Hydrogen peroxide vapour indicator


Autoria(s): Mills, Andrew; Grosshans, P.; Snadden, E.
Data(s)

2009

Resumo

A hydrogen peroxide vapour indicator is described comprising a triarylmethane dye, lissamine green (LG), dissolved in a polymer, polyvinyl alcohol (PVA). The indicator is green/blue in the absence of hydrogen peroxide vapour but is rapidly bleached in the presence of hydrogen peroxide vapour. The kinetics of LG bleaching appear approximately first order with respect [LG] and the concentration of H2O2, which, in turn, is proportional to the partial pressure of H2O2. However, the kinetics also appear to depend directly upon the reciprocal of the film thickness, implying some dependence upon the diffusion of the H2O2 vapour through the indicator film. Like most other H2O2 indicator films (such as starch-iodide paper), the LG/PVA indicator is not particularly selective and responds to most other volatile strong oxidising agents, such as ozone and chlorine. However, it is rapid in response (

Identificador

http://pure.qub.ac.uk/portal/en/publications/hydrogen-peroxide-vapour-indicator(bc064d9a-b5ee-470d-ac86-43d51880a9f2).html

http://dx.doi.org/10.1016/j.snb.2008.12.032

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Mills , A , Grosshans , P & Snadden , E 2009 , ' Hydrogen peroxide vapour indicator ' SENSORS AND ACTUATORS B-CHEMICAL , vol 136 , no. 2 , pp. 458-463 . DOI: 10.1016/j.snb.2008.12.032

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/2200/2208 #Electrical and Electronic Engineering #/dk/atira/pure/subjectarea/asjc/2500/2504 #Electronic, Optical and Magnetic Materials #/dk/atira/pure/subjectarea/asjc/2500/2505 #Materials Chemistry #/dk/atira/pure/subjectarea/asjc/2500/2506 #Metals and Alloys #/dk/atira/pure/subjectarea/asjc/2500/2508 #Surfaces, Coatings and Films #/dk/atira/pure/subjectarea/asjc/3100/3104 #Condensed Matter Physics #/dk/atira/pure/subjectarea/asjc/3100/3105 #Instrumentation
Tipo

article