Volatile organic compounds are characterized as those organic chemicals with huge vapor pressure at normal room temperature. This huge vapor pressure is as a development of a minor boiling point, which results as the causation of more molecules are evaporated from the surface of the solid or liquid compound and penetrates into the air to cause volatility.
Such as the formaldehyde with the boiling point of just -19° C is evaporated from the paint and extracted from the resin. There are many varying volatile organic compound which is present everywhere. These chemical compounds are present in nature and made by human.
Such as odors or scent are a volatile organic compound. Volatile organic compounds are important for the transfer of messages between plants and animals and also play a major role in transmission from plant to plant. Whoever the volatile organic compound is alarming to the health of human or also the causation of damage to the environment.
Exclusively indoor volatile organic compounds whose concentration is at the greatest level are governed by the law. Commonly adverse volatile organic compound increases the effect on health for a long time and are not extremely toxic. This is because their aggregation is commonly in low quantity and their symptoms are minor for their establishment.
How we can define volatile organic compounds?
In the US state agencies and Environmental Protection Agencies with the autonomous free air pollution arrangement contains the exception of volatile organic compound that is not reactive or having low reactivity in the compilation of the smog process.
Checking demand for volatile organic compounds is varying from state to state in the US. In California, the conclusion obtained by the south coast district of Air quality Management and California air resource board are more remarkable in the volatile organic compound arrangement.
The use of reactive organic gases by the California ARB for the measurement of organic gases after the conception of the public.
Biologically generated VOCs
Methane ejects carbon 1150 teragrams in a year in the structure of volatile organic compounds. The major compound of volatile organic compounds is isoprene and more of its quantity is formed by the plants. The remnants are formed by microbes and plants.
The odor which is ejected by the plants also consists of leafy green volatiles and is influenced by the factors which are sunlight and temperature.
The ejection of odor takes place in the stomata of the leaves. Most of the volatile organic compounds are terpenes. It provides a sense of scale in the area of Pennsylvania of the US state is 62000 km² and survey to eject 3,400,000 kilograms of terpenes in the growing season.
Anthropogenic sources volatile organic compounds
Carbon is ejected from the anthropogenic sources in the appearance of a volatile organic compound.
Paints and coatings
The main origin of the volatile organic compound which is made by man is coatings such as careful coatings and paints. The careful and embellishing film is dispersed by the solvent. Paints of 12 billion liters are formed in a year. Glycol ethers, acetone, ethyl acetate, and aliphatic hydrocarbon are common solvents. Due to environmental establishment and arrangement coating and paint industries
Chlorofluorocarbons and chlorocarbons
Chlorofluorocarbon that is prohibited is used on a wide scale for the refrigerants and cleaning the product. Tetrachloroethene is used on a wide scale for dry cleaning.
Fossil fuel is also used to form a product such as gasoline by directly or indirectly it is used as a byproduct such as automobile exhaust gas. Other such components such as benzene, methylene chloride, perchloroethylene, and formaldehyde.
If the volatile organic compound is exposed to the indoor environment it can be devoted to infected the building syndrome. A volatile organic compound is used in the coverings of the wall, new furnishing, and the equipment which is used in the office e.g. photocopy machine.
Health risks due to volatile organic compounds
A man-made volatile organic compound such as respiratory, allergic aftereffect the infants and adults. Most of the volatile organic compound e.g limonene and styrene react with the ozone and nitrogen oxides to form the secondary aerosols and the oxidation of the product that is the causation of provocation symptoms.
Smog and tropospheric ozone are formed by the volatile organic compound. Provocation of the throat, nose, and eye, coordination loss, nausea, kidney, liver, and central nervous system damage. Organic chemicals which cause health effect are varying from more toxic to the less toxic health effect and rely upon many factors exposure level, and the time that it is exposed. Most of the organic compounds are able to cause cancer.
Reducing exposure VOCs
If we reduce the exposure of these toxins then we obtain the products with No VOCs or low-VOCs. When the design of building and homes is made the designing team use the best apparatus for ventilation plans and can reduce the infiltration from the building. A Review on Volatile Organic Compounds (VOCs) as Environmental Pollutants: Fate and Distribution | INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT (ijplantenviro.com) apollo.eas.gatech.edu/yhw/publications/He_etal_2015.pdf A Review on Volatile Organic Compounds (VOCs) as Environmental Pollutants: Fate and Distribution | INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT (ijplantenviro.com)