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8158456 
Journal Article 
A physicochemical assessment of water quality of oil producing areas of ilaje, nigeria 
Abdus-Salam, N; Adekola, FA; Apata, AO 
2010 
4 
3 
333-344 
English 
The water bodies within five different communities of Ilaje local government area of Ondo state of Nigeria sharing the same river, were examined for some physicochemical parameters and heavy metals burden. The solids (total solids, total dissolved solids and total suspended solids), water temperature, pH, some ionic radicals and heavy metals were examined and compared with WHO guidelines on drinkable water in order to express the degree of natural and anthropogenic input to the pollution burden. The trend in the physicochemical parameters was such that it clearly indicates how negatively the water regime was stressed by pollutants generated from domestic, agricultural and industrial activities as well as effect of oil spill. Some heavy metals and anionic radicals were examined and were found to occur at threatening concentrations that calls for environmental/health concern. Phosphate, sulphate, lead and arsenic have 100% violation throughout the sampling period when values obtained were compared with WHO standard. The total dissolved solids (TDS), zinc and manganese data were within the WHO tolerable limit. Nickel, and vanadium, strongly violate WHO standards for drinking water and are significantly correlated at 0.01 probability level. This is an indication of a common source of the metal attributed to anthropogenic. The rotated component matrix analysis grouped the metals and anions studied into four. The groups 1, 2, 3 and 4 are V, Ni, As and SO42- ion; Cd, Zn and PO43- ion; Mn and Cl- ion; and Pb and NO3- ion respectively. The water bodies from the various communities examined were found generally to be unsafe for domestic and agricultural uses which are the mainstay of the inhabitants. It is recommended that proper education, monitoring and clean up procedure, incase of oil spillage, be carried out promptly at these locations. 
Anionic radicals; Ilaje river; Nigeria; Pollution; Rotated component matrix