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Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi)
A novel, simple, sensitive and selective method for the indirect spectrophotometric determination of chromium(vi) was developed on the basis of vortex-assisted liquid–liquid microextraction (VALLME) of an ion association pair formed between the triiodide anion (I(3)(−)) and cationic dye Astrazone Br...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9087929/ https://www.ncbi.nlm.nih.gov/pubmed/35547882 http://dx.doi.org/10.1039/c8ra07514j |
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author | Bazel, Yaroslav Riabukhina, Tetiana |
author_facet | Bazel, Yaroslav Riabukhina, Tetiana |
author_sort | Bazel, Yaroslav |
collection | PubMed |
description | A novel, simple, sensitive and selective method for the indirect spectrophotometric determination of chromium(vi) was developed on the basis of vortex-assisted liquid–liquid microextraction (VALLME) of an ion association pair formed between the triiodide anion (I(3)(−)) and cationic dye Astrazone Brilliant Red 4G (ABR). The indirect spectrophotometric determination of chromium(vi) was based on the redox-reaction of Cr(vi) with iodide and formed I(3)(−). The triiodide anion was determined spectrophotometrically at 530 nm following VALLME of an ion association pair with ABR. The calibration plot was linear in the range 0.050–4.2 μg L(−1) (R(2) = 0.998), and limit of detection (LOD) was 0.015 μg L(−1) for Cr(vi). The suggested procedure was successfully applied for the determination Cr(vi) in water samples (RSD 3.3–5.7%, recovery 97.7–102.8% when determining ultratrace levels Cr(vi) at 0.55–5.77 μg L(−1)), the accuracy of the method was assessed through a comparison with reference methods and certified reference materials. |
format | Online Article Text |
id | pubmed-9087929 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90879292022-05-10 Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) Bazel, Yaroslav Riabukhina, Tetiana RSC Adv Chemistry A novel, simple, sensitive and selective method for the indirect spectrophotometric determination of chromium(vi) was developed on the basis of vortex-assisted liquid–liquid microextraction (VALLME) of an ion association pair formed between the triiodide anion (I(3)(−)) and cationic dye Astrazone Brilliant Red 4G (ABR). The indirect spectrophotometric determination of chromium(vi) was based on the redox-reaction of Cr(vi) with iodide and formed I(3)(−). The triiodide anion was determined spectrophotometrically at 530 nm following VALLME of an ion association pair with ABR. The calibration plot was linear in the range 0.050–4.2 μg L(−1) (R(2) = 0.998), and limit of detection (LOD) was 0.015 μg L(−1) for Cr(vi). The suggested procedure was successfully applied for the determination Cr(vi) in water samples (RSD 3.3–5.7%, recovery 97.7–102.8% when determining ultratrace levels Cr(vi) at 0.55–5.77 μg L(−1)), the accuracy of the method was assessed through a comparison with reference methods and certified reference materials. The Royal Society of Chemistry 2018-10-15 /pmc/articles/PMC9087929/ /pubmed/35547882 http://dx.doi.org/10.1039/c8ra07514j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Bazel, Yaroslav Riabukhina, Tetiana Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title | Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title_full | Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title_fullStr | Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title_full_unstemmed | Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title_short | Vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
title_sort | vortex-assisted liquid–liquid microextraction and indirect spectrophotometric determination of chromium(vi) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9087929/ https://www.ncbi.nlm.nih.gov/pubmed/35547882 http://dx.doi.org/10.1039/c8ra07514j |
work_keys_str_mv | AT bazelyaroslav vortexassistedliquidliquidmicroextractionandindirectspectrophotometricdeterminationofchromiumvi AT riabukhinatetiana vortexassistedliquidliquidmicroextractionandindirectspectrophotometricdeterminationofchromiumvi |