Potassium ion-selective optodes based on the Calix[6]arene hexaester and application in human serum assay

Wing Hong CHAN; Albert W M LEE; Daniel W J KWONG; Wing Leong Tam; Ke Min Wang

doi:10.1039/an9962100531

Potassium ion-selective optodes based on the Calix[6]arene hexaester and application in human serum assay

Wing Hong CHAN^*, Albert W M LEE, Daniel W J KWONG, Wing Leong Tam, Ke Min Wang

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

11 Citations (Scopus)

Abstract

Plasticized PVC membranes incorporating the hexaester of calix[6]arene, potassium tetrakis (4-chlorophenyl) borate and a neutral H⁺-selective chromo-ionophore (ETH 5294) have been used as reversible sensing devices for optical determination of potassium ion in pH-buffer solutions. At pH 9.0, the absorbance response of the optode shows a good correlation with the theoretically derived formula in the range from 1 x 10^-6 to 1 x 10^-2 mol l^-1 potassium ion. Typical response times (t₉₅) in the samples are 3 min, the relative standard deviation for repeated measurements being within 0.5%. The selectivity of this potassium-selective membrane allows its application for the reversible optical detection of potassium concentration in human serum samples.

Original language	English
Pages (from-to)	531-534
Number of pages	4
Journal	Analyst
Volume	121
Issue number	4
DOIs	https://doi.org/10.1039/an9962100531
Publication status	Published - Apr 1996

Scopus Subject Areas

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy
Electrochemistry

User-Defined Keywords

Calixarene ionophore
Ion-selective membrane
Optode membrane
Potassium concentration in serum
Potassium determination

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10.1039/an9962100531

Cite this

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title = "Potassium ion-selective optodes based on the Calix[6]arene hexaester and application in human serum assay",

abstract = "Plasticized PVC membranes incorporating the hexaester of calix[6]arene, potassium tetrakis (4-chlorophenyl) borate and a neutral H+-selective chromo-ionophore (ETH 5294) have been used as reversible sensing devices for optical determination of potassium ion in pH-buffer solutions. At pH 9.0, the absorbance response of the optode shows a good correlation with the theoretically derived formula in the range from 1 x 10-6 to 1 x 10-2 mol l-1 potassium ion. Typical response times (t95) in the samples are 3 min, the relative standard deviation for repeated measurements being within 0.5%. The selectivity of this potassium-selective membrane allows its application for the reversible optical detection of potassium concentration in human serum samples.",

keywords = "Calixarene ionophore, Ion-selective membrane, Optode membrane, Potassium concentration in serum, Potassium determination",

author = "CHAN, {Wing Hong} and LEE, {Albert W M} and KWONG, {Daniel W J} and Tam, {Wing Leong} and Wang, {Ke Min}",

year = "1996",

month = apr,

doi = "10.1039/an9962100531",

language = "English",

volume = "121",

pages = "531--534",

journal = "Analyst",

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publisher = "Royal Society of Chemistry",

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T1 - Potassium ion-selective optodes based on the Calix[6]arene hexaester and application in human serum assay

AU - CHAN, Wing Hong

AU - LEE, Albert W M

AU - KWONG, Daniel W J

AU - Tam, Wing Leong

AU - Wang, Ke Min

PY - 1996/4

Y1 - 1996/4

N2 - Plasticized PVC membranes incorporating the hexaester of calix[6]arene, potassium tetrakis (4-chlorophenyl) borate and a neutral H+-selective chromo-ionophore (ETH 5294) have been used as reversible sensing devices for optical determination of potassium ion in pH-buffer solutions. At pH 9.0, the absorbance response of the optode shows a good correlation with the theoretically derived formula in the range from 1 x 10-6 to 1 x 10-2 mol l-1 potassium ion. Typical response times (t95) in the samples are 3 min, the relative standard deviation for repeated measurements being within 0.5%. The selectivity of this potassium-selective membrane allows its application for the reversible optical detection of potassium concentration in human serum samples.

AB - Plasticized PVC membranes incorporating the hexaester of calix[6]arene, potassium tetrakis (4-chlorophenyl) borate and a neutral H+-selective chromo-ionophore (ETH 5294) have been used as reversible sensing devices for optical determination of potassium ion in pH-buffer solutions. At pH 9.0, the absorbance response of the optode shows a good correlation with the theoretically derived formula in the range from 1 x 10-6 to 1 x 10-2 mol l-1 potassium ion. Typical response times (t95) in the samples are 3 min, the relative standard deviation for repeated measurements being within 0.5%. The selectivity of this potassium-selective membrane allows its application for the reversible optical detection of potassium concentration in human serum samples.

KW - Calixarene ionophore

KW - Ion-selective membrane

KW - Optode membrane

KW - Potassium concentration in serum

KW - Potassium determination

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U2 - 10.1039/an9962100531

DO - 10.1039/an9962100531

M3 - Journal article

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SN - 0003-2654

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JF - Analyst

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Potassium ion-selective optodes based on the Calix[6]arene hexaester and application in human serum assay

Abstract

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