Synthesis, characterization, and application of modified silica in the removal and preconcentration of lead ions from natural river water
This paper describes the synthesis, modification, and application of modified silica for the removal of lead ions from aqueous medium. The modification reaction provided a reduction in surface are from 737 to 399 m 2 g −1 , which was attributed to the 4-amine-2-mercaptopyrimidine molecule attachmen...
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| Veröffentlicht in: | Clean technologies and environmental policy 2011-04, Vol.13 (2), p.397-402 |
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| creator | Ferreira, Guilherme Caetano, Laercio Castro, Renata S. D. Padilha, Pedro Magalhães Castro, Gustavo Rocha |
| description | This paper describes the synthesis, modification, and application of modified silica for the removal of lead ions from aqueous medium. The modification reaction provided a reduction in surface are from 737 to 399 m
2
g
−1
, which was attributed to the 4-amine-2-mercaptopyrimidine molecule attachment onto its surface. The characterization through FTIR spectra demonstrated bands at 3347 cm
−1
assigned to N–H stretching vibrations and the absence of thiol bands at 2600 e 2547 cm
−1
at Si-mod spectrum is an indicative that the attachment occurred via SH groups. The linearization of adsorption isotherm data through the modified Langmuir equation resulted in a maximum adsorption capacity of 2.9 μmol g
−1
. The material was applied in a continuous flow system in the preconcentration of water samples from Paraná River and the results were in agreement with metal concentration determined directly through atomic absorption spectrometry with graphite furnace. The method validation was performed through analysis of water standard reference material (1643e), which also presented a 7.2-fold enrichment factor. |
| doi_str_mv | 10.1007/s10098-010-0322-4 |
| format | Article |
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2
g
−1
, which was attributed to the 4-amine-2-mercaptopyrimidine molecule attachment onto its surface. The characterization through FTIR spectra demonstrated bands at 3347 cm
−1
assigned to N–H stretching vibrations and the absence of thiol bands at 2600 e 2547 cm
−1
at Si-mod spectrum is an indicative that the attachment occurred via SH groups. The linearization of adsorption isotherm data through the modified Langmuir equation resulted in a maximum adsorption capacity of 2.9 μmol g
−1
. The material was applied in a continuous flow system in the preconcentration of water samples from Paraná River and the results were in agreement with metal concentration determined directly through atomic absorption spectrometry with graphite furnace. The method validation was performed through analysis of water standard reference material (1643e), which also presented a 7.2-fold enrichment factor.</description><identifier>ISSN: 1618-954X</identifier><identifier>EISSN: 1618-9558</identifier><identifier>DOI: 10.1007/s10098-010-0322-4</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Adsorption ; Atomic absorption spectroscopy ; Band spectra ; Bands ; Continuous flow ; Earth and Environmental Science ; Environment ; Environmental Economics ; Environmental Engineering/Biotechnology ; Environmental policy ; Flow system ; Graphite ; Industrial and Production Engineering ; Industrial Chemistry/Chemical Engineering ; Ions ; Lead ; Ligands ; Mathematical analysis ; Metal concentrations ; Original Paper ; Reference materials ; Rivers ; Scientific imaging ; Silica ; Silicon dioxide ; Spectral analysis ; Spectrometry ; Surface chemistry ; Sustainable Development ; Synthesis ; Water analysis ; Water pollution ; Water resources management ; Water sampling</subject><ispartof>Clean technologies and environmental policy, 2011-04, Vol.13 (2), p.397-402</ispartof><rights>Springer-Verlag 2010</rights><rights>Springer-Verlag 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-fe834654b40f3e0f145d1fda2d0238bff39f5636f58ec94320d1daf59c09fcaf3</citedby><cites>FETCH-LOGICAL-c380t-fe834654b40f3e0f145d1fda2d0238bff39f5636f58ec94320d1daf59c09fcaf3</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/s10098-010-0322-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10098-010-0322-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids></links><search><creatorcontrib>Ferreira, Guilherme</creatorcontrib><creatorcontrib>Caetano, Laercio</creatorcontrib><creatorcontrib>Castro, Renata S. D.</creatorcontrib><creatorcontrib>Padilha, Pedro Magalhães</creatorcontrib><creatorcontrib>Castro, Gustavo Rocha</creatorcontrib><title>Synthesis, characterization, and application of modified silica in the removal and preconcentration of lead ions from natural river water</title><title>Clean technologies and environmental policy</title><addtitle>Clean Techn Environ Policy</addtitle><description>This paper describes the synthesis, modification, and application of modified silica for the removal of lead ions from aqueous medium. The modification reaction provided a reduction in surface are from 737 to 399 m
2
g
−1
, which was attributed to the 4-amine-2-mercaptopyrimidine molecule attachment onto its surface. The characterization through FTIR spectra demonstrated bands at 3347 cm
−1
