| Titre : |
Colorimetric sensing of H2PO4- using a Pb2+ complex of a pyridylazo dye in aqueous solution |
| Type de document : |
texte imprimé |
| Auteurs : |
Mahiro Shimizu, Auteur ; Shunichi Aikawa, Auteur ; Yasumasa Fukushima, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 544-551 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Capteurs chimiques
Colorants
Colorimétrie
Phosphate dihydrogèneLe dihydrogène phosphate est un ion inorganique de formule H2PO4. Les phosphates sont largement présents dans les systèmes naturels. (Wikipedia)
Produits chimiques -- Détection
Solutions aqueuses (chimie)
|
| Index. décimale : |
547.86 Colorants et pigments |
| Résumé : |
This study develops a sensitive and selective colorimetric probe for the detection of dihydrogen phosphate (H2PO4-) based on a lead ion (Pb2+) complex of a commercially available pyridylazo dye (PAPS) in aqueous media under physiological conditions. The complex was made by adding Pb2+ to PAPS in a 1:1 stoichiometric ratio (PAPS-Pb2+), which was accompanied by the remarkable solution change from yellow to purple. The colorimetric sensing of H2PO4- over other anions with PAPS-Pb2+ occurred owing to the regeneration of original PAPS by the interaction of H2PO4- with Pb2+ in a 1:2 molar ratio. Moreover, the H2PO4- detection was less affected by the presence of other coexisting competitive anions. The colorimetric naked-eye behaviour of PAPS-Pb2+ rendered a useful and convenient probe for the detection of H2PO4- via the indicator displacement assay. |
| Note de contenu : |
- Materials and instrumentation
- Absorption spectral study
- Table 1 : Comparison of various colorimetric chemosensors reported for dihydrogen phosphate (H2PO4) detection
- Table 2 : Determination of hydrogen phosphate (HOPO4) in water samples |
| DOI : |
https://doi.org/10.1111/cote.12671 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12671 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39834 |
in COLORATION TECHNOLOGY > Vol. 139, N° 5 (10/2023) . - p. 544-551
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