The Osun River serves as a source of drinking and domestic water for some communities in State Nigeria, addition to providing "healing water" the worshippers goddess. sacred river has earned status UNESCO world heritage centre worldwide attention it receives, result yearly Osun-Oshogbo worship festival. In this study, an initial investigation microplastic pollution water, sediments fish species was conducted. Abundance microplastics samples, at maximum 22,079 ± 134 particles/litre,...

Composite water samples taken from Owena Multi-purpose Dam in six sampling campaigns covering the wet and dry seasons were analyzed for physico-chemical microbial characteristics using standard methods examination of wastewater jointly published by American Public Health Association, Water Works Association Pollution Control Federation. Results showed significant (p < 0.05) seasonal variations most measured parameters with few showing spatial variation. The dam lake revealed an acceptable...

Ondo State being the highest producer of Cocoa in Nigeria constitutes most probable area with use chemical pesticides to enhance cocoa production. As effective as these chemicals may be achieving this goal, incidence their residues on non-targeted substances and total environment, attendant adverse effects have serious concerns. Our objective paper is assess contamination farm soils by organochlorine applied farms within Central Senatorial District State, Nigeria. Soil samples were collected...

This study considered the levels of 15 organochlorine pesticide (OCPs) residues (α-BHC, β- BHC, ϒ-BHC, lindane, chlorothalonil, heptachlor, aldrin, heptachlor epoxide, endosulfan I, II, endrin, dieldrin, p, p'-DDD, p'-DDT and sulphate in water, sediments fish species from Ogbese river Ekiti State, Southwestern Nigeria. Samples were extracted cleaned-up on silica gel adsorbent. The OCPs concentrations determined using Gas chromatograph (GC) equipped with Electron Capture Detector....

The potentials of avocado pear (Pearsea americana) exocarp for the removal lead and cadmium ions from solutions were characterized in single metal binary systems. native Pearsea americana was using Fourier-transform infrared spectroscopy (FTIR) scanning electron microscopy (SEM). adsorbed 98% at optimum pH value 4 83% 5 a system. contact times 30 60 minutes, respectively. biosorption followed pseudo second-order kinetic model. equilibrium measurements better described by Langmuir Freundlich...

The distribution and level of six heavy metals viz: Cr, Cd, Pd, Cu, Zn, Ni in different organs gill, head, bone, muscle eye five fish species Arius latisculatus, Cynoglossus browni, Caranx lugubris, Sardinella aurita, senegallus, associated water collected from the coastal waters Ondo State, Southwestern Nigeria were investigated this study. concentrations Zn (0.10-0.36 mg/kg), Cu (0.18-0.27 (BDL-0.01 mg/kg) Cr (0.04-0.63 found samples within Maximum Permissible Level (MPL), while higher...

The total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbon (PAH) contents of soils collected at various depths (0–15 cm, 15–30 30–45 cm) within automobile repair workshops in Akure metropolis, Nigeria were qualitatively quantitatively assessed using gas chromatographic-mass spectrometer (GC-MS). Long chain n-alkanes (n C8–C32) detected across all soils. TPH concentration (in mg/kg) for the top ranged from 85.42 ± 3.42 to123.76 4.37. middle had a range 63.45 3.47–90. 80 3.97...

Indiscriminate disposal of solid waste in unauthorized places has become an increasing problem for most cities Nigeria, especially Benin-City, Edo state. Benin-City one the largest city Nigerian is experiencing management despite best attempt avoidance, reduction, reuse and recovery. Use dumpsites still ultimate method domestic industrial wastes Benin-City. Three environs were selected randomly to evaluate their leachates characteristics. Leachate samples collected from at three months...

We report on the sources, distribution, and toxicity of sixteen polycyclic aromatic hydrocarbons (PAHs) organochlorine pesticides (OCPs) in floodplain soils Onuku River Okitipupa, Nigeria. Gas chromatography was used to quantify compounds. Five PAHs with an average trace concentration 0.25 (benzo(a)pyrene)-21.3 µg/kg (benzo(g,h,i)perylene) were identified, while OCPs residues ranged from 0.116 (aldrin)-2.18 (p,p'-DDT). High spatial distribution mostly recorded among sampling sites, whereas...

This study investigated the feasibility of Mexican sunflower (Tithonia diversifolia), a common plant that inhabits highway south western Nigeria, as novel biosorbent for nickel from solutions. pH profile, time dependency and cation interference studies were conducted using stem biomass this plant. Nickel uptake exhibited substantial enhancement both in terms kinetics well loading capacity. Results investigation showed unmodified was able to remove over 70% content solution, whereas NaOH...

Abstract We report on the speciation study of five toxic metals in floodplain alluvial soils Onukun river Okitipupa, Ondo State, Nigeria. The bulk metal concentrations soil samples were order: Fe &gt; Cr Zn Cu Pb Cd. Speciation analysis via sequential extraction was used to fractionate into operationally defined pools: exchangeable, carbonate, easily reducible, organic, and residual fractions. Generally, residual, reducible fractions most abundant pools for Cu, Fe, Zn, respectively, whereas...

Soil samples within Reobertkiri Oil Field in Niger Delta area of Nigeria were analyzed for some heavy metals, including Ba, Cd, Cr, Cu, Hg, Ni, Pb and Zn the results used to evaluate degree contamination oil field's soil. The soil reaction was acidic pH range, while moderate high organic matter contents recorded. Heavy metals measured showed varying concentrations among sample locations field. Some levels significant difference (p Nigerian Journal Science Vol. 15 2005: 42-46

Batch adsorption techniques were used to study the biosorption of Lead and Nickel from aqueous solutions by Flame forest pods. The effects optimum pH, contact time, metal ion concentration, biosorbent dose, particle size presence sodium, calcium magnesium interfering ions on sorption investigated. Experimental results showed that Delonix regia biomass was effective in removing these metals as equilibrium both attained within 60 minutes interaction with 98% removed this period. Sorption...

Background: The study determined the presence and concentration of persistent organochlorine pesticides (OCPs) residues in cow milk from Ekiti State University Agricultural farm Ado-Ekiti, Nigeria. was investigated order to monitor consumer’s exposure these chemicals pesticides. Methods: Qualitative identification quantification evaluation extracted after clean-up on silica gel were done with a Gas Chromatography coupled an Electron Capture Detector (GC-ECD). Results: results revealed 11...

The demand for food in Nigeria has increased pressure on land use including floodplains despite possible contamination from the river catchments. objective of this paper is to evaluate contaminations and health risk polycyclic aromatic hydrocarbons (PAHs) soil Irintan (Ogbese), Omi-Eye (Erio) Egbigbu (Ayetoro) cultivated Ekiti State, using standard techniques. samples were collected 0-30cm depth at 5m, 25m 45m perpendicular distances course lower, middle upstream. crop randomly Talinum...