Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples
A sol-gel thiocyanatopropyl-functionalized silica sorbent was synthesized and employed for an automated on-line microcolumn preconcentration platform as a front-end to inductively coupled plasma atomic emission spectroscopy (ICP-AES) for the simultaneous determination of Cd(II), Pb(II), Cu(II), Cr(I...
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| Format: | Article |
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MDPI AG
2021-07-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/15/4461 |
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| author | Natalia Manousi Abuzar Kabir Kenneth G. Furton George A. Zachariadis Aristidis Anthemidis |
| author_facet | Natalia Manousi Abuzar Kabir Kenneth G. Furton George A. Zachariadis Aristidis Anthemidis |
| author_sort | Natalia Manousi |
| collection | DOAJ |
| description | A sol-gel thiocyanatopropyl-functionalized silica sorbent was synthesized and employed for an automated on-line microcolumn preconcentration platform as a front-end to inductively coupled plasma atomic emission spectroscopy (ICP-AES) for the simultaneous determination of Cd(II), Pb(II), Cu(II), Cr(III), Co(II), Ni(II), Zn(II), Mn(II), Hg(II), and V(II). The developed system is based on an easy-to-repack microcolumn construction integrated into a flow injection manifold coupled directly to ICP-AES’s nebulizer. After on-line extraction/preconcentration of the target analyte onto the surface of the sorbent, successive elution with 1.0 mol L<sup>−1</sup> HNO<sub>3</sub> was performed. All main chemical and hydrodynamic factors affecting the effectiveness of the system were thoroughly investigated and optimized. Under optimized experimental conditions, for 60 s preconcentration time, the enhancement factor achieved for the target analytes was between 31 to 53. The limits of detection varied in the range of 0.05 to 0.24 μg L<sup>−1</sup>, while the limits of quantification ranged from 0.17 to 0.79 μg L<sup>−1</sup>. The precision of the method was expressed in terms of relative standard deviation (RSD%) and was less than 7.9%. Furthermore, good method accuracy was observed by analyzing three certified reference materials. The proposed method was also successfully employed for the analysis of environmental water samples. |
| first_indexed | 2024-03-10T09:10:45Z |
| format | Article |
| id | doaj.art-0dd1fb6113044546bcf41b722255ca44 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T09:10:45Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-0dd1fb6113044546bcf41b722255ca442023-11-22T05:58:27ZengMDPI AGMolecules1420-30492021-07-012615446110.3390/molecules26154461Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water SamplesNatalia Manousi0Abuzar Kabir1Kenneth G. Furton2George A. Zachariadis3Aristidis Anthemidis4Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceInternational Forensic Research Institute, Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33131, USAInternational Forensic Research Institute, Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33131, USALaboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceA sol-gel thiocyanatopropyl-functionalized silica sorbent was synthesized and employed for an automated on-line microcolumn preconcentration platform as a front-end to inductively coupled plasma atomic emission spectroscopy (ICP-AES) for the simultaneous determination of Cd(II), Pb(II), Cu(II), Cr(III), Co(II), Ni(II), Zn(II), Mn(II), Hg(II), and V(II). The developed system is based on an easy-to-repack microcolumn construction integrated into a flow injection manifold coupled directly to ICP-AES’s nebulizer. After on-line extraction/preconcentration of the target analyte onto the surface of the sorbent, successive elution with 1.0 mol L<sup>−1</sup> HNO<sub>3</sub> was performed. All main chemical and hydrodynamic factors affecting the effectiveness of the system were thoroughly investigated and optimized. Under optimized experimental conditions, for 60 s preconcentration time, the enhancement factor achieved for the target analytes was between 31 to 53. The limits of detection varied in the range of 0.05 to 0.24 μg L<sup>−1</sup>, while the limits of quantification ranged from 0.17 to 0.79 μg L<sup>−1</sup>. The precision of the method was expressed in terms of relative standard deviation (RSD%) and was less than 7.9%. Furthermore, good method accuracy was observed by analyzing three certified reference materials. The proposed method was also successfully employed for the analysis of environmental water samples.https://www.mdpi.com/1420-3049/26/15/4461automationflow injectioninductively coupled plasmasol-gelsolid-phase extractionmetals |
| spellingShingle | Natalia Manousi Abuzar Kabir Kenneth G. Furton George A. Zachariadis Aristidis Anthemidis Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples Molecules automation flow injection inductively coupled plasma sol-gel solid-phase extraction metals |
| title | Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples |
| title_full | Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples |
| title_fullStr | Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples |
| title_full_unstemmed | Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples |
| title_short | Multi-Element Analysis Based on an Automated On-Line Microcolumn Separation/Preconcentration System Using a Novel Sol-Gel Thiocyanatopropyl-Functionalized Silica Sorbent Prior to ICP-AES for Environmental Water Samples |
| title_sort | multi element analysis based on an automated on line microcolumn separation preconcentration system using a novel sol gel thiocyanatopropyl functionalized silica sorbent prior to icp aes for environmental water samples |
| topic | automation flow injection inductively coupled plasma sol-gel solid-phase extraction metals |
| url | https://www.mdpi.com/1420-3049/26/15/4461 |
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