Leaching effect of water on photodegraded hardwood species monitored by IR spectroscopy
Black locust ( Robinia pseudoacacia L.), beech ( Fagus sylvatica L.), aspen ( Populus tremula L.) and sessile oak ( Quercus petraea Liebl.) hardwood samples were irradiated by a strong ultraviolet (UV) emitter mercury lamp at 50 °C. Other series of specimens were exposed to a combined treatment of U...
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| Veröffentlicht in: | Wood science and technology 2020-11, Vol.54 (6), p.1407-1421 |
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| creator | Varga, Denes Tolvaj, Laszlo Molnar, Zsolt Pasztory, Zoltan |
| description | Black locust (
Robinia pseudoacacia
L.), beech (
Fagus sylvatica
L.), aspen (
Populus tremula
L.) and sessile oak (
Quercus petraea
Liebl.) hardwood samples were irradiated by a strong ultraviolet (UV) emitter mercury lamp at 50 °C. Other series of specimens were exposed to a combined treatment of UV irradiation and water leaching. Ratio of UV radiation and water leaching time was 2:1. While the total duration of UV radiation was 20 days for both test series that of water leaching was 10 days. IR measurement was taken after both UV radiation and water leaching to monitor both effects separately. Lignin degradation proved to be more intensive in leached samples than in purely UV-irradiated samples. Guaiacyl and syringyl lignin showed similar degradation properties. Unconjugated carbonyl groups generated by the photodegradation were the most sensitive chemical components to leaching. Photodegradation generated two absorption bands of unconjugated carbonyl groups at around 1710 and 1760 cm
−1
wavenumbers. The band at 1760 cm
−1
was much more sensitive to water leaching than the band at 1710 cm
−1
. Three to ten days of water leaching was enough to remove all unconjugated carbonyls generated by the photodegradation, depending on the species. Sessile oak was the most sensitive species to water leaching, whereas black locust proved to be the most stable against both photodegradation and water leaching. Water was able to leach out unconjugated carbonyl groups (absorbing at 1745 cm
−1
) originally present in all investigated wood species. |
| doi_str_mv | 10.1007/s00226-020-01204-2 |
| format | Article |
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Robinia pseudoacacia
L.), beech (
Fagus sylvatica
L.), aspen (
Populus tremula
L.) and sessile oak (
Quercus petraea
Liebl.) hardwood samples were irradiated by a strong ultraviolet (UV) emitter mercury lamp at 50 °C. Other series of specimens were exposed to a combined treatment of UV irradiation and water leaching. Ratio of UV radiation and water leaching time was 2:1. While the total duration of UV radiation was 20 days for both test series that of water leaching was 10 days. IR measurement was taken after both UV radiation and water leaching to monitor both effects separately. Lignin degradation proved to be more intensive in leached samples than in purely UV-irradiated samples. Guaiacyl and syringyl lignin showed similar degradation properties. Unconjugated carbonyl groups generated by the photodegradation were the most sensitive chemical components to leaching. Photodegradation generated two absorption bands of unconjugated carbonyl groups at around 1710 and 1760 cm
−1
wavenumbers. The band at 1760 cm
−1
was much more sensitive to water leaching than the band at 1710 cm
−1
. Three to ten days of water leaching was enough to remove all unconjugated carbonyls generated by the photodegradation, depending on the species. Sessile oak was the most sensitive species to water leaching, whereas black locust proved to be the most stable against both photodegradation and water leaching. Water was able to leach out unconjugated carbonyl groups (absorbing at 1745 cm
−1
