Sol–gel based optical carbon dioxide sensor employing dual luminophore referencing for application in food packaging technology

von Bueltzingsloewen, C. ; McEnvoy, A. K. ; McDonagh, C. ; MacCraith, B. D. ; Klimant, I. ; Krause, C. ; Wolfbeis, Otto S.

PDF (148kB) - Repository staff only

Date of publication of this fulltext: 15 Apr 2011 08:42

---

Alternative links to fulltext:DOI

---

Details

Item type:	Article
Journal or Publication Title:	The analyst
Publisher:	The Royal Society of Chemistry
Volume:	127
Number of Issue or Book Chapter:	11
Page Range:	pp. 1478-1483
Date:	2002
Institutions:	Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis)
Identification Number:	Value Type 10.1039/B207438A DOI
Dewey Decimal Classification:	500 Science > 540 Chemistry & allied sciences
Status:	Published
Refereed:	Unknown
Created at the University of Regensburg:	Unknown
Item ID:	20434

Export bibliographical data

ASCII CitationAtomBibTeXData Cite XMLDataCite XML OAIDublin CoreEndNoteHTML CitationMETSMODSOpenAPCRDF+N-TriplesRDF+N3RDF+XMLReferReference ManagerSimple MetadataXMLxMetaDissPlus

---

Abstract

An optical sensor for the measurement of carbon dioxide in Modified Atmosphere Packaging (MAP) applications has been developed. It is based on the fluorescent pH indicator 1-hydroxypyrene-3,6,8-trisulfonate (HPTS) immobilised in a hydrophobic organically modified silica (ormosil) matrix. Cetyltrimethylammonium hydroxide was used as an internal buffer system. Fluorescence is measured in the phase ...

Abstract

An optical sensor for the measurement of carbon dioxide in Modified Atmosphere Packaging (MAP) applications has been developed. It is based on the fluorescent pH indicator 1-hydroxypyrene-3,6,8-trisulfonate (HPTS) immobilised in a hydrophobic organically modified silica (ormosil) matrix. Cetyltrimethylammonium hydroxide was used as an internal buffer system. Fluorescence is measured in the phase domain by means of the Dual Luminophore Referencing (DLR) sensing scheme which provides many of the advantages of lifetime-based fluorometric sensors and makes it compatible with established optical oxygen sensor technology. The long-term stability of the sensor membranes has been investigated. The sensor displays 13.5 degrees phase shift between 0 and 100% CO2 with a resolution of better than 1% and a limit of detection of 0.08%. Oxygen cross-sensitivity is minimised (0.6% quenching in air) by immobilising the reference luminophore in polymer nano-beads. Cross-sensitivity towards chloride and pH was found to be negligible. Temperature effects were studied, and a linear Arrhenius correlation between ln k and 1/T was found. The sensor is stable over a period of at least seven months and its output is in excellent agreement with a standard reference method for carbon dioxide analysis.

---

---

Metadata last modified: 03 Jun 2018 05:06

Owner only: item control page

Download Statistics

Download Statistics

Download Statistics

Download Statistics

Downloads

Downloads per month over past year

Altmetric

Altmetric

Altmetric

Alternative Statistics (altmetrics)

More literature (via CORE)

More literature (via CORE)

More literature (via CORE)

More literature (via CORE)