ISSN 0976-4550  
DOI: 10.21276/Ijabpt  
 
 
 
Peer Reviewed Online International Journal of Applied Biology and Pharmaceutical Technology www.ijabpt.com
 

ASSESSMENT OF HEALTH RISKS RELATED TO THE CONSUMPTION OF CASSAVA TUBERS GROWN IN THE MINING TOWN OF MOANDA, GABON  Page No 19 to 28, Volume-8, Issue-3, July-Sept-2017 

Messi Me Ndong Albert.N, MakaniT, Anguile J.J

The purpose of this study was to measure qualitatively and quantitatively the elements present in agricultural soils and cassava tubers in the Moanda mining region in order to determine the health impact of tuber consumption. The Wavelength-Dispersion X-Ray Fluorescence (WDXRF) analysis was the technique required for this study.The mean levels of trace metallic elements (in ppm fresh mass) in soils were greater than the recommended agricultural soil concentration limits for Fe (319743.7), Al (160811.85), Mn (37141.35) Ni (3007.12), Zn (171.03), Cu (79.68), Co (137.06) and Cr (121.07). In the tubers, metallic trace elements such as Al, Mn and Zn were observed with mean concentrations (in ppm of fresh mass) of (74.44) for Al, (4.05) for Mn and (1.35) for Zn. The transfer factor (TF) ratios for the trace elements were ? 1, with (0.0004) for Al, (0.0001) for Mn and Zn (0.007). The Target Hazard Quotients (THQ) values ??for the trace elements studied were ? 1 except for the THQ calculated for the Mn at site 3 which was (5.191). Just as the Hazard Index (HI) calculated for each location was lower than the unit with the exception of site 3, or (5.37) clearly attributable to the THQMn.

The consumption of cassava tubers can cause short- and long-term adverse health effects for the Moanda population by summing up all other scenarios not included in this study.

Key words: Metal trace elements, cassava tubers, agricultural soils, Moanda.

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