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Substantial quantities of toxic and non-toxic waste are generated during the extraction, refinement, and transportation stages of oil and gas. Some industry by-products, such as volatile organic compounds , nitrogen & sulfur compounds , and spilled oil can pollute the air, water and soil at levels that are harmful to life, when improperly managed.
Due to the long-range transport of DDT, the presence of this harmful toxicant will continue as long as it is still used anywhere and until the current contamination eventually degrades. Even after its complete discontinued use, it will still remain in the environment for many more years after because of DDT's persistent attributes. [16]
Benzene in soft drinks has to be seen in the context of other environmental exposure. Taking the worst example found to date of a soft drink containing 87.9 ppb benzene, [5] someone drinking a 350 ml (12 oz) can would ingest 31 μg (micrograms) of benzene, almost equivalent to the benzene inhaled by a motorist refilling a fuel tank for three ...
Benzene is a natural constituent of petroleum and is one of the elementary petrochemicals. Due to the cyclic continuous pi bonds between the carbon atoms, benzene is classed as an aromatic hydrocarbon. Benzene is a colorless and highly flammable liquid with a sweet smell, and is partially responsible for the aroma of gasoline.
More than 200 chemical plants nationwide will be required to reduce toxic emissions that are likely to cause cancer under a new rule issued Tuesday by the Environmental Protection Agency. The rule ...
In absence of more detailed data, this can be a very coarse parameter for pollution (e.g. for summer smog or indoor air pollution). The major sources of NMVOCs include vegetation, biomass burning, geogenic sources, and human activity. [4] [5] Trimethylbenzene is an important NMVOC due to its high photochemical reactivity to form ozone in the ...
Benzene is a known cancer-causing chemical that is widely used across the U.S. to make plastic and synthetic fibers, according to the CDC. This home appliance can put out more benzene than ...
Biomagnification is another process related to bioaccumulation as the concentration of the chemical or metal increases as it moves up from one trophic level to another. [1] Naturally, the process of bioaccumulation is necessary for an organism to grow and develop; however, the accumulation of harmful substances can also occur. [7]