In situ monitoring of pH level with fiber optic evanescent field spectroscopy

Masoud Ghandehari; Cristian S. Vimer

doi:10.1016/j.ndteint.2004.03.007

In situ monitoring of pH level with fiber optic evanescent field spectroscopy

Research output: Contribution to journal › Article › peer-review

Abstract

Fiber optic evanescent field spectroscopy for in situ monitoring of pH levels is presented. Cladding of plastic clad silica fiber is replaced with polymethyl methacrylate doped with pH sensitive chromoionophores. The chromoionophores include methyl red, thymol blue, and thymolphtalein for pH in acidic, neutral and basic environments, respectively. The evanescent wave is used to selectively excite the indicator molecules within the fiber cladding for sampling aqueous media surrounding the fiber.

Original language	English (US)
Pages (from-to)	611-616
Number of pages	6
Journal	NDT and E International
Volume	37
Issue number	8
DOIs	https://doi.org/10.1016/j.ndteint.2004.03.007
State	Published - Dec 2004

Keywords

Concrete durability
Corrosion sensing
Infrastructure monitoring
Materials health monitoring
Optical fiber sensors

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1016/j.ndteint.2004.03.007

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title = "In situ monitoring of pH level with fiber optic evanescent field spectroscopy",

abstract = "Fiber optic evanescent field spectroscopy for in situ monitoring of pH levels is presented. Cladding of plastic clad silica fiber is replaced with polymethyl methacrylate doped with pH sensitive chromoionophores. The chromoionophores include methyl red, thymol blue, and thymolphtalein for pH in acidic, neutral and basic environments, respectively. The evanescent wave is used to selectively excite the indicator molecules within the fiber cladding for sampling aqueous media surrounding the fiber.",

keywords = "Concrete durability, Corrosion sensing, Infrastructure monitoring, Materials health monitoring, Optical fiber sensors",

author = "Masoud Ghandehari and Vimer, {Cristian S.}",

note = "Funding Information: Support from the National Science Foundation is gratefully acknowledged.",

year = "2004",

month = dec,

doi = "10.1016/j.ndteint.2004.03.007",

language = "English (US)",

volume = "37",

pages = "611--616",

journal = "NDT and E International",

issn = "0963-8695",

publisher = "Elsevier Limited",

number = "8",

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TY - JOUR

T1 - In situ monitoring of pH level with fiber optic evanescent field spectroscopy

AU - Ghandehari, Masoud

AU - Vimer, Cristian S.

N1 - Funding Information: Support from the National Science Foundation is gratefully acknowledged.

PY - 2004/12

Y1 - 2004/12

N2 - Fiber optic evanescent field spectroscopy for in situ monitoring of pH levels is presented. Cladding of plastic clad silica fiber is replaced with polymethyl methacrylate doped with pH sensitive chromoionophores. The chromoionophores include methyl red, thymol blue, and thymolphtalein for pH in acidic, neutral and basic environments, respectively. The evanescent wave is used to selectively excite the indicator molecules within the fiber cladding for sampling aqueous media surrounding the fiber.

AB - Fiber optic evanescent field spectroscopy for in situ monitoring of pH levels is presented. Cladding of plastic clad silica fiber is replaced with polymethyl methacrylate doped with pH sensitive chromoionophores. The chromoionophores include methyl red, thymol blue, and thymolphtalein for pH in acidic, neutral and basic environments, respectively. The evanescent wave is used to selectively excite the indicator molecules within the fiber cladding for sampling aqueous media surrounding the fiber.

KW - Concrete durability

KW - Corrosion sensing

KW - Infrastructure monitoring

KW - Materials health monitoring

KW - Optical fiber sensors

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U2 - 10.1016/j.ndteint.2004.03.007

DO - 10.1016/j.ndteint.2004.03.007

M3 - Article

AN - SCOPUS:3042818488

SN - 0963-8695

VL - 37

SP - 611

EP - 616

JO - NDT and E International

JF - NDT and E International

IS - 8

ER -

In situ monitoring of pH level with fiber optic evanescent field spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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