An All Solid State Potentiometric Sensor for Monohydrogen Phosphate Ions

An all solid state potentiometric sensor using anthracene thiourea derivative as ionophore was developed. It exhibited a near‐Nernstian slope of 30.8±1.0 mV/decade of activity for HPO42− ions in the concentration range of 1.0×10−7–1.0×10−3 M at pH 7.4. It displayed excellent selectivity for monohydr...

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Veröffentlicht in:	Electroanalysis (New York, N.Y.) N.Y.), 2013-08, Vol.25 (8), p.1864-1870
Hauptverfasser:	Kumar, Pankaj, Kim, Dong-Min, Hyun, Myung Ho, Won, Mi-Sook, Shim, Yoon-Bo
Format:	Artikel
Sprache:	eng
Schlagworte:	All-solid-state-membrane electrode Anion sensor Anions Anthracene thiourea derivative Barium chloride Ionophore Monohydrogen phosphate Phosphates Selectivity Sensors Solid state Standard reference materials Titration
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Zusammenfassung:	An all solid state potentiometric sensor using anthracene thiourea derivative as ionophore was developed. It exhibited a near‐Nernstian slope of 30.8±1.0 mV/decade of activity for HPO42− ions in the concentration range of 1.0×10−7–1.0×10−3 M at pH 7.4. It displayed excellent selectivity for monohydrogen phosphate over other anions and the selectivity sequence was determined as HPO42−>SO42−>Cl−>NO3−>OAc−>I−>ClO4−. The developed sensor was evaluated for the analysis of monohydrogen phosphate ions in a standard reference material (SRM 1548) as well as in the potentiometric titration of phosphate ions with a barium chloride solution.
ISSN:	1040-0397 1521-4109
DOI:	10.1002/elan.201300142