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Asian Journal of Research in Chemistry
Year : 2015, Volume : 8, Issue : 1
First page : ( 30) Last page : ( 35)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2015.00007.3

Investigation of Micronutrient Levels in Roadside Tea Cultivated Soil in Dibrugarh District of Assam, India

Nath T.N.*

Associate Professor, Department of Chemistry, Moran College, P.O. Moranhat-785670, Dist-Sivasagar, Assam, India

*Corresponding Author E-mail: taranathnath@yahoo.co.in


This research was carried out to investigate the micronutrient levels in roadside tea cultivated soil in the Dibrugarh district of Assam. Soil samples were collected from a site located on both side of the high way (NH 37) from Moran to Dibrugarh and another in a rural area which served as the reference site. A total of sixty samples from both sides of the road collected systematically. The micronutrient concentrations of Cu, Fe, Mn and Zn in the soil sample were analyzed using atomic absorption spectroscopy (AAS). The result of the analysis showed that as the roadside distance increases from the road edge the metal concentration decreases in a constant pattern. The concentration of Cu, Fe, Mn and Zn in soil varied within the range of 21.74± 2.06 to 27.10± 3.08, 266.48± 28.14 to 268.16± 32.08, 242.94± 30.74 to 322.18±48.06 and 30.56± 2.34 to 32.58± 2.74 mg/kg respectively from Moran to Dibrugarh. Result indicates that micronutrient concentration decreases in the order of Mn>Fe>Zn>Cu. Levels of Cu, Fe, Mn and Zn contents of control site soil were found to be 12.34, 126.42, 138.78 and 20.52 mg/kg respectively. The levels of micronutrients in roadside tea cultivated soil were higher as compared to reference soil levels. This suggests that automobiles are major source of these metals in roadside soil.



Micronutrients, roadside soil, AAS, analyzed, automobile.


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