) originally present in all investigated wood species.</description><identifier>ISSN: 0043-7719</identifier><identifier>EISSN: 1432-5225</identifier><identifier>DOI: 10.1007/s00226-020-01204-2</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Absorption spectra ; Beech ; Biomedical and Life Sciences ; Carbonyl compounds ; Carbonyl groups ; Carbonyls ; Ceramics ; Combined treatment ; Composites ; Emitters ; Glass ; Hardwoods ; Infrared spectroscopy ; Irradiation ; Leaching ; Life Sciences ; Lignin ; Machines ; Manufacturing ; Mercury ; Mercury lamps ; Natural Materials ; Original ; Photodegradation ; Processes ; Robinia pseudoacacia ; Species ; Ultraviolet radiation ; Wood Science & Technology</subject><ispartof>Wood science and technology, 2020-11, Vol.54 (6), p.1407-1421</ispartof><rights>The Author(s) 2020</rights><rights>The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c400t-ba1d48dfabf747ee46ff0b4b06d2ec3241ab40631a8e120cffdeddcf740d3dc13</citedby><cites>FETCH-LOGICAL-c400t-ba1d48dfabf747ee46ff0b4b06d2ec3241ab40631a8e120cffdeddcf740d3dc13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00226-020-01204-2$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00226-020-01204-2$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Varga, Denes</creatorcontrib><creatorcontrib>Tolvaj, Laszlo</creatorcontrib><creatorcontrib>Molnar, Zsolt</creatorcontrib><creatorcontrib>Pasztory, Zoltan</creatorcontrib><title>Leaching effect of water on photodegraded hardwood species monitored by IR spectroscopy</title><title>Wood science and technology</title><addtitle>Wood Sci Technol</addtitle><description>Black locust (
Robinia pseudoacacia
L.), beech (
Fagus sylvatica
L.), aspen (
Populus tremula
L.) and sessile oak (
Quercus petraea
Liebl.) hardwood samples were irradiated by a strong ultraviolet (UV) emitter mercury lamp at 50 °C. Other series of specimens were exposed to a combined treatment of UV irradiation and water leaching. Ratio of UV radiation and water leaching time was 2:1. While the total duration of UV radiation was 20 days for both test series that of water leaching was 10 days. IR measurement was taken after both UV radiation and water leaching to monitor both effects separately. Lignin degradation proved to be more intensive in leached samples than in purely UV-irradiated samples. Guaiacyl and syringyl lignin showed similar degradation properties. Unconjugated carbonyl groups generated by the photodegradation were the most sensitive chemical components to leaching. Photodegradation generated two absorption bands of unconjugated carbonyl groups at around 1710 and 1760 cm
−1
wavenumbers. The band at 1760 cm
−1
was much more sensitive to water leaching than the band at 1710 cm
−1
. Three to ten days of water leaching was enough to remove all unconjugated carbonyls generated by the photodegradation, depending on the species. Sessile oak was the most sensitive species to water leaching, whereas black locust proved to be the most stable against both photodegradation and water leaching. Water was able to leach out unconjugated carbonyl groups (absorbing at 1745 cm
−1
) originally present in all investigated wood species.</description><subject>Absorption spectra</subject><subject>Beech</subject><subject>Biomedical and Life Sciences</subject><subject>Carbonyl compounds</subject><subject>Carbonyl groups</subject><subject>Carbonyls</subject><subject>Ceramics</subject><subject>Combined treatment</subject><subject>Composites</subject><subject>Emitters</subject><subject>Glass</subject><subject>Hardwoods</subject><subject>Infrared spectroscopy</subject><subject>Irradiation</subject><subject>Leaching</subject><subject>Life Sciences</subject><subject>Lignin</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Mercury</subject><subject>Mercury lamps</subject><subject>Natural Materials</subject><subject>Original</subject><subject>Photodegradation</subject><subject>Processes</subject><subject>Robinia pseudoacacia</subject><subject>Species</subject><subject>Ultraviolet radiation</subject><subject>Wood Science & Technology</subject><issn>0043-7719</issn><issn>1432-5225</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kE9LAzEQxYMoWKtfwFPAc3SSTTfrUYp_CguCKB5DNpm0W-xmTbaUfnvTruDN08DM7828eYRcc7jlAOouAQhRMhDAgAuQTJyQCZeFYDMhZqdkAiALphS_PycXKa0BuFKympDPGo1dtd2SovdoBxo83ZkBIw0d7VdhCA6X0Th0dGWi24XgaOrRtpjoJnTtEGIeNXu6eDv2hxiSDf3-kpx585Xw6rdOycfT4_v8hdWvz4v5Q82sBBhYY7iTlfOm8UoqRFl6D41soHQCbSEkN42EsuCmwvyX9T47cTbD4ApneTElN-PePobvLaZBr8M2dvmkFlLxipflTGRKjJTN9lJEr_vYbkzcaw76EKAeA9Q5QH0MUB9ExShKGe6WGP9W_6P6AejPdQQ</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Varga, Denes</creator><creator>Tolvaj, Laszlo</creator><creator>Molnar, Zsolt</creator><creator>Pasztory, Zoltan</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope></search><sort><creationdate>20201101</creationdate><title>Leaching