UPTAKE OF METALS BY FOUR COMMONLY AVAILABLE PLANT SPECIES COLLECTED FROM CRUDE OIL CONTAMINATED SITES OF LAKOWA OIL FIELD (ASSAM)

Mukut Kalita, Arundhuti Devi
2012 International Journal of Agricultural Science and Research   unpublished
Metals and other contaminants are released by oil field operations carried out at Group Gathering Stations (GGSs). Present study investigates the uptake of seven metals (Cd, Cu, Fe, Mn, Ni, V, and Zn) by plants grown in crude oil contaminated sites of Lakowa Oil Field (Assam). Plant samples of commonly available fruits and vegetables (Musa paradisiaca, Ziziphus jujuba Lamk, Solanum melongena Linn, Brassica juncea Hk F&Th) were collected from petroleum contaminated sites near the two Group
more » ... ing Stations namely Lakowa GGS3 and Lakowa GGS9 of ONGCL at Lakowa Oil Field (Assam). Along with the plant samples, soil samples were also collected (at 0-45cm depth) from the corresponding growth sites for the measurement of soil metal contents. Accumulation of Cd in Brassica juncea, Hk. F. & Th. leaves is less though Cd is considered to be absorbed effectively by leaf system. In general, Cd is the least abundant element for all the plant samples. Brassica juncea, Hk. F. & Th. contains Zn in high abundance. Mn and Fe were present in all the plant samples in very high amount. Amongst them Brassica juncea, Hk. F. & Th. contains much more Mn and Fe than the other plant samples. From the present study it can be highlighted that plants grown in crude oil contaminated soils contain much higher concentration of Ni and V than those grown in uncontaminated soil. The uptake of metals by plants was found to be affected by the type of the plant species as well as metal species involved.
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