A Laser-Locked Hollow Waveguide Gas Sensor for Simultaneous Measurements of CO2 Isotopologues with High Accuracy, Precision, and Sensitivity

2021 ◽  
Author(s):  
Yang Liu ◽  
Tao Wu ◽  
Qiang Wu ◽  
Weidong Chen ◽  
Chenwen Ye ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Accuracy ◽  
Hollow Waveguide ◽  
Simultaneous Measurements

scholarly journals Compact Hollow Waveguide Mid-Infrared Gas Sensor For Simultaneous Measurements of Ambient CO2 and Water Vapor

2020 ◽  
Vol 38 (16) ◽  
pp. 4580-4587
Author(s):  
Tao Wu ◽  
Weiping Kong ◽  
Mengyu Wang ◽  
Qiang Wu ◽  
Weidong Chen ◽  
...  
Keyword(s):  
Water Vapor ◽  
Gas Sensor ◽  
Hollow Waveguide ◽  
Mid Infrared ◽  
Simultaneous Measurements ◽  
Ambient Co2

scholarly journals iHEART: a miniaturized near-infrared in-line gas sensor using heart-shaped substrate-integrated hollow waveguides

The Analyst ◽  
2016 ◽  
Vol 141 (18) ◽  
pp. 5298-5303 ◽  
Author(s):  
Rafael L. Ribessi ◽  
Thiago de A. Neves ◽  
Jarbas J. R. Rohwedder ◽  
Celio Pasquini ◽  
Ivo M. Raimundo ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Near Infrared ◽  
Gas Sensing ◽  
Hollow Waveguide ◽  
Hollow Waveguides ◽  
Sensing System

Integration of a heart-shaped substrate-integrated hollow waveguide with a micro-spectrometer results in an ultra-compact gas sensing system: iHEART.

Design of Multi-Parameter Environmental Monitoring Instrument Based on Labview

2013 ◽  
Vol 433-435 ◽  
pp. 519-526
Author(s):  
Chun Fen Guo ◽  
A Ying Wei ◽  
Xue Zhen Cheng
Keyword(s):  
Environmental Monitoring ◽  
Single Crystal ◽  
Gas Sensor ◽  
Small Volume ◽  
High Sensitivity ◽  
High Accuracy ◽  
Signal Acquisition ◽  
Price Ratio ◽  
Serial Port ◽  
Monitoring Instrument

For instrument multifunction, this article introduces a new multi-parameter environmental monitoring instrument. This article chooses the electrochemistry gas sensor as signal acquisition element which has the characteristics of small volume, high sensitivity. Using a single crystal designed as PM2.5 detection module. It can measure SO2NO2COH2S and PM2.5 meanwhile. It simply and exactly achieved the measurement of every parameter by designing related circuits. The communication between computer and Labview was realized by serial port. This instrument has high accuracy, small volume, and higher performance price ratio and so on.

scholarly journals Hollow Waveguide Gas Sensor for Mid-Infrared Trace Gas Analysis

2007 ◽  
Author(s):  
Seong-Soo Kim ◽  
Christina Young ◽  
James Chan ◽  
Chance Carter ◽  
Boris Mizaikoff
Keyword(s):  
Gas Sensor ◽  
Gas Analysis ◽  
Trace Gas ◽  
Hollow Waveguide ◽  
Mid Infrared ◽  
Trace Gas Analysis

scholarly journals Real-Time Monitoring of 13C- and 18O-Isotopes of Human Breath CO2 Using a Mid-Infrared Hollow Waveguide Gas Sensor

2020 ◽  
Vol 92 (19) ◽  
pp. 12943-12949
Author(s):  
Tao Zhou ◽  
Tao Wu ◽  
Qiang Wu ◽  
Weidong Chen ◽  
Mingwei Wu ◽  
...  
Keyword(s):  
Real Time ◽  
Gas Sensor ◽  
Hollow Waveguide ◽  
Real Time Monitoring ◽  
Human Breath ◽  
Mid Infrared ◽  
Breath Co2

scholarly journals Real-time measurement of CO2 isotopologue ratios in exhaled breath by a hollow waveguide based mid-infrared gas sensor

2020 ◽  
Vol 28 (8) ◽  
pp. 10970
Author(s):  
Tao Zhou ◽  
Tao Wu ◽  
Qiang Wu ◽  
Chenwen Ye ◽  
Rongjing Hu ◽  
...  
Keyword(s):  
Real Time ◽  
Gas Sensor ◽  
Time Measurement ◽  
Exhaled Breath ◽  
Hollow Waveguide ◽  
Mid Infrared ◽  
Real Time Measurement

Development and Optimization of a Mid-Infrared Hollow Waveguide Gas Sensor Combined with a Supported Capillary Membrane Sampler

2003 ◽  
Vol 57 (6) ◽  
pp. 600-606 ◽  
Author(s):  
Fabiano De Melas ◽  
Viktor V. Pustogov ◽  
Nathan Croitoru ◽  
Boris Mizaikoff
Keyword(s):  
Gas Sensor ◽  
Industrial Applications ◽  
Hollow Waveguide ◽  
Mid Infrared ◽  
Hollow Waveguides ◽  
Sensing System ◽  
Capillary Membrane ◽  
Sensor Module ◽  
Optical Configuration ◽  
Ft Ir

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.

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