43084 Kamath M.A. et al./ Elixir Bio Tech. 99 (2016) 43084-43088
Introduction
Environmental pollution is the result of industrialization
and urbanization. Environmental pollution is a broad spectrum
terminology used for any kind of substance of any process that
may cause harm or have toxic effect on the environment and
the eco-system. Even though these processes have a positive
effect on the daily life of individuals but its deep impact on the
environment cannot be neglected.
Metals are the natural components of the soil. Some of
these metals are micronutrients and are required for plant
growth, such as Zn, Cu, Mn, Ni and Co, while others have
unknown biological functions such as Cd, Pb and Hg (Gaur
and Adholeya, 2004).
Heavy metal may interrupt normal functioning of the soil
ecosystem which in turn causes negative effects on the growth
of plants. The plants are dependent on the soil for their
mineral nutrition as well as water. Heavy metal accumulation
in soil due to various factors causes the plants to absorb water
contaminated with these metals with the other vital minerals.
These heavy metals do not have any specific role in the plant
metabolism and thus start getting accumulated in the plants.
A biogeochemical research was done in areas located in
the outskirts of Mumbai viz. Dahisar, Mira Road, Vasai and
Nallasopara. The sampling sites are classic examples of areas
that have contaminated soil due to the lack of proper water
supply and overuse of chemical fertilizers by the cultivators
have increased the level of heavy metals in the soil which can
be easily absorbed by the test plant.
This project work is been done for analyzing the soil and
the accumulation of heavy metals in the test plant i.e.
Amaranthus cruentus. Heavy metals can cause phytotoxic
effects (Prasad and Hagemeyer, 1999) and affect human health
harmfully (Reilly, 1991). Thus, this research work is a
synthesis between ecotoxicology and toxicology. On the one
hand, it analyzes the potential risks posed by heavy metals to
the environment; on the other hand, it examines the effect on
human health.
The present study focused on the content of potential
toxic elements (PTE‟s) in the soil and plant samples collected
from the sampling sites. The main objectives of the research
was
To study the heavy metal contamination in the soil
To evaluate if the PTE‟s from the soil are transferred to
the plants
To study the accumulation pattern of heavy metals in the
plants
To determine the pollution index and to evaluate if these
plants are fit for human consumption
Materials and Methods
Sampling Sites
The study area was the northern suburbs of the city of
Mumbai, India. Mumbai is the said to be the economic capital
of India and has a major role in the Indian economy but like
any other metropolitan city it faces several environmental
problems. These problems are due to increasing population,
vehicular pollution, industrial expansion, urbanization and
lack of environmental policies.
The railways are one of the best modes of transport in the
city and everyday millions of people use railways. Mumbai
Suburban Railway consists of exclusive inner suburban
railway lines augmented by commuter rail on main lines
serving outlying suburbs to serve the Mumbai Metropolitan
Region. Spread over 465 kilometers (289 mi), the suburban
railway operates 2,342 train services. These railway lines are
been used for cultivation of vegetables for many years now.
The sampling sites were specific i.e. biased sampling was
performed. The test plant i.e. Amaranthus cruentus were taken
from the railway tracks of Dahisar, Mira Road and Nalla
Sopara. The climatic and environmental factors in all these
locations were same but the method of cultivation used
ARTICLE INFO
Article history:
Received: 2 August 2016;
Received in revised form:
29 September 2016;
Accepted: 2 October 2016;
Keywords
Toxic elements,
Hazardous,
ICP-AAS,
Amaranthus cruentus,
Heavy metals.
Accumulation and Translocation of Heavy Metals in Soil and Amaranthus
Cruentus
Kamath M.A.
1
, Jadhav R.N.
1
and Pimpliskar M.R.
2*
1
Vidyavardhini‟s Zoology Research Lab. E.S.A. College of Science, Vasai West, India – 401202.
2
G. M. Momin Womens College, Bhiwandi Dist-Thane. India.
ABSTRACT
A biogeochemical field study was carried out in the outskirts of Mumbai, where
agricultural soils were contaminated by potentially toxic elements. Amaranthus cruentus
is an important part of the diet in the state of Maharashtra and thus it was selected as a
test plant. Environmental pollution is one of the severe problems that are faced by
Mumbai and agriculture is also affected due to it. Analysis of lead and cadmium, two of
the most hazardous heavy metals was done from the soil samples and its accumulation
patterns in the test plant were studied. Lead and cadmium analysis was done using ICP-
AAS to determine if these vegetable samples are fit for human consumption.
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Elixir Bio Tech. 99 (2016) 43084-43088
Bio Technology
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