HEAVY METALS IN SOIL - WATER - PLANT ECOSYSTEMS OF PERI URBAN BANGALORE
Loading...
Date
2007-10-05
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences GKVK, Banglore
Abstract
Bangalore, one of the fastest growing cities in India produces nearly 800 million
liters of urban sewage daily. Sewage in peri urban Bangalore drains in two phases
Chalaghatta - Varthur valley (East phase) and Vrishabavathi - Byramangala valley
(West phase). The sewage is used for growing vegetables fruits and other crops by the
peri urban fanners.
The range of heavy metal content of sewage sampled at various locations during
rainy season were Cd 0.01 to 0.03, Cr 0.03 to 0.04, Pb 0.06 to 0.12, Ni 0.06 to 0.11 mg 1
and in summer the ranges were As 0.71 to 0.99, Cd 0.03 to 0.16, Cr 0.12 to 0.15, Pb 0.29
to 0.39, Ni 0.16 to 0.23 mg f' respectively.
The average content of As, Pb, Cd, Cr, Ni, Cu, Fe, Mn and Zn in edible parts of
vegetables were 65.1, 27.8, 2.2, 51.6, 30.7, 60.2, 688.2 and 132.0 mg kg' dry weight in
samples of east phase. The vegetables, fruits and other crops grown in peri urban
Bangalore using sewage recorded very high levels of metals and are not suitable for
human consumption.
Description
Keywords
null