assigned to N–H stretching vibrations and the absence of thiol bands at 2600 e 2547 cm
−1
at Si-mod spectrum is an indicative that the attachment occurred via SH groups. The linearization of adsorption isotherm data through the modified Langmuir equation resulted in a maximum adsorption capacity of 2.9 μmol g
−1
. The material was applied in a continuous flow system in the preconcentration of water samples from Paraná River and the results were in agreement with metal concentration determined directly through atomic absorption spectrometry with graphite furnace. The method validation was performed through analysis of water standard reference material (1643e), which also presented a 7.2-fold enrichment factor.</description><subject>Adsorption</subject><subject>Atomic absorption spectroscopy</subject><subject>Band spectra</subject><subject>Bands</subject><subject>Continuous flow</subject><subject>Earth and Environmental Science</subject><subject>Environment</subject><subject>Environmental Economics</subject><subject>Environmental Engineering/Biotechnology</subject><subject>Environmental policy</subject><subject>Flow system</subject><subject>Graphite</subject><subject>Industrial and Production Engineering</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Ions</subject><subject>Lead</subject><subject>Ligands</subject><subject>Mathematical analysis</subject><subject>Metal concentrations</subject><subject>Original Paper</subject><subject>Reference materials</subject><subject>Rivers</subject><subject>Scientific imaging</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Spectral analysis</subject><subject>Spectrometry</subject><subject>Surface chemistry</subject><subject>Sustainable Development</subject><subject>Synthesis</subject><subject>Water analysis</subject><subject>Water pollution</subject><subject>Water resources management</subject><subject>Water sampling</subject><issn>1618-954X</issn><issn>1618-9558</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kc9qFTEUhwdRsK0-gLvQTV109OTvZJZSWhUKLlRwF9LkpE2ZSabJ3Er7Br61ub1SQaib5HD4vnNIfl33hsI7CjC8r-0cdQ8UeuCM9eJZt0cV1f0opX7-WIsfL7v9Wq8BGBsY7HW_vt6l9QprrMfEXdli3Yol3ts15nRMbPLELssU3UOD5EDm7GOI6EmN2zaJiTSfFJzzrZ0ejKWgy8lhWsujNqH1pNWVhJJnkuy6KQ0v8RYL-Wnb0lfdi2Cniq__3Afd97PTbyef-vMvHz-ffDjvHdew9gE1F0qKCwGBIwQqpKfBW-aBcX0RAh-DVFwFqdGNgjPw1NsgRwdjcDbwg-5oN3cp-WaDdTVzrA6nySbMm2rGNkeBkkMj3_6XpMMwtH9lnDb08B_0Om9Kau8wWg5qVEroBtEd5EqutWAwS4mzLXeGgtmmaHYpmpai2aZoRHPYzqmNTZdY_g5-WvoNLpihwQ</recordid><startdate>20110401</startdate><enddate>20110401</enddate><creator>Ferreira, Guilherme</creator><creator>Caetano, Laercio</creator><creator>Castro, Renata S. 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D.</au><au>Padilha, Pedro Magalhães</au><au>Castro, Gustavo Rocha</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis, characterization, and application of modified silica in the removal and preconcentration of lead ions from natural river water</atitle><jtitle>Clean technologies and environmental policy</jtitle><stitle>Clean Techn Environ Policy</stitle><date>2011-04-01</date><risdate>2011</risdate><volume>13</volume><issue>2</issue><spage>397</spage><epage>402</epage><pages>397-402</pages><issn>1618-954X</issn><eissn>1618-9558</eissn><abstract>This paper describes the synthesis, modification, and application of modified silica for the removal of lead ions from aqueous medium. The modification reaction provided a reduction in surface are from 737 to 399 m
2
g
−1
, which was attributed to the 4-amine-2-mercaptopyrimidine molecule attachment onto its surface. The characterization through FTIR spectra demonstrated bands at 3347 cm
−1
assigned to N–H stretching vibrations and the absence of thiol bands at 2600 e 2547 cm
−1
at Si-mod spectrum is an indicative that the attachment occurred via SH groups. The linearization of adsorption isotherm data through the modified Langmuir equation resulted in a maximum adsorption capacity of 2.9 μmol g
−1
. The material was applied in a continuous flow system in the preconcentration of water samples from Paraná River and the results were in agreement with metal concentration determined directly through atomic absorption spectrometry with graphite furnace. The method validation was performed through analysis of water standard reference material (1643e), which also presented a 7.2-fold enrichment factor.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s10098-010-0322-4</doi><tpages>6</tpages></addata></record> |
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| subjects | Adsorption Atomic absorption spectroscopy Band spectra Bands Continuous flow Earth and Environmental Science Environment Environmental Economics Environmental Engineering/Biotechnology Environmental policy Flow system Graphite Industrial and Production Engineering Industrial Chemistry/Chemical Engineering Ions Lead Ligands Mathematical analysis Metal concentrations Original Paper Reference materials Rivers Scientific imaging Silica Silicon dioxide Spectral analysis Spectrometry Surface chemistry Sustainable Development Synthesis Water analysis Water pollution Water resources management Water sampling |
| title | Synthesis, characterization, and application of modified silica in the removal and preconcentration of lead ions from natural river water |
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