The presence of heavy metals in soils is an environmental hazard key and one of the most difficult contamination control problems to solve. There are two main causes: firstly, the chemical character of heavy metals , favours accumulate in the environment and, secondly, the complexity of the geochemical soil matrix. Simplification of this matrix increase chances of recognition of basic soil processes. Soil is a major reservoir for xenobiotic compounds as it possesses an ability to bind various chemicals. The soil as an important ecological factor due to several characteristics: close correlation with the climate and region and its structure, configuration and nature; its own quality on which relies formation and protection of surface and underground matter resources; influence on humans nutrition and its role in social and economic development of mankind.
Last date updated on June, 2014