nstantaneous and historical temperature effects on a-pinene
Determination of atmospheric
heavy metals using two lichen
species in Katni and Rewa cities, India
Author Details
RajeshBajpai
Lichenology Laboratory, National Botanical Research Institute (CSIR), RanaPratapMarg, Lucknow - 226 001, India
G.K.Mishra
Lichenology Laboratory, National Botanical Research Institute (CSIR), RanaPratapMarg?Lucknow - 226
001, India
S.Mohabe
Lichenology Laboratory, National Botanical Research Institute (CSIR), RanaPratapMarg?Lucknow - 226
001, India
DalipK.Upreti
(Corresponding author)
Lichenology
Laboratory, National Botanical Research Institute (CSIR), RanaPratapMarg?Lucknow - 226
001, India
e-mail: upretidk@rediffmail.com
S.Nayaka
Lichenology Laboratory, National Botanical Research Institute (CSIR), RanaPratapMarg?Lucknow - 226
001, India
Publication Data
Paper received:
20 November 2009
Revised
received:
28 April 2010
Accepted:
11 May 2010
Abstract
A biomonitoring
study was conducted to assess the levels of atmospheric heavy metal pollution
in Katni and Rewa cities
of MadhyaPradesh, state in central India. The Pyxinecocoes and
Phaeophysciahispidula,
two epiphytic foliose lichen were used as bioindicators
in the present study and seven metals (As, Al, Cd,
Cr, Fe, Zn, Pb) were analyzed in naturally growing thallus. The concentrations of these metals was observed
to be in higher range as maximum values of Al, Cd,
Cr and Zn were reported from the lichen samples from Rewa
city which was 561.8?2.4, 6.8?0.8, 35.2?1.4, 214.6?2.0 ?g g-1 dry
weight respectively. Whereas As, Fe and Pb were
reported maximum in the lichen samples collected from Katni
city areas with 33.4?0.05, 689.4?2.6, 13.3?0.5 ?g g-1 dry weight
respectively. However the accumulation of Cd and Pb from both the cities are more or less similar in
concentration. The selectivity sequence of metals were Fe>Al>Zn>As>Cr>Pb>Cd in Katni city, and Al>Fe>Zn>Cr>As>Pb>Cd in Rewa city. The findings of this study indicates that extent of heavy
metal pollution in the atmosphere of the two cities which may lead to adverse
health affects.
Key
words
Biomonitoring, Heavy metal pollution, Lichen, Bioindicator
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