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488 articles for “metal”
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Research ArticleOpen accessEvery word in the titleSpatial-Dynamics of Trace Metals Accumulation and Physicochemical Characteristics in Ikpukulu-Ama Creeks, Rivers State, NigeriaDavies Ibienebo Chris, Khang Wen Goh, Davies Imachrist Ibienebo et al.The study examines the spatial-dynamics variability of water parameters and trace metal concentrations between January and June 2023 at the Ikpukulu-Ama sites of the Bonny River, Nigeria. Key parameters analyzed include temperature, salinity, pH, transparency, dissolved oxygen, and trace metals (Ni, Pb, Cd, Cu, Zn) across three sites. The highest temperature, 32.56°C, was recorded at Site 2, indicating potential thermal … …OnLine Journal of Biological Sciences, Vol. 26, Issue 2 · 29 Jul 2026 · 499 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReassessment of Molecular Variation in Isolated Populations of Deschampsia cespitosa from Metal Contaminated Regions in Northern Ontario (Canada) after 17 Years of Potential Genetic RecombinationSabrina Rainville, Peter Beckett, Kabwe NkongoloThe effects of ore extraction and processing procedures in the Greater Sudbury and Cobalt regions have been long-lasting. The objective of this study is to determine the current level of genetic variation in Deschampsia cespitosa populations from metal contaminated and uncontaminated sites in samples collected in Northern Ontario in 2016 after 17 years of potential genetic recombination since the last … …American Journal of Environmental Sciences, Vol. 13, Issue 4 · 13 Jul 2017 · 7,046 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparison of Microbial and Heavy Metal Contents in Soils and Roots under Mangrove Forest Stands with Different Levels of Pollution in the Niger River Delta, NigeriaAroloye Ofo NumbereOil and gas exploration in the Niger Delta, has resulted to increased heavy metal contamination. It is thus postulated that increased heavy metal will lead to decreased microbial content in soil and root. To test this hypothesis ten replicates each of soil and root samples were collected from already established sites. Samples were sent to the laboratory for analyses of … …American Journal of Applied Sciences, Vol. 15, Issue 2 · 25 Jun 2017 · 8,181 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Comparative Assessment of Heavy Metal Pollution in Soil using pH Enrichment Factor and Pollution IndexMichael Nwachukwu, Okoro Uwaezu, Ogbuja I. Ogbuja, Leonard NwosuMany researchers have described pH as heavy metals pollution indicator in soil, but no effort has been made to determine level or quantity of heavy metals that could be indicated by pH. This study measured in-situ soil pH values at Nekede motor mechanic village against the natural background values. We used readings obtained to compute pH enrichment factor (pHeF) at … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 12 Apr 2017 · 7,979 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePhytomanagement of Heavy Metal Lead by Fodder Grass Lasiurus scindicus in Polluted Soil and Water of Dravyawati RiverParul Sharma, Sonali PandeySoil and water pollution with heavy metals is a worldwide issue and is still unresolved. Phytoremediation is a new and rising technology that applies plants for cleanup lightly contaminated soils and water. Lasiurus scindicus have been chosen in this work for decontaminating soil and water from heavy metal (lead). This plant was grown in contaminated soil and water over a … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 12 Apr 2017 · 7,729 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleUsing Permeable Reactive Barriers to Remediate Heavy Metal-Contaminated Groundwater through a Laboratory Column ExperimentSomean Yin, Gemunu Herath, Sokchhay Heng, Senajith KalpageRecently, groundwater sources are being polluted by various activities such as agriculture, livestock, decentralized wastewater treatment systems and acid rain. Groundwater can also be polluted by landfill leachate, sewage, mine tailings, non-engineered deep well disposal of liquid waste and seepage from industrial waste lagoons. There are many studies reported contaminated groundwater remediation using Permeable Reactive Barrier systems (PRBs) and many … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 12 Mar 2017 · 8,765 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleProcessability of Bulk Metallic GlassesRaffaella Aversa, Daniela Parcesepe, Relly Victoria V. Petrescu et al.Microfluidic Shear Flow Instabilities in Injection Molded Glassy Metal are investigated. The formation of microfluidic shear flows instabilities involving the presence of different viscosities fluids has been observed in injection molded Bulk Metallic Glasses. The complex rheology of injection molded metastable glassy metal, which has been hypothesized to induce selective clustering of atoms of different steric hindrance, is discussed. Smaller … …American Journal of Applied Sciences, Vol. 14, Issue 2 · 15 Feb 2017 · 7,493 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEvaluation of Heavy Metals in Gadus morhua and the Associated Cancer RisksKayode Idowu Ogungbemi, Margaret Bose Adedokun, Josephine Nneamaka Onyeka-UbakaGadus morhua is a good protein source but some methods of its preservation can be a source of heavy metals contamination. Gadus morhua samples were collected from nine major markets for the identification and quantification of heavy metals. An Atomic Absorption Spectrophotometer (AAS) from an analytical and consultancy laboratory in the Department of Soil Resources Management, University of Ibadan was … …American Journal of Environmental Sciences, Vol. 20, Issue 1 · 2 Jan 2025 · 5,032 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleGlassy Amorphous Metal Injection Molded Induced Morphological DefectsRaffaella Aversa, Daniela Parcesepe, Relly Victoria V. Petrescu et al.Melt rheology in injection molded metastable supercooled liquid metal of Zr44-Ti11-Cu10-Ni10-Be25 alloy may induce selective crystallizations. High mobility Be, Cu and Ni atoms have been observed to differently crystallize in bulk metal glassy supercooled liquids. Here, we analyze the result of morphological microscopic observation conduct on Bulk Metallic Glass (BMG) with composition of a commercial liquid metal alloy (LM001B). The … …American Journal of Applied Sciences, Vol. 13, Issue 12 · 27 Dec 2016 · 8,942 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Content of Heavy Metal in the Labu Riverbed Sediments: An Assessment of the Level of Pollution Applying Sediment Quality Guidelines and Geoaccumulation IndexAhmad Shoaib Jahesh, Sahibin Abd Rahim, Wan Mohd Razli IdrisRiver bed sediments from thirteen (13) sampling stations, from Labu River were collected in June and December 2014. The aim is to identify the source and ascertain the current levels of heavy metal pollutions. The selected heavy metals (Cr, Cu, Fe, Ni, Zn, As, Cd and Pb) were analysed by using Inductively Couple Plasma Mass Spectrophotometry (ICPMS). Metals were statistically … …American Journal of Environmental Sciences, Vol. 12, Issue 4 · 10 Aug 2016 · 7,405 accessesView PDFCite