Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10410318 | Sensors and Actuators B: Chemical | 2005 | 10 Pages |
Abstract
The reaction of Cu(dmp)22+ with NO has been investigated for potential development into an optical fibre chemical sensor. In aqueous solutions, a linear calibration (r = 0.9950) was obtained between 0 and 2.5 μM NO with a detection limit of 0.32 μM (â¼0.0096 ppm) (s/n = 3). The complex electrostatically immobilised in nafion produced a highly linear calibration (r = 0.999) between 0 and 3 ppm in NO gas phase with a detection limit of 0.072 ppm (â¼2.38 μM in solution). The response was shown to be fully reversible by immersing the films in hydroxylamine hydrochloride solutions and a steady state response was achieved within 100 s exposure time. The nafion films were also shown to be more selective to NO over O2 (183:1), NO2 (16:1) and CO (795:1). In solution nitrite, H2O2 and peroxynitrite anion did not interfere.
Keywords
ECRDMPNO−DAFNOSiNOSNitric oxide detectionABTSeNOSnNOSendothelial nitric oxide synthasesSGCR.S.D.cNOSManganese (IV) oxideMLCTCCDKO22,9-Dimethyl-1,10-phenanthrolineDMSOO2−ONOO−S.D.Hydrogen peroxidesuperoxide anionNitroxyl anionperoxynitrite anionEDTAEthylenediaminetetraacetic acidDARMetal to ligand charge transferrelative standard deviationstandard deviationEriochrome cyanine REPRAbsorbanceDEANOdiethylamine NONOatediaminofluoresceinDiaminonaphthaleneDimethyl sulfoxideHydroxyl radicalSODinducible nitric oxide synthaseneuronal nitric oxide synthaseconstitutive nitric oxide synthaseNitric oxide sensorSulfanilamidePotassium superoxideSuperoxide dismutaseSoluble guanylate cyclaseelectron paramagnetic resonance spectroscopyMnO2NeddNafionNitric oxidenitric oxide synthaseH2O2Hydroxylamine hydrochlorideDANabsorbance unitssulf
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
H. Dacres, R. Narayanaswamy,