effect of water on photodegraded hardwood species monitored by IR spectroscopy</title><author>Varga, Denes ; Tolvaj, Laszlo ; Molnar, Zsolt ; Pasztory, Zoltan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-ba1d48dfabf747ee46ff0b4b06d2ec3241ab40631a8e120cffdeddcf740d3dc13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Absorption spectra</topic><topic>Beech</topic><topic>Biomedical and Life Sciences</topic><topic>Carbonyl compounds</topic><topic>Carbonyl groups</topic><topic>Carbonyls</topic><topic>Ceramics</topic><topic>Combined treatment</topic><topic>Composites</topic><topic>Emitters</topic><topic>Glass</topic><topic>Hardwoods</topic><topic>Infrared spectroscopy</topic><topic>Irradiation</topic><topic>Leaching</topic><topic>Life Sciences</topic><topic>Lignin</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Mercury</topic><topic>Mercury lamps</topic><topic>Natural Materials</topic><topic>Original</topic><topic>Photodegradation</topic><topic>Processes</topic><topic>Robinia pseudoacacia</topic><topic>Species</topic><topic>Ultraviolet radiation</topic><topic>Wood Science & Technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Varga, Denes</creatorcontrib><creatorcontrib>Tolvaj, Laszlo</creatorcontrib><creatorcontrib>Molnar, Zsolt</creatorcontrib><creatorcontrib>Pasztory, Zoltan</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Environmental Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><jtitle>Wood science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Varga, Denes</au><au>Tolvaj, Laszlo</au><au>Molnar, Zsolt</au><au>Pasztory, Zoltan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Leaching effect of water on photodegraded hardwood species monitored by IR spectroscopy</atitle><jtitle>Wood science and technology</jtitle><stitle>Wood Sci Technol</stitle><date>2020-11-01</date><risdate>2020</risdate><volume>54</volume><issue>6</issue><spage>1407</spage><epage>1421</epage><pages>1407-1421</pages><issn>0043-7719</issn><eissn>1432-5225</eissn><abstract>Black locust (
Robinia pseudoacacia
L.), beech (
Fagus sylvatica
L.), aspen (
Populus tremula
L.) and sessile oak (
Quercus petraea
Liebl.) hardwood samples were irradiated by a strong ultraviolet (UV) emitter mercury lamp at 50 °C. Other series of specimens were exposed to a combined treatment of UV irradiation and water leaching. Ratio of UV radiation and water leaching time was 2:1. While the total duration of UV radiation was 20 days for both test series that of water leaching was 10 days. IR measurement was taken after both UV radiation and water leaching to monitor both effects separately. Lignin degradation proved to be more intensive in leached samples than in purely UV-irradiated samples. Guaiacyl and syringyl lignin showed similar degradation properties. Unconjugated carbonyl groups generated by the photodegradation were the most sensitive chemical components to leaching. Photodegradation generated two absorption bands of unconjugated carbonyl groups at around 1710 and 1760 cm
−1
wavenumbers. The band at 1760 cm
−1
was much more sensitive to water leaching than the band at 1710 cm
−1
. Three to ten days of water leaching was enough to remove all unconjugated carbonyls generated by the photodegradation, depending on the species. Sessile oak was the most sensitive species to water leaching, whereas black locust proved to be the most stable against both photodegradation and water leaching. Water was able to leach out unconjugated carbonyl groups (absorbing at 1745 cm
−1
) originally present in all investigated wood species.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00226-020-01204-2</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Absorption spectra Beech Biomedical and Life Sciences Carbonyl compounds Carbonyl groups Carbonyls Ceramics Combined treatment Composites Emitters Glass Hardwoods Infrared spectroscopy Irradiation Leaching Life Sciences Lignin Machines Manufacturing Mercury Mercury lamps Natural Materials Original Photodegradation Processes Robinia pseudoacacia Species Ultraviolet radiation Wood Science & Technology |
| title | Leaching effect of water on photodegraded hardwood species monitored by IR spectroscopy |
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