Simple spectrophotometry method for the determination of sulfur dioxide in an alcohol-thionyl chloride reaction

Fabrication and application of a 3D-rGO electrochemical sensor for SO2 detection in ionic liquids

“…At present, the main detection methods of SO 2 include ion chromatography, 6 differential absorption spectrometry, 7 spectrophotometry 8 and fluorescence 9 methods. These methods have the advantages of accuracy and cheapness, while they have the disadvantages of complicated pretreatment and time consumption.…”

Zr‐MOF Combined with Nanofibers as an Efficient and Flexible Capacitive Sensor for Detecting SO2

“…Undoubtedly, it is urgently significant to continuously detect the concentration of SO 2 in surroundings, particularly around emission sources. [3] Chemical gas sensors with simple operation, short response time and superior sensitivity have been greatly applied in different applications, including the chemical industry, [4,5] environmental monitoring [6,7] and domestic alarms. [8,9] Many researches have investigated various chemical SO 2 sensors and the gas-sensing materials of developed sensors are mainly semiconducting metal oxide, [10][11][12][13][14] solid-liquid electrolyte [15] as well as conducting polymers.…”

“…[16,17] Depending on the different sensing materials and various fabrication, the mechanism of these sensors can vary greatly. For example, the sensing principle of metal oxide semiconductor (e. g. ZnO, [14,18] SnO 2 , [13,19] WO 3 and TiO 2 [20] ) is based on the change of resistance when the targeted gas reacts with the adsorbed surface oxygen. By contrast, the dielectric constant would vary after absorbing or reacting with detected gas, subsequently the capacitance changing for the capacitive sensors.…”

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La2WO6 Nanoparticles

“…There are many methods to measure sulfur dioxide in the laboratory, such as spectrophotometry, colorimetry, titration, electrochemistry, chromatography, atomic fluorescence, mass spectrometry, chemiluminescence (CL), absorption spectrometry, and so on. Operating the methods above is very complicated since they require not only collection and preparation of samples, but also large‐scale analytical instruments.…”