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Self-assembled monolayers of crown ethers for solid phase extraction in flow-injection analysis
Modification of a gold electrode with 2-[(6-mercaptohexyl)oxy]methyl-15-crown-5 yielded a self-assembled monolayer (SAM), CESAM, that preconcentrated Pb(II) from aqueous solution. With a 20 h modification, measurements by the copper underpotential deposition method showed that the fraction of the su...
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| Published in: | Analytica chimica acta 2003-08, Vol.489 (1), p.13-19 |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c368t-5ab2c1ed3d89e6ef63ee834c004f7f656d1863b9c3ca06ec5ed59ac62d5fe1fa3 |
| container_end_page | 19 |
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| container_title | Analytica chimica acta |
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| creator | Kijak, Anna M Cox, James A |
| description | Modification of a gold electrode with 2-[(6-mercaptohexyl)oxy]methyl-15-crown-5 yielded a self-assembled monolayer (SAM), CESAM, that preconcentrated Pb(II) from aqueous solution. With a 20
h modification, measurements by the copper underpotential deposition method showed that the fraction of the surface covered,
Θ, was 0.99. Proof-of-concept was obtained for an analytical strategy in which the Pb(II)-CESAM was released into a flow stream by electrochemical oxidation of the gold thiolate and detected amperometrically. A detection limit of 6
pmol Pb(II) was estimated from the signal-to-noise ratio. Electrochemical release into a flow injection analysis system with detection by argon inductively coupled plasma spectroscopy provided detection of 0.2
nmol Pb(II) in a 200
μL injection. Analytical utility requires rapid, reproducible renewal of the CESAM. With 30–90
s modifications,
Θ=0.97±0.01 and was independent of modification time over that range. |
| doi_str_mv | 10.1016/S0003-2670(03)00713-X |
| format | article |
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h modification, measurements by the copper underpotential deposition method showed that the fraction of the surface covered,
Θ, was 0.99. Proof-of-concept was obtained for an analytical strategy in which the Pb(II)-CESAM was released into a flow stream by electrochemical oxidation of the gold thiolate and detected amperometrically. A detection limit of 6
pmol Pb(II) was estimated from the signal-to-noise ratio. Electrochemical release into a flow injection analysis system with detection by argon inductively coupled plasma spectroscopy provided detection of 0.2
nmol Pb(II) in a 200
μL injection. Analytical utility requires rapid, reproducible renewal of the CESAM. With 30–90
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h modification, measurements by the copper underpotential deposition method showed that the fraction of the surface covered,
Θ, was 0.99. Proof-of-concept was obtained for an analytical strategy in which the Pb(II)-CESAM was released into a flow stream by electrochemical oxidation of the gold thiolate and detected amperometrically. A detection limit of 6
pmol Pb(II) was estimated from the signal-to-noise ratio. Electrochemical release into a flow injection analysis system with detection by argon inductively coupled plasma spectroscopy provided detection of 0.2
nmol Pb(II) in a 200
μL injection. Analytical utility requires rapid, reproducible renewal of the CESAM. With 30–90
s modifications,
Θ=0.97±0.01 and was independent of modification time over that range.</description><subject>Analytical chemistry</subject><subject>Chemistry</subject><subject>Electrochemical methods</subject><subject>Exact sciences and technology</subject><subject>Plasma emission</subject><subject>Preconcentration</subject><subject>Self-assembled monolayer</subject><subject>Spectrometric and optical methods</subject><subject>Voltammetry</subject><issn>0003-2670</issn><issn>1873-4324</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LAzEQhoMoWD9-gpCLoofVZLPJbk8i4hcIHqrQW0iTCUbSpGbWj_57t1b06GmY4ZkZ3oeQA85OOePqbMIYE1WtWnbMxAljLRfVdIOMeNeKqhF1s0lGv8g22UF8Gdqas2ZE9ASirwwizGcRHJ3nlKNZQkGaPbUlfyQK_fOq97lQzDE4ung2CBQ--2JsH3KiIVEf80cV0gusJyaZuMSAe2TLm4iw_1N3ydP11ePlbXX_cHN3eXFfWaG6vpJmVlsOTrhuDAq8EgCdaCxjjW-9ksrxTonZ2AprmAIrwcmxsap20gP3RuySo_XdRcmvb4C9nge0EKNJkN9Q87bjY9l0AyjX4JANsYDXixLmpiw1Z3qlU3_r1CtXeqjfOvV02Dv8eWDQmuiLSTbg37JkTLZdPXDnaw6GtO8BikYbIFlwoQxutMvhn09fozWMGw</recordid><startdate>20030811</startdate><enddate>20030811</enddate><creator>Kijak, Anna M</creator><creator>Cox, James A</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>20030811</creationdate><title>Self-assembled monolayers of crown ethers for solid phase extraction in flow-injection analysis</title><author>Kijak, Anna M ; Cox, James A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-5ab2c1ed3d89e6ef63ee834c004f7f656d1863b9c3ca06ec5ed59ac62d5fe1fa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Analytical chemistry</topic><topic>Chemistry</topic><topic>Electrochemical methods</topic><topic>Exact sciences and technology</topic><topic>Plasma emission</topic><topic>Preconcentration</topic><topic>Self-assembled monolayer</topic><topic>Spectrometric and optical methods</topic><topic>Voltammetry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kijak, Anna M</creatorcontrib><creatorcontrib>Cox, James A</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Analytica chimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kijak, Anna M</au><au>Cox, James A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Self-assembled monolayers of crown ethers for solid phase extraction in flow-injection analysis</atitle><jtitle>Analytica chimica acta</jtitle><date>2003-08-11</date><risdate>2003</risdate><volume>489</volume><issue>1</issue><spage>13</spage><epage>19</epage><pages>13-19</pages><issn>0003-2670</issn><eissn>1873-4324</eissn><coden>ACACAM</coden><abstract>Modification of a gold electrode with 2-[(6-mercaptohexyl)oxy]methyl-15-crown-5 yielded a self-assembled monolayer (SAM), CESAM, that preconcentrated Pb(II) from aqueous solution. With a 20
h modification, measurements by the copper underpotential deposition method showed that the fraction of the surface covered,
Θ, was 0.99. Proof-of-concept was obtained for an analytical strategy in which the Pb(II)-CESAM was released into a flow stream by electrochemical oxidation of the gold thiolate and detected amperometrically. A detection limit of 6
pmol Pb(II) was estimated from the signal-to-noise ratio. Electrochemical release into a flow injection analysis system with detection by argon inductively coupled plasma spectroscopy provided detection of 0.2
nmol Pb(II) in a 200
μL injection. Analytical utility requires rapid, reproducible renewal of the CESAM. With 30–90
s modifications,
Θ=0.97±0.01 and was independent of modification time over that range.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0003-2670(03)00713-X</doi><tpages>7</tpages></addata></record> |
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| issn | 0003-2670 1873-4324 |
| language | eng |
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| source | Elsevier |
| subjects | Analytical chemistry Chemistry Electrochemical methods Exact sciences and technology Plasma emission Preconcentration Self-assembled monolayer Spectrometric and optical methods Voltammetry |
| title | Self-assembled monolayers of crown ethers for solid phase extraction in flow-injection analysis |
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