An All Solid State Potentiometric Sensor for Monohydrogen Phosphate Ions | Zendy

Kumar Pankaj | Zendy; Kim DongMin | Zendy; Hyun Myung Ho | Zendy; Won MiSook | Zendy; Shim YoonBo | Zendy

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An All Solid State Potentiometric Sensor for Monohydrogen Phosphate Ions

Author(s) -

Kumar Pankaj,

Kim DongMin,

Hyun Myung Ho,

Won MiSook,

Shim YoonBo

Publication year - 2013

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201300142

Subject(s) - potentiometric titration , thiourea , chemistry , selectivity , phosphate , inorganic chemistry , ionophore , ion , nuclear chemistry , chloride , potentiometric sensor , barium chloride , titration , organic chemistry , calcium , catalysis

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 HPO 4 2− 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 HPO 4 2− >SO 4 2− >Cl − >NO 3 − >OAc − >I − >ClO 4 − . 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.

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