Electrocatalytic determination of Cd and Pb using an -cysteine tungstophosphate self-assembled monolayer on a polycrystalline gold electrode
In this study, a novel sensitive surface based on an l -cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd 2+ and Pb 2+ in trace amounts. The electrocatalytic effect of this modified electrode toward Cd 2+ and Pb 2+ wa...
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| Veröffentlicht in: | New journal of chemistry 2019-09, Vol.43 (36), p.14417-14425 |
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| container_issue | 36 |
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| container_title | New journal of chemistry |
| container_volume | 43 |
| creator | Dianat, Somayeh Hatefi-Mehrjardi, Abdolhamid Mahmoodzadeh, Kourosh Kakhki, Somayeh |
| description | In this study, a novel sensitive surface based on an
l
-cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd
2+
and Pb
2+
in trace amounts. The electrocatalytic effect of this modified electrode toward Cd
2+
and Pb
2+
was evaluated by square wave voltammetry (SWV) as a sensitive method in the presence of the two analytes with bare and Au-(Cys)PW electrodes. The experimental conditions were optimized in order to evaluate the best analytical parameters of the sensor. A linear range of 0.01-0.2 μmol L
−1
for both analytes and detection limits of 9.0 nmol L
−1
and 4.0 nmol L
−1
for Cd
2+
and Pb
2+
, respectively, were determined based on a signal-to-noise ratio (S/N) equal to 3. Reproducibility and repeatability studies were also performed, and the Au-(Cys)PW electrode was employed for the determination of Cd
2+
or Pb
2+
in an industrial wastewater sample, which revealed the potential application of the modified electrode.
Constructing a sensitive electrochemical sensor based on (Cys)PW for Cd
2+
and Pb
2+
detection at the nanomolar level with remarkable selectivity. |
| doi_str_mv | 10.1039/c9nj03459e |
| format | Article |
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l
-cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd
2+
and Pb
2+
in trace amounts. The electrocatalytic effect of this modified electrode toward Cd
2+
and Pb
2+
was evaluated by square wave voltammetry (SWV) as a sensitive method in the presence of the two analytes with bare and Au-(Cys)PW electrodes. The experimental conditions were optimized in order to evaluate the best analytical parameters of the sensor. A linear range of 0.01-0.2 μmol L
−1
for both analytes and detection limits of 9.0 nmol L
−1
and 4.0 nmol L
−1
for Cd
2+
and Pb
2+
, respectively, were determined based on a signal-to-noise ratio (S/N) equal to 3. Reproducibility and repeatability studies were also performed, and the Au-(Cys)PW electrode was employed for the determination of Cd
2+
or Pb
2+
in an industrial wastewater sample, which revealed the potential application of the modified electrode.
Constructing a sensitive electrochemical sensor based on (Cys)PW for Cd
2+
and Pb
2+
detection at the nanomolar level with remarkable selectivity.</description><identifier>ISSN: 1144-0546</identifier><identifier>EISSN: 1369-9261</identifier><identifier>DOI: 10.1039/c9nj03459e</identifier><language>eng</language><ispartof>New journal of chemistry, 2019-09, Vol.43 (36), p.14417-14425</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids></links><search><creatorcontrib>Dianat, Somayeh</creatorcontrib><creatorcontrib>Hatefi-Mehrjardi, Abdolhamid</creatorcontrib><creatorcontrib>Mahmoodzadeh, Kourosh</creatorcontrib><creatorcontrib>Kakhki, Somayeh</creatorcontrib><title>Electrocatalytic determination of Cd and Pb using an -cysteine tungstophosphate self-assembled monolayer on a polycrystalline gold electrode</title><title>New journal of chemistry</title><description>In this study, a novel sensitive surface based on an
l
-cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd
2+
and Pb
2+
in trace amounts. The electrocatalytic effect of this modified electrode toward Cd
2+
and Pb
2+
was evaluated by square wave voltammetry (SWV) as a sensitive method in the presence of the two analytes with bare and Au-(Cys)PW electrodes. The experimental conditions were optimized in order to evaluate the best analytical parameters of the sensor. A linear range of 0.01-0.2 μmol L
−1
for both analytes and detection limits of 9.0 nmol L
−1
and 4.0 nmol L
−1
for Cd
2+
and Pb
2+
, respectively, were determined based on a signal-to-noise ratio (S/N) equal to 3. Reproducibility and repeatability studies were also performed, and the Au-(Cys)PW electrode was employed for the determination of Cd
2+
or Pb
2+
in an industrial wastewater sample, which revealed the potential application of the modified electrode.
