Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury
In the present work a pH-dependent cloud point extraction procedure using pH-sensitive hydrogel polymer was applied for preconcentration and spectrophotometric determination of the Hg(II) as its Thio micher's ketone complex. Central composite design (CCD) and response surface method were appl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Iranian Chemical Society
2014-01-01
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| Series: | Analytical and Bioanalytical Chemistry Research |
| Subjects: | |
| Online Access: | http://www.analchemres.org/article_5503_da417648627cf99bc95797ba6861e630.pdf |
| _version_ | 1811246561581072384 |
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| author | Shima Jahangiri Morteza Bahram Khalil Farhadi Reza Hasanzadeh |
| author_facet | Shima Jahangiri Morteza Bahram Khalil Farhadi Reza Hasanzadeh |
| author_sort | Shima Jahangiri |
| collection | DOAJ |
| description | In the present work a pH-dependent cloud point extraction procedure using pH-sensitive hydrogel polymer was applied for
preconcentration and spectrophotometric determination of the Hg(II) as its Thio micher's ketone complex. Central composite design (CCD)
and response surface method were applied to design the experiments and find out the optimum conditions. Four factors entitled
concentration of hydrogel, HCl, TMK and KCl (to study the salting out effect) were investigated. At the optimum conditions, the analytical
characteristics of the method (e.g., limit of detection, linear range, Relative standard deviation) were obtained. Linearity was obeyed in the
range of 5-200 ng ml
-1
of Hg(II) with a correlation coefficient of 0.987. The detection limit of the method was 1 ng ml
-1
for Hg(II) ion.
Relative standard deviation (RSD) for 7 replicate determinations of complex mercury with Thio micher's ketone was 3.37%. The
interference effect of some anions and cations was also investigated. |
| first_indexed | 2024-04-12T14:55:15Z |
| format | Article |
| id | doaj.art-574fec1fc5c24cb8b9ef4c29ebef3b40 |
| institution | Directory Open Access Journal |
| issn | 2383-093X 2383-093X |
| language | English |
| last_indexed | 2024-04-12T14:55:15Z |
| publishDate | 2014-01-01 |
| publisher | Iranian Chemical Society |
| record_format | Article |
| series | Analytical and Bioanalytical Chemistry Research |
| spelling | doaj.art-574fec1fc5c24cb8b9ef4c29ebef3b402022-12-22T03:28:16ZengIranian Chemical SocietyAnalytical and Bioanalytical Chemistry Research2383-093X2383-093X2014-01-0111293710.22036/abcr.2014.55035503Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of MercuryShima Jahangiri0Morteza Bahram1Khalil Farhadi2Reza Hasanzadeh3Department of Chemistry, Faculty of Science, Urmia University, Urmia, IranDepartment of Chemistry, Faculty of Science, Urmia University, Urmia, IranDepartment of Chemistry, Faculty of Science, Urmia University, Urmia, IranDepartment of Chemistry, Faculty of Science, Urmia University, Urmia, IranIn the present work a pH-dependent cloud point extraction procedure using pH-sensitive hydrogel polymer was applied for preconcentration and spectrophotometric determination of the Hg(II) as its Thio micher's ketone complex. Central composite design (CCD) and response surface method were applied to design the experiments and find out the optimum conditions. Four factors entitled concentration of hydrogel, HCl, TMK and KCl (to study the salting out effect) were investigated. At the optimum conditions, the analytical characteristics of the method (e.g., limit of detection, linear range, Relative standard deviation) were obtained. Linearity was obeyed in the range of 5-200 ng ml -1 of Hg(II) with a correlation coefficient of 0.987. The detection limit of the method was 1 ng ml -1 for Hg(II) ion. Relative standard deviation (RSD) for 7 replicate determinations of complex mercury with Thio micher's ketone was 3.37%. The interference effect of some anions and cations was also investigated.http://www.analchemres.org/article_5503_da417648627cf99bc95797ba6861e630.pdfpH-sensitive hydrogelCentral composite design (CCD)Thiomicher's ketone (TMK)Mercury |
| spellingShingle | Shima Jahangiri Morteza Bahram Khalil Farhadi Reza Hasanzadeh Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury Analytical and Bioanalytical Chemistry Research pH-sensitive hydrogel Central composite design (CCD) Thiomicher's ketone (TMK) Mercury |
| title | Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury |
| title_full | Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury |
| title_fullStr | Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury |
| title_full_unstemmed | Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury |
| title_short | Central Composite Design for the Optimization of Hydrogel Based pH-Dependent Extraction and Spectrophotometric Determination of Mercury |
| title_sort | central composite design for the optimization of hydrogel based ph dependent extraction and spectrophotometric determination of mercury |
| topic | pH-sensitive hydrogel Central composite design (CCD) Thiomicher's ketone (TMK) Mercury |
| url | http://www.analchemres.org/article_5503_da417648627cf99bc95797ba6861e630.pdf |
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