PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples
An effective electrode was developed based on electromembrane extraction (EME) and square wave voltammetry (SWV) for simultaneous separation, pre-concentration and determination of lead (II) (Pb(II)) ions in complex aqueous samples. Electrochemically reduced graphene oxide-graphite reinforced carbon...
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Elsevier
2016
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| author | Hamsawahini, Kunashegaran Sathishkumar, Palanivel Ahamad, Rahmalan Mohd. Yusoff, Abdull Rahim |
| author_facet | Hamsawahini, Kunashegaran Sathishkumar, Palanivel Ahamad, Rahmalan Mohd. Yusoff, Abdull Rahim |
| author_sort | Hamsawahini, Kunashegaran |
| collection | ePrints |
| description | An effective electrode was developed based on electromembrane extraction (EME) and square wave voltammetry (SWV) for simultaneous separation, pre-concentration and determination of lead (II) (Pb(II)) ions in complex aqueous samples. Electrochemically reduced graphene oxide-graphite reinforced carbon (ErGO-GRC) was utilized in conjunction with the SWV. Pb(II) ions were extracted from an aqueous sample solution into an acidic acceptor phase (1 M HCl) in the lumen of the polyvinylidene fluoride (PVDF) membrane bag by the application of voltage of maximum 6 V across the supported liquid membrane (SLM), consisting of organic solvent and di-(2-ethylhexyl)phosphoric acid (D2EHPA). The parameters affecting the EME were optimized for Pb(II) ions. The optimum EME conditions were found to be 20% D2EHPA in 1-octanol impregnated in the wall of PVDF membrane (PVDF17) as the SLM, extraction time of 20 min, pH of sample solution of 8 and a voltage of 5 V. The PVDF-ErGO-GRC electrode system attained enrichment factors of 40 times and 80% of extraction with relative standard deviations (n=5) of 8.3%. Good linearity ranging from 0.25 to 2 nM with coefficients correlation of 0.999 was obtained. The Pb(II) ions detection limit of PVDF-ErGO-GRC electrode was found to be 0.09 nM. The newly developed single setup electrochemical system was applied to complex aqueous samples such as tap, river and sea water to evaluate the feasibility of the method for applications. |
| first_indexed | 2024-03-05T20:07:21Z |
| format | Article |
| id | utm.eprints-73927 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:07:21Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | utm.eprints-739272017-11-22T12:07:33Z http://eprints.utm.my/73927/ PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples Hamsawahini, Kunashegaran Sathishkumar, Palanivel Ahamad, Rahmalan Mohd. Yusoff, Abdull Rahim QD Chemistry An effective electrode was developed based on electromembrane extraction (EME) and square wave voltammetry (SWV) for simultaneous separation, pre-concentration and determination of lead (II) (Pb(II)) ions in complex aqueous samples. Electrochemically reduced graphene oxide-graphite reinforced carbon (ErGO-GRC) was utilized in conjunction with the SWV. Pb(II) ions were extracted from an aqueous sample solution into an acidic acceptor phase (1 M HCl) in the lumen of the polyvinylidene fluoride (PVDF) membrane bag by the application of voltage of maximum 6 V across the supported liquid membrane (SLM), consisting of organic solvent and di-(2-ethylhexyl)phosphoric acid (D2EHPA). The parameters affecting the EME were optimized for Pb(II) ions. The optimum EME conditions were found to be 20% D2EHPA in 1-octanol impregnated in the wall of PVDF membrane (PVDF17) as the SLM, extraction time of 20 min, pH of sample solution of 8 and a voltage of 5 V. The PVDF-ErGO-GRC electrode system attained enrichment factors of 40 times and 80% of extraction with relative standard deviations (n=5) of 8.3%. Good linearity ranging from 0.25 to 2 nM with coefficients correlation of 0.999 was obtained. The Pb(II) ions detection limit of PVDF-ErGO-GRC electrode was found to be 0.09 nM. The newly developed single setup electrochemical system was applied to complex aqueous samples such as tap, river and sea water to evaluate the feasibility of the method for applications. Elsevier 2016 Article PeerReviewed Hamsawahini, Kunashegaran and Sathishkumar, Palanivel and Ahamad, Rahmalan and Mohd. Yusoff, Abdull Rahim (2016) PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples. Talanta, 148 . pp. 101-107. ISSN 0039-9140 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945576677&doi=10.1016%2fj.talanta.2015.10.044&partnerID=40&md5=ba437f38dfca6b16000f4b862ba69b0c |
| spellingShingle | QD Chemistry Hamsawahini, Kunashegaran Sathishkumar, Palanivel Ahamad, Rahmalan Mohd. Yusoff, Abdull Rahim PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title | PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title_full | PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title_fullStr | PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title_full_unstemmed | PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title_short | PVDF-ErGO-GRC electrode: a single setup electrochemical system for separation, pre-concentration and detection of lead ions in complex aqueous samples |
| title_sort | pvdf ergo grc electrode a single setup electrochemical system for separation pre concentration and detection of lead ions in complex aqueous samples |
| topic | QD Chemistry |
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