Real-time methods of hydrogen sulfide detection

Abstract

A comparative analytical review of existing methods and means of measuring hydrogen sulfide content in gasses was performed. The method of infrared laser absorption spectroscopy, which uses semiconductor diode lasers tunable in the mid-infrared range as emission sources, is proving to be one of the most promising methods for solving these problems.

Hydrogen Sulphide Sequestration with Metallic Ions in Acidic Media Based on Chitosan/sEPDM/Polypropylene Composites Hollow Fiber Membranes System

“…The membranes used for the removal, separation, concentration, analysis, and valorization of hydrogen sulfide are based on ionic polymers [ 37 , 38 ], biopolymers [ 39 , 40 ], organic [ 41 ], or inorganic composites [ 42 ]. Among the ionic polymers, sulfonated polyether ether ketone and sulfonated ethylene–propylene–diene terpolymer (sEPDM) are used [ 43 ], while among biopolymers, chitosan (Chi) is of particular interest, because it covers various membrane separations and spans the membranes for sensors [ 44 , 45 , 46 , 47 , 48 , 49 , 50 ].…”

Application of TDLAS for measuring absorption coefficients of H2S rotational absorption lines near the wavelength of 2 µm

“…As noted in our previous papers [1,2], the objective of developing a method for real-time detection of hydrogen sulfide (H 2 S) in gaseous media (in man-made emissions of industrial enterprises, in residential areas) is an important practical problem, in particular, for the gas, food industry, agriculture, environmental monitoring, etc. This is due to the fact that, being a highly dangerous toxic substance [3], hydrogen sulfide, when ingested into the human body, can cause pulmonary edema with the subsequent development of paralysis.…”

“…A comparative analysis of the currently existing H 2 S detectors conducted in [1,9] showed that the most common among them are semiconductor and electrochemical gas analyzers. These gas analyzers have both unquestionable advantages (high sensitivity, above all) and disadvantages, the main of which are limited selectivity, a noticeable effect on the measurement accuracy of external conditions, such as humidity, etc.…”

Detection of PPB-Level H2S Concentrations in Exhaled Breath Using Au Nanosheet Sensors with Small Variability, High Selectivity, and Long-Term Stability

“…Various types of H 2 S sensors have been proposed and used to address these requirements. 13,14 The most common H 2 S sensors are based on semiconducting metal oxides; they have low costs and are operated rapidly and easily. 15−17 However, metal oxide semiconductor (MOS) gas sensors typically have poor selectivity because they react to all reducing or oxidizing gases.…”

“…Various types of H 2 S sensors have been proposed and used to address these requirements. , The most common H 2 S sensors are based on semiconducting metal oxides; they have low costs and are operated rapidly and easily. − However, metal oxide semiconductor (MOS) gas sensors typically have poor selectivity because they react to all reducing or oxidizing gases. , Electrochemical sensors are also commercialized, but they are less sensitive than MOS gas sensors and susceptible to temperature and humidity changes. , Other types of H 2 S sensors have been proposed, such as colorimetric sensors, surface acoustic wave gas sensors, and sensors made using conductive materials (e.g., graphenes and polymers). , However, these sensors are hindered by challenges related to selectivity or ppb-level detection. Decorating conducting materials, such as MOS, , graphenes, and carbon nanotubes (CNTs), with metal and MOS nanoparticles (NPs) has recently been used to achieve sensor selectivity and ppb-level detection.…”