Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira
Leaves can specifically uptake trace elements from the surrounding environment. And tree leaves are a good biological indicator for air pollution. Therefore, chemical analysis of leaf specifications can be used to reproduce a historical record of air pollution. To better understand the history of ur...
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| Veröffentlicht in: | Environmental pollution (1987) 2024-03, Vol.345, p.123290-123290, Article 123290 |
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| container_title | Environmental pollution (1987) |
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| creator | Wang, Aixia Guo, Yanan Bai, Zhuhui Fang, Yanming |
| description | Leaves can specifically uptake trace elements from the surrounding environment. And tree leaves are a good biological indicator for air pollution. Therefore, chemical analysis of leaf specifications can be used to reproduce a historical record of air pollution. To better understand the history of urban air pollution from the 1920s to the 2020s in Nanjing, China, leaf samples of two woody plants, Platanus × hispanica and Pittosporum tobira, were collected in this study as environmental indicators from different historical periods. These included historical herbarium specimens and current leaves from live trees. The concentrations of 10 trace elements were determined in the samples using ICP‒MS. Pollution indices were calculated, yielding the key findings. The historical leaf samples showed continuously increasing mean concentrations of the 10 trace elements over time, which significantly correlating with automobile quantities and the number of large-scale industrial enterprises (p |
| doi_str_mv | 10.1016/j.envpol.2024.123290 |
| format | Article |
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[Display omitted]
•Cd, Cr, Cu, Ni, Pb, Zn, V, Sb, Fe, and Al increased from the 1920s–2020s.•Urban expansion trends align with spatial trace element patterns in leaf specimens.•Trace elements in leaves correlate significantly with industry and transportation.</description><identifier>ISSN: 0269-7491</identifier><identifier>EISSN: 1873-6424</identifier><identifier>DOI: 10.1016/j.envpol.2024.123290</identifier><identifier>PMID: 38176641</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Air pollution ; Historical changes ; In situ leaf specimens ; Spatial distribution ; Trace elements ; Tree species</subject><ispartof>Environmental pollution (1987), 2024-03, Vol.345, p.123290-123290, Article 123290</ispartof><rights>2024</rights><rights>Copyright © 2024. Published by Elsevier Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c226t-6c45381c04bcb7d7584f9a9e00051a201f70f4a46b9ef220824dcd106d6740d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.envpol.2024.123290$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38176641$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Aixia</creatorcontrib><creatorcontrib>Guo, Yanan</creatorcontrib><creatorcontrib>Bai, Zhuhui</creatorcontrib><creatorcontrib>Fang, Yanming</creatorcontrib><title>Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira</title><title>Environmental pollution (1987)</title><addtitle>Environ Pollut</addtitle><description>Leaves can specifically uptake trace elements from the surrounding environment. And tree leaves are a good biological indicator for air pollution. Therefore, chemical analysis of leaf specifications can be used to reproduce a historical record of air pollution. To better understand the history of urban air pollution from the 1920s to the 2020s in Nanjing, China, leaf samples of two woody plants, Platanus × hispanica and Pittosporum tobira, were collected in this study as environmental indicators from different historical periods. These included historical herbarium specimens and current leaves from live trees. The concentrations of 10 trace elements were determined in the samples using ICP‒MS. Pollution indices were calculated, yielding the key findings. The historical leaf samples showed continuously increasing mean concentrations of the 10 trace elements over time, which significantly correlating with automobile quantities and the number of large-scale industrial enterprises (p < 0.05). Moreover, modern leaf trace element concentrations were significantly correlated with PM10, PM2.5, automobiles, large-scale industrial enterprises, and atmospheric factors, confirming these as sources. In addition to the historical growth trend, spatial heterogeneity was revealed in historical Platanus × hispanica leaf samples from the 14 sites in Nanjing. Changes in heavy metal trace element pollution distributions were consistent with transportation and industrial expansion, with homologous patterns across elements. Specifically, post 1980s increases were observed in the representative NJ2 (Zhongshan Botanical Garden) and the NJ5(Nanjing University) sites, with higher concentrations occurring at in the NJ5 contaminated site than at the NJ2 uncontaminated site. After 2009, the 10 element (except Cd) pollution indices in Platanus × hispanica leaves fluctuated but declined overall. This reconstruction of Nanjing's air pollution history demonstrates that ample environmental information can be extracted from plant leaf markers over time and space.
