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Abstract

EFFECT OF CONDUCTIVITY AND pH ON THE SOIL IN DIFFERENT TRAFFIC AREAS OF HYDERABAD

K. Srilaxmi*, G. Ramya Sree and Dr. D. Sirisha

ABSTRACT

Urban soils act as a sink for heavy metals and other pollutants due to anthropogenic activities such as vehicular emissions, waste water sludges and industrial wastes. Anthropogenic activities like industrial and energy production, construction waste disposal, domestic heating systems contribute to increase levels of heavy metals in the soil. Heavy metal accumulation in the soils is of considerable important because they are persistent, non biodegradable and toxic to biota if they exceed threshold value. Urban soils vary spatially due to soil composition and they bring change in land use and land cover and play a key role in environmental change. Additional input of waste materials, land scaping and rapid change of land use also contributed unpredictable modifications of soil properties and poor soil structure increasing the concentration of heavy metals. Road side soil samples were collected from different places in the twin cities of Hyderabad representing activities taking place across the metropolitan city of Hyderabad. PH, conductivity, colour of the soil, crystalline amorphous nature of soils were determined. From the results of this study, the samples collected from different areas shows variation in their colour like dark brown, reddish brown, black, reddish and Black/Brown colour. From the brown colour of soil indicates the presence of iron component goethite Fe(OH)3, hematite Fe2O3, black colour indicates MnO2 and humus content. The electrical conductivity of soil samples was varied between 0.09 to 3.2. In all the samples Conductivity of with respect to levels from surface to 10 cms decreased variably. The PH of the road side soils is ranging from 7.5 to 8.3 which enhance the increased heavy metals.

Keywords: Traffic areas, Soil, p H, Conductivity, Heavy Metals, Pollution.


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