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The Impact of Pesticide Application on Heavy Metal (Cd, Pb and Cu) Levels in Spinach

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Author(s): Timothy Musa CHIROMA | Bala Isah ABDULKARIM | Haruna Mavakumba KEFAS

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 6;
Issue: 11;
Start page: 117;
Date: 2007;
Original page

Keywords: Spinach | Pesticides | Heavy Metal | Critical Concentration

ABSTRACT
The impact of Pesticides (DELVAP 1000EC) application on the levels of Cd, Pb and Cu in two species of Spinach (maroon and green) was investigated. The results shows highest accumulation in leaves compared to stem and roots for both species. The levels of Cd, Pb and Cu in leaves of maroon Spinach treated with pesticides are 6.8, 1.4 and 18.6 times respectively higher than the maximum tolerable levels of 30μg/g, 300μg/g and100μg/g for Cd, Pb and Cu respectively in plants, while in green Spinach treated with pesticides the levels of Cd and Cu in leaves are 4.9 and 14.7 times respectively higher than the maximum tolerable levels. The concentration of Cd, Pb and Cu in leaves, stem and roots of maroon Spinach treated with pesticides are 163%, 222% and 178%; 364%, 325% and 449%; and 254%, 363%and 224% respectively higher than the untreated Spinach while their corresponding concentration in green Spinach treated with pesticides are 1! 56%, 238% and 150%; 163%, 454% and 462%; and 156%, 407% and 346% respectively higher than the untreated green Spinach.
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