TY - JOUR
T1 - Polymethacrylate optodes
T2 - A potential for chemical digital color analysis
AU - Gavrilenko, Nataliya Airatovna
AU - Muravyov, Sergey V.
AU - Silushkin, Stanislav Vladimirovich
AU - Spiridonova, Anna S.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The paper describes results of implementing a new kind of optical analytical method, digital color analysis (DCA), in which colorimetric polymethacrylate sensors (optodes) are used. The optodes are made of optically transparent polymethacrylate matrix with physically immobilized analytical reagent which is responsible for the extraction of the analyte into the sensing material and changing its color. The developed optodes can be used in determination of various analytes using both solid-phase spectrophotometer and naked eye. In order to improve accuracy and sensitivity of the naked-eye determination, it is possible to measure visible color changes using digital imaging of the polymethacrylate optode. The digital images then can be represented as basic color (e.g. RGB) data. The DCA determinations of Cu (II), Ag (I) and Co (II) have indicated that the developed optodes are linear in concentration ranges 0.02-0.30; 0.02-0.20 and 0.05-0.25 mg L-1 appropriately with corresponding practical detection limits of 0.01; 0.02 and 0.07 mg L-1.
AB - The paper describes results of implementing a new kind of optical analytical method, digital color analysis (DCA), in which colorimetric polymethacrylate sensors (optodes) are used. The optodes are made of optically transparent polymethacrylate matrix with physically immobilized analytical reagent which is responsible for the extraction of the analyte into the sensing material and changing its color. The developed optodes can be used in determination of various analytes using both solid-phase spectrophotometer and naked eye. In order to improve accuracy and sensitivity of the naked-eye determination, it is possible to measure visible color changes using digital imaging of the polymethacrylate optode. The digital images then can be represented as basic color (e.g. RGB) data. The DCA determinations of Cu (II), Ag (I) and Co (II) have indicated that the developed optodes are linear in concentration ranges 0.02-0.30; 0.02-0.20 and 0.05-0.25 mg L-1 appropriately with corresponding practical detection limits of 0.01; 0.02 and 0.07 mg L-1.
KW - Analytical method
KW - Colorimetric sensor
KW - Digital color analysis
KW - Immobilized reagents
KW - Transparent polymeric matrix
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U2 - 10.1016/j.measurement.2013.11.027
DO - 10.1016/j.measurement.2013.11.027
M3 - Article
AN - SCOPUS:84899435215
VL - 51
SP - 464
EP - 469
JO - Industrial Metrology
JF - Industrial Metrology
SN - 1536-6367
IS - 1
ER -