| Pak. J. Bot., 39(3): 747-751, 2007. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
ASSESSMENT OF THE LEVEL OF TRACE
METALS IN COMMONLY EDIBLE VEGETABLES LOCALLY AVAILABLE IN THE MARKETS OF
KARACHI CITY
DURDANA RAIS HASHMI, SHAHNAZ ISMAIL* AND G.H. SHAIKH
Abstract:
A
study was carried out to determine the concentrations of trace metals in
common vegetables, which are locally available in the markets of Karachi
for consumers. Samples of 18 varieties of vegetables, belonging to
malvaceae, solanaceae, cucurbitaceae, crucifeareae, liliaceae, labiate,
chenopodeaceae and zingaberaceae families were procured from local
markets of different areas of Karachi and analyzed for Fe, Cu, Mn, Zn,
and Cr by Atomic Absorption Spectrophotometry. The data is reputed at
99% (± 2S) confidence level after triplicate measure. Maximum
concentration of Fe was found to be 32.3 µg/g in spinach, Zn 8.6 µg/g
in ladyfinger, Mn 5.6 µg/g in mint, Cu 3.3 µg/g in mustard and
chromium 1.2 µg/g in coriander. The overall content of trace metals
appeared to be within the limit laid down for safe human consumption.
Centre for Environmental Studies,
PCSIR Laboratories Complex,
Shahrah-e-Dr. Salimuzzaman Siddiqui, Karachi-75280, Pakistan.
*Fuel
Research Centre, PCSIR, Shahrah-e-Dr. Salimuzzaman Siddiqui,
Karachi-75280, Pakistan. Email:
Corresdonsind Address: drhpak@yahoo.com |
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