Study on Heavy Metals Levels and Some Physicochemical Parameters of a Polluted Creek along the Tin Can Island In Lagos (Published)
The study was carried out to assess the level of selected metals and physico-chemical parameters of a polluted creek along the Tin Can Island in Lagos. Metals such as Cu, Fe, Zn, Pb, Cd, Mn, and Cr were analysed using Atomic Absorption Spectrophotometer. Correlations analysis was conducted to determine the spatial distribution of the metals. From the results, it was evident that accumulation of heavy metals was within the internationally acceptable standards as reported by WHO and EPA. There was significant difference (p<0.05) between the physicochemical parameter across the different stations and months. Although conductivity (11060.5±6.4), TDS (2328.33±3.04) and BOD (107±52.0) were higher than the recommended limit of these metals by WHO which could be attributed to large amount of deposited and sewage floating at the banks of the creek. However, if these levels are not checked, they may increase the potential of bioaccumulation in the aquatic organisms and inhabitants that depends on the creek for survival. Therefore, there is need for policies to conduct regular monitoring of this creek to avoid future deterioration of the creek.
Variation of the Physico-Chemical Parameters, Nutrients and Some Selected Heavy Metals Around the Waters of the Tincan Island in Lagos, Nigeria (Published)
This study assessed the physico-chemical characteristics, concentration of heavy metals and nutrients composition of the surface water of Badagry and Tincan Island creeks adjoining the Lagos Lagoon. Sanplind was done once in a month between May and September 2019. The pH, Temperature, Salinity, Conductivity, Total Dissolved Solids, Total Suspended Solids, Dissolved Oxygen, Biochemical Oxygen Demand, Sulphate, Phosphate, Silicate, Nitrate, Calcium, Copper, Iron, Zinc, Lead, Cadmium, Manganese, Chromium and Nickel were determined usuing statndard methods. there was a significant difference (p<0.05) in the different parameters recocorded in the stations and the months. The DO (0.36 mg/L- 5.47mg/L) was lower than the WHO recommended 5mg/L for water quality assessment with a significant difference (p<0.05) recorded across the stations and months. The BOD values varied significantly across all the stations and the months with up to 211mg/L in station 1 in September thus depicting a severe deterioration of the creek. The concentrations of the heavy metals in the water samples were within the safe limit but posits potential human and fisheries health implications from continuous usage.