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AuthorAlmeer, Saeed H.M.A
AuthorZogby, Ibrahim A.
AuthorHassan, Saad S.M.
Available date2017-03-27T10:52:29Z
Publication Date2014-11-01
Publication NameTalanta
Identifierhttp://dx.doi.org/10.1016/j.talanta.2014.05.019
CitationAlmeer, S. H.M.A., A. Zogby, I. and Hassan, S. S.M. (2014) “Novel miniaturized sensors for potentiometric batch and flow-injection analysis (FIA) of perchlorate in fireworks and propellants” Talanta, Vol.129, pp. 191-197.
ISSN0039-9140
URIhttp://www.sciencedirect.com/science/article/pii/S0039914014003944
URIhttp://hdl.handle.net/10576/5412
AbstractThree planar miniaturized perchlorate membrane sensors (3×5mm2) are prepared using a flexible Kaptan substrate coated with nitron-perchlorate (NT-ClO4) [sensor 1], methylene blue-perchlorate (MB-ClO4) [sensor II] and indium-porphyrin (In-Por) [sensor III] as electroactive materials in PVC membranes plasticized with 2-NPPE. Sensors I, II and III display near-Nernstian response for 1.0×10−5–1.0×10−2, 3.1×10−5–1.0×10−2 and 3.1×10−6–1.0×10−2molL−1ClO4− with lower detection limits of 6.1×10−6, 6.9×10−6 and 1.2×10−6molL−1, and anionic calibration slopes of 50.9±0.4, 48.4±0.4 and 57.7±0.3mV decade−1, respectively. Methods for determining perchlorate using these sensors offer many attractive advantages including simplicity, flexibility, cost effectiveness, wide linear dynamic response range (0.1–1000ppm), low detection limit (<1.2×10−6molL−1≡0.1ppm), small sample test volume (100μL), safety, short response time (<20s), long life span (~8 weeks), and extended wide working pH range (4.5–8.0). The sensors show high selectivity in the presence of some inorganic ions (e.g., PO43−, SO42−, S2O32−, NO2−, NO3−, N3−, CN−, Cl−, Br−, I−) and automation feasibility. Indium-porphyrin based membrane sensor (sensor III) is used as a detector in a wall-jet flow injection set-up to enable accurate flow injection analysis (FIA) of perchlorate in some fireworks without interferences from the associated reducing agents (sulfur and charcoal), binders (dextrin, lactose), coloring agents (calcium, strontium, copper, iron, sodium), color brighten (linseed oil) and regulators (aluminum flakes) which are commonly used in the formulations. The sensor is also used for perchlorate assessment in some propellant powders. The results fairly agree with data obtained by ion-chromatography.
Languageen
PublisherElsevier B.V.
SubjectMiniaturized planar sensors
Perchlorate
Potentiometry
Indium-porphyrin
Nitron
Methylene blue
Fireworks
Propellants
PVC membrane
Flow-injection analysis
TitleNovel miniaturized sensors for potentiometric batch and flow-injection analysis (FIA) of perchlorate in fireworks and propellants
TypeArticle
Pagination191–197
Volume Number129
ESSN1873-3573
dc.accessType Abstract Only


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