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Causes and Effects of Heavy Metal Pollution

A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides. Many different definitions have been proposed-some based on density, some on atomic number or atomic weight, and some on chemical properties or toxicity. The term heavy metal has been called "meaningless and misleading" in a IUPAC technical report due to the contradictory definitions and its lack of a "coherent scientific basis". As discussed below, depending on context, heavy metal can include elements lighter than carbon and can exclude some of the heaviest metals. One source defines "heavy metal" as "... common transition metals, such as copper, lead, and zinc. These metals are a cause of environmental pollution (heavy-metal pollution) from a number of sources, including lead in petrol, industrial effluents, and leaching of metal ions from the soil into lakes and rivers by acid rain."

A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides.

Heavy Metal Pollution

A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides. Many different definitions have been proposed -- some based on density, some on atomic number or atomic weight, and some on chemical properties or toxicity. The term heavy metal has been called "meaningless and misleading" in a IUPAC technical report due to the contradictory definitions and its lack of a "coherent scientific basis".[1] As discussed below, depending on context, heavy metal can include elements lighter than carbon and can exclude some of the heaviest metals. One source defines "heavy metal" as "... common transition metals, such as copper, lead, and zinc. These metals are a cause of environmental pollution (heavy-metal pollution) from a number of sources, including lead in petrol, industrial effluents, and leaching of metal ions from the soil into lakes and rivers by acid rain.

A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides.

Heavy Metal Pollution and Its Phytoremediation Through Wetland Plants

Industrialisation and urbanisation have led to the rapid deterioration in the water quality of rivers, lakes and reservoirs. Heavy metal pollution in aquatic ecosystems has become the most important point for discussion in recent years. The problem of heavy metal pollution is emerging as a matter of concern at local, regional and also at global scales. Heavy metal pollution in aquatic ecosystems pose serious threats to aquatic biodiversity, and drinking of contaminated water pose severe health hazards in humans. Therefore, the focus of attention has been shifted from mere monitoring of environmental conditions to the development of alternative means to solve the environmental problems at local and global levels. This new book discusses how economic aspects and side effects of conventional treatment technologies in aquatic ecosystems paved way to phytoremediation technology.

This new book discusses how economic aspects and side effects of conventional treatment technologies in aquatic ecosystems paved way to phytoremediation technology.