Document Type: Original Article


1 1Department of Chemical Enginerring, Arak Branch, Islamic Azad University, Arak, Iran

2 Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, Iran

3 Department of soil science, Arak Branch, Islamic Azad University, Arak, Iran


High concentration of heavy metals and NO
vegetables may pose serious health risks to humans. Therefore,
this research was done to evaluate the carcinogenic and non-
carcinogenic risk of heavy metals and NO
due to the consumption
of most important greenhouse vegetables produced in Markazi
In this descriptive study, sampling of cucumber,
tomato, and bell pepper produced in the greenhouses of Markazi
province was done randomly and the concentration of Pb, Cd, Cu,
Ni and NO
of them were determined. Non-cancer risk related to
heavy metals and NO
sorption from vegetables was evaluated
using the EPA method for men and women.
The mean concentration of all the studied metals
except Cu was in the allowable concentration range. The mean
concentration of NO
in the cucumber was 300 mg/kg FW,
which was about 1.5 times higher than the maximum allowable
concentration of that in vegetables. The HQ of Pb, Cd, Ni, Cu and
for all population groups were smaller than 1. The results
showed that NO
and Pb were the major risk contributor for the
consumers. The excess lifetime cancer risks of Ni for all receptor
groups were greater than 1×10
The results of this study showed that the total
risk index of heavy metals and NO
through consumption of
greenhouse vegetables grown in Markazi province was below
one. Also, in the most age groups this index is greater for women
related to the men.


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