Constructing a sensitive electrochemical sensor based on (Cys)PW for Cd
2+
and Pb
2+
detection at the nanomolar level with remarkable selectivity.</description><issn>1144-0546</issn><issn>1369-9261</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFTz1PwzAUtBBIlI-FHenxAwI2ToM8V0WMDN2jV_sldeXYkZ87-D_wowkCiQ2mu9PpTndC3Cn5qKQ2T9bEo9Tt2tCZWCndmcY8d-p84aptG7luu0txxXyUUqmXTq3ExzaQLTlZLBhq8RYcFcqTj1h8ipAG2DjA6OB9Dyf2cVwENLZyIR8JyimOXNJ8SDwfsBAwhaFBZpr2gRxMKaaAlTIsZQhzCtXmJYwhfMXHFBzQ9wRHN-JiwMB0-4PX4v51u9u8NZltP2c_Ya7970X9v__wl9_PbtCfSXxkEw</recordid><startdate>20190916</startdate><enddate>20190916</enddate><creator>Dianat, Somayeh</creator><creator>Hatefi-Mehrjardi, Abdolhamid</creator><creator>Mahmoodzadeh, Kourosh</creator><creator>Kakhki, Somayeh</creator><scope/></search><sort><creationdate>20190916</creationdate><title>Electrocatalytic determination of Cd and Pb using an -cysteine tungstophosphate self-assembled monolayer on a polycrystalline gold electrode</title><author>Dianat, Somayeh ; Hatefi-Mehrjardi, Abdolhamid ; Mahmoodzadeh, Kourosh ; Kakhki, Somayeh</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_c9nj03459e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dianat, Somayeh</creatorcontrib><creatorcontrib>Hatefi-Mehrjardi, Abdolhamid</creatorcontrib><creatorcontrib>Mahmoodzadeh, Kourosh</creatorcontrib><creatorcontrib>Kakhki, Somayeh</creatorcontrib><jtitle>New journal of chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dianat, Somayeh</au><au>Hatefi-Mehrjardi, Abdolhamid</au><au>Mahmoodzadeh, Kourosh</au><au>Kakhki, Somayeh</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrocatalytic determination of Cd and Pb using an -cysteine tungstophosphate self-assembled monolayer on a polycrystalline gold electrode</atitle><jtitle>New journal of chemistry</jtitle><date>2019-09-16</date><risdate>2019</risdate><volume>43</volume><issue>36</issue><spage>14417</spage><epage>14425</epage><pages>14417-14425</pages><issn>1144-0546</issn><eissn>1369-9261</eissn><abstract>In this study, a novel sensitive surface based on an
l
-cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd
2+
and Pb
2+
in trace amounts. The electrocatalytic effect of this modified electrode toward Cd
2+
and Pb
2+
was evaluated by square wave voltammetry (SWV) as a sensitive method in the presence of the two analytes with bare and Au-(Cys)PW electrodes. The experimental conditions were optimized in order to evaluate the best analytical parameters of the sensor. A linear range of 0.01-0.2 μmol L
−1
for both analytes and detection limits of 9.0 nmol L
−1
and 4.0 nmol L
−1
for Cd
2+
and Pb
2+
, respectively, were determined based on a signal-to-noise ratio (S/N) equal to 3. Reproducibility and repeatability studies were also performed, and the Au-(Cys)PW electrode was employed for the determination of Cd
2+
or Pb
2+
in an industrial wastewater sample, which revealed the potential application of the modified electrode.
Constructing a sensitive electrochemical sensor based on (Cys)PW for Cd
2+
and Pb
2+
detection at the nanomolar level with remarkable selectivity.</abstract><doi>10.1039/c9nj03459e</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1144-0546 |
| ispartof | New journal of chemistry, 2019-09, Vol.43 (36), p.14417-14425 |
| issn | 1144-0546 1369-9261 |
| language | eng |
| recordid | cdi_rsc_primary_c9nj03459e |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| title | Electrocatalytic determination of Cd and Pb using an -cysteine tungstophosphate self-assembled monolayer on a polycrystalline gold electrode |
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