The concentrations of nine metals (Cd, Pb, Ni, Cr, Co, Cu, Fe, Mn and Zn) were determined in lip sticks, glosses, balms, eye pencils, eyeliners, shadows, blushes, mascaras face powders. study was aimed at providing information on the risk associated with human exposure to these facial cosmetic products. samples measured by atomic absorption spectrometry after digestion a mixture nitric acid, hydrochloric acid hydrogen peroxide. mean cosmetics ranged from 3.1 8.4 μg g-1 Cd, 12-240 9.1-44...

This study presents the results for determination of concentrations and distribution patterns polycyclic aromatic hydrocarbons (PAHs) in urban street dusts from Nigerian megacity, Lagos, order to provide information on their sources, potential environmental human health risks arising exposure PAH contaminated dust. Gas chromatography-mass spectrometry was used quantification levels PAHs dust samples after they were extracted with n-hexane/dichloromethane by ultrasonication. The ranged 545...

The objectives of this study are to determine the concentrations and evaluate sources 16-priority polycyclic aromatic hydrocarbons (PAHs) in soils from selected vehicle-parks southern Nigeria. collection soil samples was by auger three sites at top (0–15 cm) sub (15–30 levels. Some physicochemical parameters were determined. Gas chromatography equipped with flame ionization detector (GC-FID used PAHs. wet season ∑16 PAHs range 365.8 1065.8 µg/kg 142.9 5321.9 for soils, respectively, while...

This study investigated the presence of organophosphate pesticides (OPPs) in fifty herbal mixture samples obtained from major towns Bayelsa, Nigeria, to evaluate their safety. OPPs were quantified using a gas chromatograph (GC) coupled with mass-selective detector after solvent extraction. The results showed that all mixtures contained detectable levels OPPs, detection frequencies for individual OPP congeners ranging 52% pyraclofos 90% diazinon, most frequently detected congener. At least...

Abstract This study investigated the adsorption and desorption performances of water hyacinth leaves powder (WHLP) roots (WHRP) towards Pb 2+ , Co Zn Ni in industrial wastewater. The parameters influencing process were assessed, models proposed to explain both equilibrium kinetics sorption was conducted using different HNO 3 NaOH concentration. results showed that comparatively, metal uptake capacity WHLP higher than WHRP as examined by parameters. biosorption data fitted Langmuir Freundlich...

The distribution, pollution sources and ecological risk of the 16 priority PAHs were investigated in surface sediments Warri River, Niger Delta Nigeria. Sediment samples collected from six points along river during wet dry seasons. concentrations determined using gas chromatography equipped with flame ionization detector after ultra-sonication hexane dichloromethane. mean ?16 ranged 1158 to 1993 µg/kg for entire study period. season significantly higher than those season. 3-ring dominant PAH...

The application of agrochemicals such as organophosphate pesticides (OPPs) has several benefits in agriculture but also poses great risks to the environment and human well-being. Thus, this study was conducted determine concentrations, distribution pattern, relationships, potential sources OPPs agricultural soils vegetables from Delta Central District (DCD) Nigeria provide useful information for pollution history, establishment control measures risk management. Fourteen were determined soil...

This study evaluates the characteristic levels, sources and risk of human exposure to polycyclic aromatic hydrocarbons (PAHs) in indoor dusts from electronic repair workshops southern Nigeria. The dust samples were collected by gentle sweeping with a brush dustpan, subsequently dried extracted hexane/dichloromethane ultrasonication. extracts purified on silica gel/alumina column, then analysed for their PAH content means gas chromatography-mass spectrometry. concentrations PAHs workshop...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Some Perfluorophenylphosphine DerivativesD. D. Magnelli, G. Tesi, J. U. Lowe Jr., W. E. McQuistionCite this: Inorg. Chem. 1966, 5, 3, 457–461Publication Date (Print):March 1, 1966Publication History Published online1 May 2002Published inissue 1 March 1966https://pubs.acs.org/doi/10.1021/ic50037a027https://doi.org/10.1021/ic50037a027research-articleACS PublicationsRequest reuse permissionsArticle...

The adsorption capacity of eggshell in removing Pb2+, Ni2+, Mn2+, Zn2+ and Co2+ from standard solution consolidated brewery effluent was investigated this study. sorption process dependent on pH, contact time, initial metal ion concentration sorbent dosage with pH 7.0 being the optimum value, maximum attained within first 60 minutes. equilibrium data followed Langmuir Freundlich isotherms R2 ranges 0.834 – 0.993 0.939 0.998 respectively. kinetic were best described pseudo second order...

The concentrations of the USEPA 16 priority polycyclic aromatic hydrocarbons (PAHs) in soils floodplain lower reaches River Niger, Nigeria, were investigated following Lagdo Dam flood disaster 2012. aim was to provide information on extent contamination, sources, and risks PAHs these soils. Σ16 ranged from 812 10,700 μg kg. benzo(a)pyrene (BaP) toxic equivalence incremental lifetime cancer risk (ILCR) factors used evaluate human exposure carcinogenic mutagenic not detected 4090 kg 4150 kg,...

This study evaluated the concentrations, composition, sources, and potential risks of polycyclic aromatic hydrocarbons (PAHs) in soils, indoor outdoor dust from Port Harcourt city Nigeria.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Phosphonitrilic IsothiocyanatesG. Tesi, R. J. A. Otto, F. G. Sherif, and L. AudriethCite this: Am. Chem. Soc. 1960, 82, 3, 528–530Publication Date (Print):February 1, 1960Publication History Published online1 May 2002Published inissue 1 February 1960https://pubs.acs.org/doi/10.1021/ja01488a007https://doi.org/10.1021/ja01488a007research-articleACS PublicationsRequest reuse permissionsArticle Views82Altmetric-Citations25LEARN ABOUT THESE...