1, environmental hazards:
Benzene series have a serious negative impact on regional, especially urban, atmospheric environment. Because most benzene series (such as benzene, toluene, etc. ) have strong volatility, and they are easily volatilized into gas at room temperature, forming volatile organic compounds (VOCs) gas, which will cause VOCs gas pollution. In wastewater pollution, benzene series wastewater is also very harmful to human beings.
2. Harm to human body:
Many benzene series are toxic to organisms and can directly endanger human health. Studies have shown that BTEX has neurotoxicity (causing neurasthenia, headache, insomnia, dizziness, lower limb fatigue and other symptoms) and genetic toxicity (destroying DNA). Long-term exposure can lead to anemia and leukemia.
Many benzene series compounds have pungent odor, and a considerable number of substances, such as styrene, will produce unpleasant but unspeakable odor, which will reduce the quality of people's living environment. Many benzene series can also cause photochemical smog in cities, causing secondary pollution, which is more harmful to human health.
Extended data:
Composition and physicochemical properties:
Benzene series, namely monocyclic aromatic hydrocarbons (MACHs), is the general name of benzene and its derivatives, and it is a common pollutant discharged by human activities. The absolute number of benzene series in a complete sense can be as high as more than 10 million.
But generally speaking, benzene series mainly include benzene, toluene, ethylbenzene, xylene, trimethylbenzene, styrene, phenol, aniline, chlorobenzene, nitrobenzene and so on. Among them, benzene (benzene), toluene (toluene), ethylbenzene (ethylbenzene) and xylene (xylene) are four representative substances, and some people call benzene series BTEX for short.
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