CONTENTS OF HEAVY METALS AND ORGANOCHLORINE INSECTICIDES (HCH AND DDT) IN AGRICULTURAL MONITORING SITES (16X16 KM) FROM THE WEST REGION PUBLISHEDAlexandrina MANEA1, Nicoleta VRINCEANU1, Mihaela PREDA1
Abstract: Soil loading of with heavy metals and organochlorile insecticedes pose a risk to the environment and therefore their monitoring is required. Land angricultural monitoring system, level I (16x16 greed), in West Region include 89 sites. In the top soil samples of these sites were determined, also, the contents of heavy metals (Cu, Pb, Zn, Cd, Co, Ni, Mn) and organochlorine insecticides (HCH and DDT). Most of studied elements have maximum values below alert threshold for sensitive use. Except, Cd and DDT with values belong to normal value class. The contents of heavy metals and organochlorile insecticedes (DDT and HCH) were presented according to land uses, soil classes, soil types, textural classes, soil reaction classes and humus content. The variation of heavy metal contents according to soil classes reveals highest values of Cu, Co, Ni, Mn on Protisols and Anthrisols, of Pb on Podzols, of Zn on Solonetz, of Cd on Vertisols. The lowest values of Cu, Zn, Cd were recorded on Luvisols and in case of Ni, Mn on Podzols. Generally, the values of these elements are lower compared to the obtained contents at the national level.
Key words: soil, monitoring, heavy metals, HCH, DDT