliation><nlm:affiliation>Hebei Provincial Meteorological Technical Equipment Center, Shijiazhuang 050021, China.</nlm:affiliation></affiliation></author><author><name sortKey="Xing, Shubin" sort="Xing, Shubin" uniqKey="Xing S" first="Shubin" last="Xing">Shubin Xing</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Yusheng" sort="Zhang, Yusheng" uniqKey="Zhang Y" first="Yusheng" last="Zhang">Yusheng Zhang</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Bao, Xiaolei" sort="Bao, Xiaolei" uniqKey="Bao X" first="Xiaolei" last="Bao">Xiaolei Bao</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China. Electronic address: bxl5@163.com.</nlm:affiliation></affiliation></author><author><name sortKey="Feng, Zeming" sort="Feng, Zeming" uniqKey="Feng Z" first="Zeming" last="Feng">Zeming Feng</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Fan, Xiaolong" sort="Fan, Xiaolong" uniqKey="Fan X" first="Xiaolong" last="Fan">Xiaolong Fan</name><affiliation><nlm:affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Liang" sort="Zhang, Liang" uniqKey="Zhang L" first="Liang" last="Zhang">Liang Zhang</name><affiliation><nlm:affiliation>Hebei Province Environmental Emergency and Heavy Pollution Weather Forewarning Center, 050037, China.</nlm:affiliation></affiliation></author><author><name sortKey="Feng, Haibo" sort="Feng, Haibo" uniqKey="Feng H" first="Haibo" last="Feng">Haibo Feng</name><affiliation><nlm:affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</nlm:affiliation></affiliation></author></analytic><series><title level="j">The Science of the total environment</title><idno type="eISSN">1879-1026</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Air Pollution (analysis)</term><term>Anniversaries and Special Events (MeSH)</term><term>Atmosphere (MeSH)</term><term>Betacoronavirus (MeSH)</term><term>COVID-19 (MeSH)</term><term>Coronavirus Infections (MeSH)</term><term>Hydroxyl Radical (MeSH)</term><term>Nitrous Acid (MeSH)</term><term>Pandemics (MeSH)</term><term>Pneumonia, Viral (MeSH)</term><term>SARS-CoV-2 (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Hydroxyl Radical</term><term>Nitrous Acid</term></keywords><keywords scheme="MESH" qualifier="analysis" xml:lang="en"><term>Air Pollution</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Anniversaries and Special Events</term><term>Atmosphere</term><term>Betacoronavirus</term><term>COVID-19</term><term>Coronavirus Infections</term><term>Pandemics</term><term>Pneumonia, Viral</term><term>SARS-CoV-2</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nitrous acid (HONO) is an important precursor of hydroxyl radical (OH) in the atmosphere. It is also toxic to human health. In this work, HONO concentrations were measured in Shijiazhuang using a Monitor for AeRosols and Gases in ambient Air (MARGA) from December 15, 2019 to March 15, 2020, which covered the heavy air pollution season, the Chinese New Year (CNY) vocation and the Corona Virus Disease-19 (COVID-19) lockdown period. During & after CNY overlapping COVID-19 lockdown, the air quality was significantly improved because of both the emission reduction and the increase in diffusion ability of air masses. The mean HONO concentration was 2.43 ± 1.08 ppbv before CNY, while it decreased to 1.53 ± 1.16 ppbv during CNY and 0.97 ± 0.76 ppbv after CNY. The lockdown during & after CNY reduced ~31% of ambient HONO along with ~62% of NO and ~36% of NO<sub>2</sub> compared with those before CNY after the improvement of diffusion ability had been taken into consideration. Heterogeneous reaction of NO<sub>2</sub> on ground surface dominated the nocturnal HONO sources, followed by heterogeneous reaction on aerosol surface, vehicle emission, reaction between NO and OH and emission from soil on pollution days throughout the observation. Except for elevated soil emission, other nighttime HONO sources and sinks decreased significantly during & after CNY. The relative importance of heterogeneous reaction of NO<sub>2</sub> on surfaces further increased because of both the decrease in vehicle emission and the increase in the heterogeneous conversion kinetics from NO<sub>2</sub> to HONO during & after CNY.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Automated" Owner="NLM"><PMID Version="1">32738691</PMID><DateCompleted><Year>2020</Year><Month>10</Month><Day>07</Day></DateCompleted><DateRevised><Year>2021</Year><Month>01</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-1026</ISSN><JournalIssue CitedMedium="Internet"><Volume>745</Volume><PubDate><Year>2020</Year><Month>Nov</Month><Day>25</Day></PubDate></JournalIssue><Title>The Science of the total environment</Title><ISOAbbreviation>Sci Total Environ</ISOAbbreviation></Journal><ArticleTitle>Influence of Chinese New Year overlapping COVID-19 lockdown on HONO sources in Shijiazhuang.