Directive 1999/30/EC on ambient air quality limit values (micrograms per m3) for sulphur dioxide (SO2), nitrogen dioxide, nitrogen oxides (NOx), particulate matter (PM) and lead (Pb)
A method of extending the shelf life of foodstuffs comprises the steps of evacuating gas from the foodstuff and treating the foodstuff with carbon dioxide and sulphur dioxide either in admixture or sequentially.
Soot in the flue gas is collected on the heat exchange elements and adsorbes and/or dissolves gaseous substances such as sulphur dioxide.
A wet washing procedure wherein the reaction products, in the first place the sulphur dioxide which has burned with use of lime, react to become Ca-sulphite.
It allowed the company to recover more elements and produce more useful commerical products from its ores while at the same time reducing its sulphur dioxide emissions.
Sulphur dioxide, which turns into sulphuric acid in a moist environment, lessens the thickness of the profile of the bell and influences its pitch and the tuning of the individual partials.
Catalyst means (34) are preferably provided to convert the sulfur dioxide to an equilibrium mixture of sulfur dioxide and sulfur trioxide near the electrolyte detector electrode surface.
Sulfur dioxide is a bactericide that prevents wine from shifting into vinegar.
The described resists are prepared by the polymerization of an φ-alkenyltrimethylsilane with sulfur dioxide with or without a second solubilizing olefinic compound.
An improved gaseous sulfur dioxide galvanic cell (10) is formed by utilizing a solid electrolyte (12) composed of a mixture of lithium sulfate and silver sulfate.
A process tool (200) for electrochemically treating a substrate (201) is configured to reduce the oxygen concentration and/or the sulfur dioxide concentration in the vicinity of the substrate so that corrosion of copper may be reduced.
Sulfur dioxide would be to wine that which aspirin would be to human beings: the amazing remedy that cures all type of ailments and prevents others.
The sulfuric acid aerosols formed in the stratosphere when the sulfur dioxide combines with water particles accelerate the destruction of the ozone layer.
By this method a part per million sensitive toxic gas sensor useful to measure gases such as hydrogen sulfide, sulfur dioxide and benzene is obtained.
This is best oxidized with air.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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