Heavy metal accumulation in medicinal plants collected from environmentally different sites.
OBJECTIVE
To estimate the heavy metal content in soil and selected medicinal plants procured from environmentally different sites of the same city.


METHODS
Soil and plant samples of Abutilon indicum, Calotropis procera, Euphorbia hirta, Peristrophe bycaliculata, and Tinospora cordifolia were collected from 3 environmentally different sites of the city: heavy traffic area (HTA), industrial area (IA), and residential area (RA). Pb, Cd, Cr, and Ni were estimated in soil and plant samples by inductively coupled plasma emission spectrometry and compared.


RESULTS
The level of heavy metal was higher in soil than in plant parts studied. Accumulation of heavy metals varied from plant to plant. Pb was the highest in Calotropis procera root from HTA site and the lowest in Peristrophe bycaliculata whole plant from IA site. It was also lower in residential area than in heavy traffic area.


CONCLUSIONS
The level of heavy metal content differed in the same medicinal plant collected from environmentally different sites of the same city. Thus, it reiterates our belief that every medicinal plant sample should be tested for contaminant load before processing it further for medication.
Herbal Research Section, Industrial Toxicology Research Centre, P.O Box-80, MG Marg, Lucknow, India.
Jyoti
J
Barthwal
Smitha
S
Nair
Poonam
P
Kakkar
D004785:Environmental Pollutants / Q000378:metabolism*; D007194:India; D019216:Metals, Heavy / Q000378:metabolism*; D010946:Plants, Medicinal / Q000378:metabolism*
D004785:Environmental Pollutants; D019216:Metals, Heavy