A Sensitive Formaldehyde Sensor Based on Cataluminescence Coupled with Thermal Desorption

Hong Wei Yang; Zheng Xing; Kao Wen Zhou

doi:10.4028/www.scientific.net/AMM.670-671.1163

Paper Titles

Study on Mechanical State Diagnosis of Power Transformer Winding Based on Vibration Method
p.1140

Analysis of a Seismic Performance on K8 Triangular Cone Partial Double Layer Spherical Reticulated Shell
p.1145

A Flextensional Transducer Prototype with PVDF Piezoelectric Film
p.1153

A Low Noise Power Design for Electrical Impedance Tomography System
p.1159

A Sensitive Formaldehyde Sensor Based on Cataluminescence Coupled with Thermal Desorption
p.1163

Inverse Identification of Nonlinear Boundary for a Pile Using Time Domain Multi-Point Approximations Method
p.1167

Method on Fault Detection and Diagnosis for Track Circuit Based on Main Rail Voltage
p.1172

Power System Fault Diagnosis Method Summary
p.1179

Random Sampling Approaches for Implementation of FPGA in Signal Processing
p.1184

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 670-671A Sensitive Formaldehyde Sensor Based on...

A Sensitive Formaldehyde Sensor Based on Cataluminescence Coupled with Thermal Desorption

Abstract:

A sensitive cataluminescence-based detecting technology using nanosized Mo₄V₆Ti₁₀O₄₇ as a probe was proposed for determination of formaldehyde in air. Trace formaldehyde was firstly absorbed on active carbon at room temperature to concentrate, then desorbed at 75°C to determine. The method showed high selectivity to formaldehyde at wavelength of 575nm, satisfying activity at temperature of 260°C and good stability at carrier flow rate of 145 ml/min. The linear range of CTL intensity versus concentration of formaldehyde was 0.04~78 mg/m³, and the detection limit (3σ) was 0.02 mg/m³. The recovery of artificial sample was 96.8%-103.4% by this method. There was no response to CO, CO₂, SO₂, NH₃, methanol, ethanol, benzene, toluene and xylenes.