[Display omitted]
•Cd, Cr, Cu, Ni, Pb, Zn, V, Sb, Fe, and Al increased from the 1920s–2020s.•Urban expansion trends align with spatial trace element patterns in leaf specimens.•Trace elements in leaves correlate significantly with industry and transportation.</description><subject>Air pollution</subject><subject>Historical changes</subject><subject>In situ leaf specimens</subject><subject>Spatial distribution</subject><subject>Trace elements</subject><subject>Tree species</subject><issn>0269-7491</issn><issn>1873-6424</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kU1u1TAUhS0Eoo_CDhDykEHzsB0_O5kgoSf-pAoq1Lnl2DfUT4kd_FOpK2EBLIWN4TSFISPr-n73HB0dhF5SsqeEijenPfjbJUx7RhjfU9aynjxCO9rJthGc8cdoR5joG8l7eoaepXQihPC2bZ-is7ajUghOd-jXNzDBpxyLyS54HEassQGfS7y7H1zE1WQq99sbl3KoC-fxF-1Pzn-_wMcb5_UFLqlOOEdtAMMEc5VIK5dcLngCPeK0gHH1P626V5PO2peEf_9cVRftndFYe4uvXM4hLSGWGecwuKifoyejnhK8eHjP0fWH99fHT83l14-fj-8uG8OYyI0w_FCDGcIHM0grDx0fe91DjX2gmhE6SjJyzcXQw8gY6Ri3xlIirJCc2PYcvd5klxh-FEhZzS4ZmCbtIZSkWM_IQRLZiYryDTUxpBRhVEt0s453ihK1tqNOamtHre2orZ169urBoQwz2H9Hf-uowNsNgBrz1kFUyTjwBqyLYLKywf3f4Q8waKXP</recordid><startdate>20240315</startdate><enddate>20240315</enddate><creator>Wang, Aixia</creator><creator>Guo, Yanan</creator><creator>Bai, Zhuhui</creator><creator>Fang, Yanming</creator><general>Elsevier Ltd</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20240315</creationdate><title>Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira</title><author>Wang, Aixia ; Guo, Yanan ; Bai, Zhuhui ; Fang, Yanming</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c226t-6c45381c04bcb7d7584f9a9e00051a201f70f4a46b9ef220824dcd106d6740d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Air pollution</topic><topic>Historical changes</topic><topic>In situ leaf specimens</topic><topic>Spatial distribution</topic><topic>Trace elements</topic><topic>Tree species</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Aixia</creatorcontrib><creatorcontrib>Guo, Yanan</creatorcontrib><creatorcontrib>Bai, Zhuhui</creatorcontrib><creatorcontrib>Fang, Yanming</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental pollution (1987)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Aixia</au><au>Guo, Yanan</au><au>Bai, Zhuhui</au><au>Fang, Yanming</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira</atitle><jtitle>Environmental pollution (1987)</jtitle><addtitle>Environ Pollut</addtitle><date>2024-03-15</date><risdate>2024</risdate><volume>345</volume><spage>123290</spage><epage>123290</epage><pages>123290-123290</pages><artnum>123290</artnum><issn>0269-7491</issn><eissn>1873-6424</eissn><abstract>Leaves can specifically uptake trace elements from the surrounding environment. And tree leaves are a good biological indicator for air pollution. Therefore, chemical analysis of leaf specifications can be used to reproduce a historical record of air pollution. To better understand the history of urban air pollution from the 1920s to the 2020s in Nanjing, China, leaf samples of two woody plants, Platanus × hispanica and Pittosporum tobira, were collected in this study as environmental indicators from different historical periods. These included historical herbarium specimens and current leaves from live trees. The concentrations of 10 trace elements were determined in the samples using ICP‒MS. Pollution indices were calculated, yielding the key findings. The historical leaf samples showed continuously increasing mean concentrations of the 10 trace elements over time, which significantly correlating with automobile quantities and the number of large-scale industrial enterprises (p < 0.05). Moreover, modern leaf trace element concentrations were significantly correlated with PM10, PM2.5, automobiles, large-scale industrial enterprises, and atmospheric factors, confirming these as sources. In addition to the historical growth trend, spatial heterogeneity was revealed in historical Platanus × hispanica leaf samples from the 14 sites in Nanjing. Changes in heavy metal trace element pollution distributions were consistent with transportation and industrial expansion, with homologous patterns across elements. Specifically, post 1980s increases were observed in the representative NJ2 (Zhongshan Botanical Garden) and the NJ5(Nanjing University) sites, with higher concentrations occurring at in the NJ5 contaminated site than at the NJ2 uncontaminated site. After 2009, the 10 element (except Cd) pollution indices in Platanus × hispanica leaves fluctuated but declined overall. This reconstruction of Nanjing's air pollution history demonstrates that ample environmental information can be extracted from plant leaf markers over time and space.
[Display omitted]
•Cd, Cr, Cu, Ni, Pb, Zn, V, Sb, Fe, and Al increased from the 1920s–2020s.•Urban expansion trends align with spatial trace element patterns in leaf specimens.•Trace elements in leaves correlate significantly with industry and transportation.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>38176641</pmid><doi>10.1016/j.envpol.2024.123290</doi><tpages>1</tpages></addata></record> |
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| subjects | Air pollution Historical changes In situ leaf specimens Spatial distribution Trace elements Tree species |
| title | Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira |
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