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The kinetic of formation of nitrous acid (HONO) has been previously investigated, and literature indicates a general agreement on the overall rate of reaction under atmospheric conditions [12] the kinetic constant four reaction (1) being in the range of k = 6 x [10.
It has been known for some twenty years that the decomposition of nitrous acid in light frees up hydroxyl radicals that spark the ozone production cycle.
They speculated that nitrous acid may be attaching itself to elements found in the ground, only to be released later on.
The selected culture was improved after treatment through ethyl methane sulphonate (EMS) soon after followed by nitrous acid (NA) exposure to further enhance its hydrolytic potential for AY-amylase activity (Table I).
Further, although nitrous acid levels typically reach 5-15 ppb by volume indoors and 30 ppb by volume in vehicles, concentrations as high as 100 ppb by volume have been measured indoors.
2] can also react directly with surfaces to form the weaker -- though still salt-producing -- nitrous acid.
001mol aqueous solution was stirred well in a 100 ml beaker and diazotized at 0-5degC with nitrous acid generated in situ by addition of HCl 36.
One of Murphy's discoveries, published this past December in Nature Geoscience, is that nitrous acid, a primary contributor to smog, cannot survive exposure to sunlight but is continually refreshed by spending its nights hiding in soil.
The study by Researchers from the Biogeochemistry Department at the Max Planck Institute for Chemistry in Mainz shows that nitrous acid is formed in fertilized soil and released into the atmosphere, whereby the amount increases with increasing soil acidity.
The complete inhibition concentrations of free nitrous acid (FNA) for NOB and AOB were 0.
The research team at Lawrence Berkeley National Laboratory (Berkeley Lab) showed that nicotine in third-hand smoke reacts with the common indoor air pollutant nitrous acid to produce dangerous carcinogens.
In the acidic stomach, the nitrite is rapidly converted to nitrous acid and then to nitric oxide and nitrosating species, which can react with amines and amides to form N-nitroso compounds (NOC), the potential causative agents in the etiology of specific cancers, adverse reproductive outcomes, and diabetes.