Hydrogen Sulphide (H2S)
Hydrogen sulphide (H2S) is a colourless gas with a strong odour resembling rotten eggs. Due to its higher density than air, it can accumulate in low-lying areas under still conditions. People are commonly exposed to hydrogen sulphide through inhalation or contact with the skin and eyes. Fortunately, absorbed hydrogen sulphide does not accumulate in the body, as it is quickly metabolised in the liver and excreted through urine. In the atmosphere, it typically breaks down within three days and is dispersed by wind.
Reducing exposure to hydrogen sulphide (H2S) and managing emissions
To minimise exposure to hydrogen sulphide (H2S), precautions should be taken if its odour is strong or poses a risk to health and well-being. It is advisable to avoid areas where the gas is known to be present and to keep windows closed when the odour is noticeable outdoors. Ventilation should only be restored once the smell has dissipated. Additionally, outdoor physical activity should be limited during periods of high hydrogen sulphide concentration, particularly when exertion increases the breathing rate. If human activities, such as industrial processes, are the source of the gas, appropriate measures like containment and filtration systems can help manage emissions effectively.
Water contamination and treatment solutions
When bore water is contaminated with hydrogen sulphide (H2S), treatment options may be available to mitigate its effects. One common method involves using a chemical agent that removes iron from the water, thereby disrupting bacterial activity responsible for producing the gas. Water treatment companies can provide guidance on suitable treatments. If hydrogen sulphide-contaminated water is used for irrigation, it may release significant amounts of gas into the air. To reduce odour emissions, strategies such as using less water, employing low-to-the-ground delivery methods with larger droplets, and irrigating when there is enough wind to disperse the smell can be implemented. Additionally, watering at night, when fewer people are around, may help minimise the impact.
CAS-Number: 7783-06-4.
Monitoring hydrogen sulphide (H2S) with our equipment
To ensure safety in environments where hydrogen sulphide (H2S) is present, the use of reliable gas detection equipment is essential. WatchGas offers a range of H2S gas detectors designed to provide early warnings of hazardous concentrations. These detectors are widely used in industries such as oil and gas, wastewater treatment and mining, where exposure to hydrogen sulphide (H2S) is a significant risk. With advanced sensor technology, our products provide accurate real-time readings and can be configured with alarms to alert workers when gas levels exceed safe limits.
Reach out to us for advice
Hydrogen sulphide (H2S) is a potentially harmful gas that requires careful management to reduce exposure and prevent health hazards. Whether through avoiding contaminated areas, implementing emission controls or using our gas detectors, various measures can help mitigate its risks. Contact our team today for expert advice on hydrogen sulphide (H2S) detection and safety solutions.
Compatible products

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Low costs of Ownership
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Single gas
UNI Disposable 
The UNI Disposable is a disposable and low cost of ownership, version of UNI Sustainable single gas detector. It detects H2S (Hydrogen Sulphide), CO (Carbon Monoxide), and O2 (Oxygen) in your selection of models for operation life of 12-months and 36-months.

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Wide range of sensors
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Versatile
XDI 
The XDI-F1 Gas Sensor is capable of utilizing a wide range of sensor cell types offering an unmatched number of gases that may be monitored. Standard 4~20mA signaling with CANbus address enables the sensors to be networked via the WatchGas Combi control system or customer preferred monitoring systems.