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Definition of hydrogen sulphide in English: hydrogen sulphide(also hydrogen sulfide) noun mass nounChemistry A colourless poisonous gas with a smell of bad eggs, made by the action of acids on sulphides. Chemical formula: H₂S Example sentencesExamples - Seep output includes natural gas, carbon dioxide, nitrogen, hydrogen sulfide, other gases and oil.
- The gas component may be ethane, propane, butane, carbon dioxide, or hydrogen sulphide, but is most commonly methane.
- Several other gases are known to combine with water to form gas hydrates, including carbon dioxide and hydrogen sulphide, but by far the most common in marine sediments are methane hydrates.
- The four usual agents of deterioration in the air apart from oxygen and water are sulphur dioxide, hydrogen sulphide, ozone and nitrogen dioxide.
- Increased concentrations of carbon dioxide and hydrogen sulfide were detected in the air, signs of fresh magma rising.
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