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In organic chemistry, peroxyacyl nitrates (also known as Acyl peroxy nitrates, APN or PANs) are powerful respiratory and eye irritants present in photochemical smog. They are nitrates produced in the thermal equilibrium between organic peroxy radicals by the gas -phase oxidation of a variety of volatile organic compounds (VOCs), or by aldehydes ...
Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.
The combination of table salt with nitrates or nitrites, called curing salt, is often dyed pink to distinguish it from table salt. [7] Neither table salt nor any of the nitrites or nitrates commonly used in curing (e.g., sodium nitrate [NaNO 3], [8] sodium nitrite, [8] and potassium nitrate [9]) is naturally pink.
A nitrate vulnerable zone is a conservation designation of the Environment Agency for areas of land that drain into nitrate polluted waters, or waterways that could become polluted by nitrates due to environmental and health threats. A nitrate vulnerable zone can be designated as a response to an increase in nitrate leaching or increased use of ...
However, there is no known safe level of exposure and thus, any exposure to particulate pollution is likely to increase an individual's risk of adverse health effects. [35] In European countries, air quality at or above 10 micrograms per cubic meter of air (μg/m 3 ) for PM 2.5 increases the all-causes daily mortality rate by 0.2-0.6% and the ...
Two men "brutally attacked and killed" a friend after wrongly accusing him of stealing a bank card. Jonathan Hutty, 49, was "violently assaulted" and found with a severe head injury inside a flat ...
Hexyl nitrite like other alkyl nitrites, [9] is a vasodilator resulting in the expansion of blood vessels, thus lowering blood pressure. Side effects can be headaches, flushing, heart rate increase, dizziness, and relaxation of involuntary muscles, such as the internal and external anal sphincter. Overdoses can cause nausea and fainting. It is ...