Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS
A new phase transition microextraction method was developed for determination of trace amount of arsenic ions in water samples in this work. The method is based on the critical point of miscibility of solvents. In this method the mixed solution of sample and organic solvent is initially homogeneous...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-04-01
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| Series: | E3S Web of Conferences |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1051/e3sconf/20130137002 |
| _version_ | 1818875935760318464 |
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| author | Güçoğlu M. Efeçınar M. Şatıroğlu N. |
| author_facet | Güçoğlu M. Efeçınar M. Şatıroğlu N. |
| author_sort | Güçoğlu M. |
| collection | DOAJ |
| description | A new phase transition microextraction method was developed for determination of trace amount of arsenic ions in water samples in this work. The method is based on the critical point of miscibility of solvents. In this method the mixed solution of sample and organic solvent is initially homogeneous but is separated into two phases by adding a secondary solvent (modifier). In acidic medium As(V) was complexed with ammonium molybdate, this complex was quantitatively extracted to the mixture of organic solvent (acetonitrile/methyl isobutyl ketone) before ETAAS determination. Total inorganic arsenic (III, V) was extracted similarly after oxidation of As(III) to As(V) with nitric acid. Concentration of As(III) was calculated by difference in the concentration between total arsenic and As(V). Optimization of the experimental conditions and instrumental parameters was investigated in detail. A detection limit of 0.05 μgL−1 with enrichment factor of 85 was achieved for only 5 mL of sample. The analytical curve was linear in the concentration range of 0.25-4.00 μgL−1. Relative standard deviation (RSD) for 10 replicate determinations of 2.0 μgL−1 of As(V) was 4,1%. The method was successfully applied to preconcentration and determination of arsenic in real water samples. |
| first_indexed | 2024-12-19T13:34:24Z |
| format | Article |
| id | doaj.art-b92a13818dbe49c4a9ce6108d89365f3 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-19T13:34:24Z |
| publishDate | 2013-04-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-b92a13818dbe49c4a9ce6108d89365f32022-12-21T20:19:16ZengEDP SciencesE3S Web of Conferences2267-12422013-04-0113700210.1051/e3sconf/20130137002Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAASGüçoğlu M.Efeçınar M.Şatıroğlu N.A new phase transition microextraction method was developed for determination of trace amount of arsenic ions in water samples in this work. The method is based on the critical point of miscibility of solvents. In this method the mixed solution of sample and organic solvent is initially homogeneous but is separated into two phases by adding a secondary solvent (modifier). In acidic medium As(V) was complexed with ammonium molybdate, this complex was quantitatively extracted to the mixture of organic solvent (acetonitrile/methyl isobutyl ketone) before ETAAS determination. Total inorganic arsenic (III, V) was extracted similarly after oxidation of As(III) to As(V) with nitric acid. Concentration of As(III) was calculated by difference in the concentration between total arsenic and As(V). Optimization of the experimental conditions and instrumental parameters was investigated in detail. A detection limit of 0.05 μgL−1 with enrichment factor of 85 was achieved for only 5 mL of sample. The analytical curve was linear in the concentration range of 0.25-4.00 μgL−1. Relative standard deviation (RSD) for 10 replicate determinations of 2.0 μgL−1 of As(V) was 4,1%. The method was successfully applied to preconcentration and determination of arsenic in real water samples.http://dx.doi.org/10.1051/e3sconf/20130137002Arsenicpreconcentrationcomposition-induced phase separationETAAS |
| spellingShingle | Güçoğlu M. Efeçınar M. Şatıroğlu N. Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS E3S Web of Conferences Arsenic preconcentration composition-induced phase separation ETAAS |
| title | Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS |
| title_full | Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS |
| title_fullStr | Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS |
| title_full_unstemmed | Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS |
| title_short | Preconcentration of Arsenic in Water Samples Using the Composition-Induced Phase Separation Method and Determination by ETAAS |
| title_sort | preconcentration of arsenic in water samples using the composition induced phase separation method and determination by etaas |
| topic | Arsenic preconcentration composition-induced phase separation ETAAS |
| url | http://dx.doi.org/10.1051/e3sconf/20130137002 |
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