Enhancing the Sensitivity of Chemical Sensors for Chlorinated Hydrocarbons in Water by the Use of Tapered Silver Halide Fibers and Tunable Diode Lasers

Roman Göbel; Rudolf Krska; Robert Kellner; Joachim Kastner; Armin Lambrecht; Maurus Tacke; Abraham Katzir

doi:10.1366/0003702953965119

Enhancing the Sensitivity of Chemical Sensors for Chlorinated Hydrocarbons in Water by the Use of Tapered Silver Halide Fibers and Tunable Diode Lasers

Roman Göbel^*, Rudolf Krska, Robert Kellner, Joachim Kastner, Armin Lambrecht, Maurus Tacke, Abraham Katzir

^*Corresponding author for this work

School of Physics and Astronomy

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

37 Scopus citations

Abstract

Tapered silver halide fibers were used for the first time for high-sensitivity fiber evanescent wave spectroscopic (FEWS) measurements of chlorinated hydrocarbons (CHCs) in water at trace level. The sensor arrangement consisted of a tunable diode laser (TDL) source, a polymer-coated and tapered silver halide fiber, and a direct fiber/mercury cadmium telluride (MCT) detector coupling. A minimum detection limit of 50 μg L⁻¹ was achieved by using a polyisobutylene-coated fiber with a 1:4 tapering ratio. The sensor response is in the minute range and shows reversible analyte enrichment.

Original language	English
Pages (from-to)	1174-1177
Number of pages	4
Journal	Applied Spectroscopy
Volume	49
Issue number	8
DOIs	https://doi.org/10.1366/0003702953965119
State	Published - Aug 1995

Keywords

Chemical sensor
Chlorinated hydrocarbons
Fiber evanescent wave spectroscopy (FEWS)
Tapered fibers
Tunable diode laser (TDL)

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10.1366/0003702953965119

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title = "Enhancing the Sensitivity of Chemical Sensors for Chlorinated Hydrocarbons in Water by the Use of Tapered Silver Halide Fibers and Tunable Diode Lasers",

abstract = "Tapered silver halide fibers were used for the first time for high-sensitivity fiber evanescent wave spectroscopic (FEWS) measurements of chlorinated hydrocarbons (CHCs) in water at trace level. The sensor arrangement consisted of a tunable diode laser (TDL) source, a polymer-coated and tapered silver halide fiber, and a direct fiber/mercury cadmium telluride (MCT) detector coupling. A minimum detection limit of 50 μg L−1 was achieved by using a polyisobutylene-coated fiber with a 1:4 tapering ratio. The sensor response is in the minute range and shows reversible analyte enrichment.",

keywords = "Chemical sensor, Chlorinated hydrocarbons, Fiber evanescent wave spectroscopy (FEWS), Tapered fibers, Tunable diode laser (TDL)",

author = "Roman G{\"o}bel and Rudolf Krska and Robert Kellner and Joachim Kastner and Armin Lambrecht and Maurus Tacke and Abraham Katzir",

note = "Publisher Copyright: {\textcopyright} 1995 Society for Applied Spectroscopy.",

year = "1995",

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doi = "10.1366/0003702953965119",

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AU - Kellner, Robert

AU - Kastner, Joachim

AU - Lambrecht, Armin

AU - Tacke, Maurus

AU - Katzir, Abraham

PY - 1995/8

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AB - Tapered silver halide fibers were used for the first time for high-sensitivity fiber evanescent wave spectroscopic (FEWS) measurements of chlorinated hydrocarbons (CHCs) in water at trace level. The sensor arrangement consisted of a tunable diode laser (TDL) source, a polymer-coated and tapered silver halide fiber, and a direct fiber/mercury cadmium telluride (MCT) detector coupling. A minimum detection limit of 50 μg L−1 was achieved by using a polyisobutylene-coated fiber with a 1:4 tapering ratio. The sensor response is in the minute range and shows reversible analyte enrichment.

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Enhancing the Sensitivity of Chemical Sensors for Chlorinated Hydrocarbons in Water by the Use of Tapered Silver Halide Fibers and Tunable Diode Lasers

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Keywords

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