Distribution of Trace Metals in Storm Water Runoff in the Industrial Areas of Greater Guwahati of Assam, India

Author(s): Mridul Buragohain, Yamin Hassan and Hari Prasad Sarma

The focus of this research was upon consequences of urban stormwater runoff with respect to copper, zinc, manganese, iron, cadmium, lead and nickel in the industrial areas of Greater Guwahati, which is the largest urban area of Assam, India. The water samples were collected from twenty four different sites. The metals were analysed by using Atomic Absorption Spectrometer, Perkin Elmer AA 200 model. Copper and zinc content of strom water was found to be within the guideline value of WHO. Statistical analyses of the data reveal that the distribution of various trace metals in the study area is widely off normal with significant positive kurtosis and skewness. The metal concentration of strom water in the study area follows the trend Fe > Pb > Cu > Mn > Ni > Zn > Cd. Top priority should be given to frequent monitoring of the status of strom water.

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