Development and optimization of a mid-infrared hollow waveguide gas sensor combined with a supported capillary membrane sampler

被引：17

作者：

de Melas, F

Pustogov, VV

Croitoru, N

Mizaikoff, B ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

[2] Vienna Univ Technol, Inst Analyt Chem, A-1060 Vienna, Austria

[3] Tel Aviv Univ, Dept Elect Engn & Phys Elect, IL-69978 Tel Aviv, Israel

来源：

APPLIED SPECTROSCOPY | 2003年 / 57卷 / 06期

关键词：

hollow waveguide; mid-infrared sensors; Fourier transform infrared spectroscopy; FT-IR; membrane sampler; chlorinated hydrocarbons; dioxane; volatile organic compounds; water analysis;

D O I：

10.1366/000370203322005265

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A gas sensor for application in water analysis was developed by combination of a mid-infrared (MIR) hollow waveguide with a Fourier transform infrared (FT-IR) spectrometer and coupling of the hollow waveguide gas sensor module to a supported capillary membrane sampler (SCMS) for continuous liquid-gas extraction. Different hollow waveguides have been characterized in this study for developing an optimized optical configuration. Analysis of industrially relevant compounds has been performed, investigating chlorinated hydrocarbons (CHCs), such as dichloromethane and chloroform, representing highly volatile analytes, and 1,4-dioxane as an example of target compounds with low volatility. The suitability of this spectroscopic IR sensing system for industrial applications is demonstrated under simulated real-world conditions with limits of detection in the ppb (v/v) and ppm (v/v) concentration range for CHCs and 1,4-dioxane, respectively.

引用

页码：600 / 606

页数：7

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