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137 articles for “Metal concentration”
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Research ArticleOpen accessIn the abstractAdding Duckweed (Lemna minor) to Local Duck Diet: Determined Based on the Performance and Heavy MetalConcentration in their MeatSyamsuhaidi, Dwi Kusuma Purnamasari, Ryan Aryadin Putra, Uhud AbdullahAn experiment was conducted to determine whether addingduckweed fertilized with bioslurry to the diet corresponds to duckperformance and heavy metal concentration in their meat. The study wasdesigned using a completely randomized design. The treatments weredifferent levels of adding duckweed as a diet component, as follows: Basalfeed (control, no duckweed, TC), basal feed +2.5% duckweed (TL1), basalfeed +5% duckweed (TL2), basal … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 1 · 13 May 2025 · 5,847 accessesView PDFCite
Research ArticleOpen accessIn the abstractCyclodextrin Glucanotransferase Activity of Microbial Strains Isolated from Yam-Cultivation Soils in Northwestern BeninCyrille Alode Vodounon, Ténor Dias-Mendel Allode et al.β-Cyclodextrin, an industrially important oligosaccharide, is produced by microbial enzymes such as cyclodextrin glucanotransferase (CGTase). This study investigated ways to optimize the enzymatic activity of CGTase from Bacillus cereus, Bacillus pumilus, Bacillus brevis, and Bacillus subtilis strains isolated from soils in north-western Benin. Cyclization activity of CGTase and the influence of pH, temperature, and metal ions were assessed using conventional … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 21 Sep 2026 · 674 accessesView PDFCite
Research ArticleOpen accessIn the abstractHeavy Metals Content and Ecotoxicity of Sediments from the Congo RiverDidier Makonko Mabidi, Honoré Manyingu Mutwejile, Georgette Ngakiama Beni Ngweme et al.This research aimed to quantify the contamination of Congo River sediments by heavy metals and to evaluate their ecotoxicological effects in the municipalities of Maluku, Gombe, and Kinsuka, Kinshasa Province. Metal concentrations in sediments reached 340 mg kg-1 for Cr, 310 mg kg-1 for Cu, 826 mg kg-1 for Zn, 63 mg kg-1 for as, 1.9 mg kg-1 for Cd, … …American Journal of Environmental Sciences, Vol. 20, Issue 1 · 9 Nov 2024 · 6,052 accessesView PDFCite
Research ArticleOpen accessIn the abstractProtective Role of Ganoderma lucidum Polysaccharides Against Stress Induced by Heavy Metals in Caenorhabditis elegansHuixiu Ma, Dehui Dai, Guicai Chen, Weilian HuAli, H., Khan, E., & Ilahi, I. (2019). Environmental Chemistry and Ecotoxicology of Hazardous Heavy Metals: Environmental Persistence, Toxicity, and Bioaccumulation. Journal of Chemistry, 2019, 6730305. https://doi.org/10.1155/2019/6730305 Aljerf, L., & Aljerf, N. (2023). Food products quality and nutrition in relation to public. Balancing health and disease. Progress in Nutrition, 25(1), e2023024. https://doi.org/10.23751/pn.v25i1.13928 Aljerf, L., Williams, M., Ajong, A. B., Onydinma, … …American Journal of Biochemistry and Biotechnology, Vol. 20, Issue 2 · 18 May 2024 · 6,949 accessesView PDFCite
Research ArticleOpen accessIn the abstractLevels of Metals and Microbial Biomass in Cobalt Coleman Mine Tailings (Canada) Three Decades after Land ReclamationKabwe Nkongolo, Graeme Spiers et al.Investigations of restored metal contaminated tailings in Canada with regard to their long-term ability to sustain plant and associated microbiological populations are limited. The specific objectives of the present study were to assess (1) The current levels of total and bioavailable metals and (2) Microbial biomass in Cobalt Coleman mine tailings reclaimed in 1990. The level of microbial biomass was … …American Journal of Environmental Sciences, Vol. 19, Issue 1 · 20 Mar 2023 · 6,011 accessesView PDFCite
Research ArticleOpen accessIn the abstractExpression of Metallothionein-Like Protein 2B Gene Induced by Different Concentrations of Copper in White Spruce (Picea glauca)Megan McKergow, Kabwe NkongoloThe alterations to the expressions of metal transporter genes can induce metal ion uptake to maintain cell homeostasis when metal concentrations are low. Metallothioneins (MTs) are a class of low molecular mass (4-8 kDa), cysteine (Cys)-rich proteins that can bind metals via the thiol groups of their Cys residues. Studies on MT gene expressions in higher plants, such as conifers, … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 4 · 25 Dec 2022 · 5,124 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Heavy Metals Enrichment and Sources in Different Functional Areas of Sixian CityHaimin Su, Dongsheng Xu, Gao Yang, Peng SunTo investigate soil heavy metal pollution in different functional areas of Sixian City, 48 soil samples were collected in residential, industrial, green, and commercial areas. The concentrations of V, Cr, Zn, Cu, Pb, and as were determined by the geoaccumulation index method and the enrichment factor method, and their pollution levels were evaluated. At the same time, the possible sources … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 3 · 1 Aug 2022 · 5,548 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpatial Distribution and Evaluation of Heavy Metal Pollution in Soil Based on Three-Dimensional Model and Kriging InterpolationBaoshun Liu, Yonghong Zhang, Jun Yao, Jian SuSoil heavy metal pollution is an important content for soil environmental governance. Based on the three-Dimensional (3D) geological modeling technology and ordinary Kriging method, this study described and analyzed the soil pollution status and spatial distribution characteristics of a site in Zhongshan, Guangxi. The results showed that combining 3D geological model and the Kriging interpolation method can well evaluate soil … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 2 · 10 Jun 2022 · 6,147 accessesView PDFCite
Research ArticleOpen accessIn the abstractPollution Characteristics and Sources Analysis of Soil Heavy Metal in Taoyuan Coal Mine of Suzhou CityHaimin SuSoil is one of the most important resources and an important part of ecosystem in the development of human survival. The purposes of this study are to investigate concentration characteristics and sources analysis of heavy metals in Taoyuan coal mine of Suzhou City. 30 soil samples were collected and characterized for metal concentration (Cd, Cr, Cu, Pb, Zn and As), … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 29 Jan 2022 · 5,922 accessesView PDFCite
Research ArticleOpen accessIn the abstractPollution Risk Analysis of Heavy Metals at Illegal Mining Sites at Atiwa East District, GhanaSamuel Wiafe, Sarah Fanny Hackman Duncan, Boakye Ebenezer, Samuel Yeboah BaakoThis study aims at determining the level of pollution of heavy metals (Cr, Cu and Hg) in the soils of illegal mining sites in Atiwa East District of Ghana. The concentrations of Copper (Cu), Chromium (Cr), and Mercury (Hg) in the soils were determined using Atomic Absorption Spectrometry (AAS). The extent of heavy metal pollution and pollution risk assessment was … …Current Research in Geoscience, Vol. 12, Issue 1 · 2 Jun 2022 · 10,698 accessesView PDFCite