Soil contamination or soil pollutio

Soil contamination or soil pollution is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals, or improper disposal of waste. The most common chemicals involved are petroleum hydrocarbons, polynuclear aromatic hydrocarbons (such as naphthalene and benzo(a)pyrene), solvents, pesticides, lead, and other heavy metals. Contamination is correlated with the degree of industrialization and intensity of chemical usage.[citation needed]
The concern over soil contamination stems primarily from health risks, from direct contact with the contaminated soil, vapors from the contaminants, and from secondary contamination of water supplies within and underlying the soil.[1] Mapping of contaminated soil sites and the resulting cleanup are time consuming and expensive tasks, requiring extensive amounts of geology, hydrology, chemistry, computer modeling skills, and GIS in Environmental Contamination, as well as an appreciation of the history of industrial chemistry.
In North America and Western Europe that the extent of contaminated land is best known, with many of countries in these areas having a legal framework to identify and deal with this environmental problem. Developing countries tend to be less tightly regulated despite some of them having undergone significant industrialization.[citation needed]

ผลลัพธ์ (อังกฤษ) 3:

Soil contamination or soil pollution is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals, or improper disposal of waste. The most common chemicals involved are petroleum hydrocarbons, polynuclear aromatic hydrocarbons (such as naphthalene and benzo (a) pyrene),solvents, pesticides, lead, and other heavy metals.Contamination is correlated with the degree of industrialization and intensity of chemical usage. [citation needed]
The concern over soil contamination stems primarily from health risks, from direct contact with the contaminated soil, vapors from the contaminants, and from secondary contamination of water supplies and within the underlying soil.[ 1] Mapping of contaminated soil and the resulting cleanup sites are expensive and time consuming tasks, requiring extensive amounts of geology, hydrology, chemistry, computer modeling skills, and in GIS Environmental Contamination, as well as an appreciation of the history of industrial chemistry.
In North America Western Europe and that the extent of contaminated land is best known,with many of these countries in areas having a legal framework to identify and deal with this environmental problem.Developing countries tend to be less tightly regulated despite some of them having undergone significant industrialization. [citation needed].