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Environmental hazards can be categorized in many different ways. One of them is — chemical, physical, biological, and psychological. Chemical hazards are substances that can cause harm or damage to humans, animals, or the environment.
Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the environment. Air pollution can be chemical, physical or biological. [1]
Ecotoxicity has given us a better understanding of the extent of damage caused by the release of toxic chemicals into our environment. According to the National Library of Medicine; “Current estimates project that every year, a combined load of millions of tons of potentially toxic chemicals enters the environment from a broad range of ...
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A chemical accident is the unintentional release of one or more hazardous chemicals, which could harm human health and the environment. Such events include fires, explosions , and release of toxic materials that may cause people illness, injury, or disability.
Researchers using high-tech air monitoring equipment rolled through an industrialized stretch of southeast Louisiana in mobile labs and found levels of a carcinogen in concentrations as much as 20 ...
Such chemicals may have the ability to bioaccumulate and biomagnify and can biomagnify (i.e. become more concentrated) up to 70,000 times their original concentrations. [42] POPs can affect non-target organisms in the environment and increase risk to humans [43] by disruption in the endocrine, reproductive, and respiratory systems. [42]
Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...