22-May-2013
09:36:07 IST
|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.38 [2009] >
IJMS Vol.38(2) [June 2009] >
| Title: | Metal phytoremediation potential of Rhizophora mucronata (Lam.) |
| Authors: | Pahalawattaarachchi, V
Purushothaman, C S
Vennila, A |
| Keywords: | mangrove
translocation
bioaccumulation
absorption
sediment
bivariate |
| Issue Date: | Jun-2009 |
| Publisher: | CSIR |
| Abstract: | The present study consist the absorption, accumulation and partitioning of eight metals in order to find out the phytoremediation potential of the mangrove species Rhizophora mucronata (Lam.) in Alibag, Maharashtra, India. The concentrations of Cu, Cd, Ni, Mn, Cr, Zn, Fe and Pb in the sediments of the mangrove area were determined to be 92.59, 5.31, 63.29, 1020.00, 545.00, 78.18,68164.26 and 19.51 ppm, respectively on dry weight basis. Metal concentrations were different in specific parts of the plant, and the highest concentration (in ppm on dry weight basis) of each metal was found in the following pattern: leaves for Ni (1.74 ± 0.58) and Cr (16.78 ± 7.06; senescent leaves for Zn (6.29 ± 0.80); bark for Cd (1.34 ± 0.04) and Pb (7.35 ± 0.45), and roots for Fe (1236.69 ± 754.69) and Mn (618.31 ± 186.08). There were different translocation rates for each metal from root to shoots. The translocation ratios of Cd, Cr and Pb (1.53, 1.66 and 1.08, respectively) exceeded one in the case of senescent leaves, as these metals were being accumulated in leaves before falling off and thus eliminated. The trend of the phytostabilization capacity of R. mucronata in the Alibag mangrove ecosystem is confined to only the highly abundant metals in nature and the phytoremediation capacity of R. mucronata varies from metal to metal. |
| Page(s): | 178-183 |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.38(2) [June 2009]
|
|