</ArticleTitle><Pagination><MedlinePgn>141025</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0048-9697(20)34554-X</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.scitotenv.2020.141025</ELocationID><Abstract><AbstractText>Nitrous acid (HONO) is an important precursor of hydroxyl radical (OH) in the atmosphere. It is also toxic to human health. In this work, HONO concentrations were measured in Shijiazhuang using a Monitor for AeRosols and Gases in ambient Air (MARGA) from December 15, 2019 to March 15, 2020, which covered the heavy air pollution season, the Chinese New Year (CNY) vocation and the Corona Virus Disease-19 (COVID-19) lockdown period. During & after CNY overlapping COVID-19 lockdown, the air quality was significantly improved because of both the emission reduction and the increase in diffusion ability of air masses. The mean HONO concentration was 2.43 ± 1.08 ppbv before CNY, while it decreased to 1.53 ± 1.16 ppbv during CNY and 0.97 ± 0.76 ppbv after CNY. The lockdown during & after CNY reduced ~31% of ambient HONO along with ~62% of NO and ~36% of NO<sub>2</sub> compared with those before CNY after the improvement of diffusion ability had been taken into consideration. Heterogeneous reaction of NO<sub>2</sub> on ground surface dominated the nocturnal HONO sources, followed by heterogeneous reaction on aerosol surface, vehicle emission, reaction between NO and OH and emission from soil on pollution days throughout the observation. Except for elevated soil emission, other nighttime HONO sources and sinks decreased significantly during & after CNY. The relative importance of heterogeneous reaction of NO<sub>2</sub> on surfaces further increased because of both the decrease in vehicle emission and the increase in the heterogeneous conversion kinetics from NO<sub>2</sub> to HONO during & after CNY.</AbstractText><CopyrightInformation>Copyright © 2020 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>Yongchun</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: liuyc@buct.edu.cn.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ni</LastName><ForeName>Shuangying</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jiang</LastName><ForeName>Tao</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>Hebei Provincial Meteorological Technical Equipment Center, Shijiazhuang 050021, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Xing</LastName><ForeName>Shubin</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Yusheng</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bao</LastName><ForeName>Xiaolei</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China. Electronic address: bxl5@163.com.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feng</LastName><ForeName>Zeming</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fan</LastName><ForeName>Xiaolong</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Liang</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Hebei Province Environmental Emergency and Heavy Pollution Weather Forewarning Center, 050037, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feng</LastName><ForeName>Haibo</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Hebei Provincial Academy of Environmental Sciences, Shijiazhuang 050037, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>07</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Sci Total Environ</MedlineTA><NlmUniqueID>0330500</NlmUniqueID><ISSNLinking>0048-9697</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>3352-57-6</RegistryNumber><NameOfSubstance UI="D017665">Hydroxyl Radical</NameOfSubstance></Chemical><Chemical><RegistryNumber>T2I5UM75DN</RegistryNumber><NameOfSubstance UI="D009608">Nitrous Acid</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000397" MajorTopicYN="Y">Air Pollution</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D000846" MajorTopicYN="N">Anniversaries and Special Events</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001272" MajorTopicYN="N">Atmosphere</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000073640" MajorTopicYN="N">Betacoronavirus</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000086382" MajorTopicYN="N">COVID-19</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018352" MajorTopicYN="Y">Coronavirus Infections</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017665" MajorTopicYN="N">Hydroxyl Radical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009608" MajorTopicYN="Y">Nitrous Acid</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D058873" MajorTopicYN="Y">Pandemics</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011024" MajorTopicYN="Y">Pneumonia, Viral</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000086402" MajorTopicYN="N">SARS-CoV-2</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Anthropogenic activities</Keyword><Keyword MajorTopicYN="N">COVID-19</Keyword><Keyword MajorTopicYN="N">Concentrations and sources</Keyword><Keyword MajorTopicYN="N">Heterogeneous conversion</Keyword><Keyword MajorTopicYN="N">Nitrous acid</Keyword></KeywordList><CoiStatement>Declaration of competing interest The authors declare that they have no conflict of interest.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>06</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2020</Year><Month>07</Month><Day>13</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>07</Month><Day>15</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>8</Month><Day>2</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>10</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>8</Month><Day>2</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32738691</ArticleId><ArticleId IdType="pii">S0048-9697(20)34554-X</ArticleId><ArticleId IdType="doi">10.1016/j.scitotenv.2020.141025</ArticleId><ArticleId IdType="pmc">PMC7371585</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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