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39 results for “Metal Ions”
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Research ArticleOpen accessIn the abstractEffects of Metal Ion Concentrations on Lipid and Gamma Linolenic Acid Production by Cunninghamella sp. 2A1Farhila Muhid, Wan Nazatul Naziah Wan Nawi, Abdul Jalil Abdul Kader et al.The effects of different concentration of MgSO4.7H2O, FeCl3.6H2O, ZnSO4.7H2O, CuSO4.5H2O and MnSO4.5H2O on lipid and GLA production by Cunninghamella sp. 2A1 were studied in submerged culture fermentation. Cultivation was performed in 250 ml conical flask (100ml working volume), at 30°C and 250 rpm agitation for 120h. Mg2+, Fe2+ and Zn2+ have significant effect on lipid accumulation as inclusion of each … …OnLine Journal of Biological Sciences, Vol. 8, Issue 3 · 30 Sep 2008 · 7,440 accessesView PDFCite
Research ArticleOpen accessIn the abstractChelation Study of Captopril with Cd2+ and Pb2+ IonsMohammad Joshaghani, M.B. Gholivand, A.R. MosavatThe protonation constants of Captopril, (1-(3-mercapto-2-(S)-methyl-1-oxopropyl)-S(L) proline, (CPL) and stabilities of its two divalent metal ions Cd(II) and Pb(II) were determined potentiometrically in two different metal to ligand ratio 1:1 and 1:2 systems and in water and methanol-water binary mixtures using the computer Best program. Two protonation constants were obtained which were assigned to the carboxylic and thiol groups. All … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 3 · 30 Sep 2008 · 6,923 accessesView PDFCite
Research ArticleOpen accessIn the abstractBioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with BiosorptionKatarzyna ChojnackaThe paper presents the results of studies on kinetics and equilibrium of bioaccumulation process of Cr(III) ions by blue-green alga Spirulina sp. Bioaccumulation was described as the process that consists of two stages, passive (identical with biosorption) and active (accumulation inside the cells). The passive stage (similarly as biosorption itself) was found to be quick process and the subsequent active … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,702 accessesView PDFCite
Research ArticleOpen accessIn the abstractPotential of Agarose for Biosorption of Cu(II) In Aqueous SystemAnurag Pandey, Debabrata Bera, Anupam Shukla, Lalitagauri RayThe ability of agarose gel as an adsorbent for Cu(II) ions in aqueous solution was studied. The experiments were done as batch processes. Batch kinetics and isotherm studies were carried out under varying experimental conditions of contact time, Cu(II) ion concentration, adsorbent dose, temperature and pH. Adsorption equilibrium of agarose gel was reached within 4 h for agarose gel when … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 2 · 30 Jun 2007 · 6,829 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination of Trivalent Aluminum and Divalent Zinc in Drinking Waters by Differential Pulse Stripping VoltammetryAhmed HassanA Sensitive and precise differential- pulse stripping voltammetric method at static mercury dropping electrode (SMDE) has been applied to measure zinc(II) by anodic stripping at pH~¼4 and aluminum(III) by adsorptive cathodic stripping mode in presence of 1&Cross10-3M N,N` -bis-2-hydroxyethyl-2-amino-ethane sulphonic acid (BES) buffer at pH~7.1 and 2⨯10-5 M of alizarin red S as a ligand in drinking water samples purchased … …American Journal of Applied Sciences, Vol. 4, Issue 4 · 30 Apr 2007 · 7,585 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination of Zinc, Cadmium, Lead and Copper in Kakade, Anise, Cumin, Caraway Black Pepper Extracts Using Differential Pulse Anodic Stripping Voltammetry with Hanging Mercury Drop ElectrodeZ. R. KomyAn extraction and sensitive differential pulse anodic stripping voltammetric (DPASV) method at a hanging mercury drop electrode (HMDE) is described for the determination of Zn, Cu, Pb (mg g1) and Cd (ng g1) metal ions in water and 0.1 M HCl extracts for kakade, anise, cumin, caraway and black pepper. The procedure in water extract is based on the determination … …American Journal of Applied Sciences, Vol. 2, Issue 5 · 31 May 2005 · 6,875 accessesView PDFCite
Research ArticleOpen accessIn the abstractPreparation of Cellulosic Membrane Containing Pyrrolidone Moiety Via Radiation Induced Grafting and its Application in Wastewater TreatmentA. S. Aly, H. H. Sokker, A. Hashem, A. HebeishRadiation induced grafting of vinyl pyrrolidone onto cellulose wood pulp was carried out in heterogeneous and homogenous media using gamma radiation. Cellulose wood pulp was used in different forms; a) in a homogenous solution by dissolving the wood pulp in N,N- dimethylacetamide/Lithium chloride (DMAc/LiCl) mixture , b) in a membrane form, by precipitating the cellulose solution in water and c) … …American Journal of Applied Sciences, Vol. 2, Issue 2 · 28 Feb 2005 · 7,451 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordEffect of Mercuric Ion on the Oxidant Response and Calcium Ion in the Protoplasts of Arabidopsis ThalianaJun Xing, Rui Wu, Hui Yu et al.As a non-essential element for plant growth and development, the heavy metal mercury (Hg) has significant toxicity to plants. The aim of this study was to investigate the effect of mercuric ion (Hg2+) on the oxidant response and calcium ion (Ca2+) in the protoplasts of Arabidopsis thaliana. The protoplast cells were exposed to 5.0, 10.0, and 20.0 mmol/L Hg2+ for … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 29 Aug 2023 · 4,961 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordDesorption of Exchangeable Cations at Adsorption of Lead Ions by Chernozem in the Presence of Attendant AnionsT. M. Minkina, D. L. Pinskii, S. S. Mandzhieva et al.The effect of Cl–, Ac‾ and NO3‾ anions on the adsorption of Pb cations by an ordinary chernozem and desorption of exchangeable cations in the soil-solution system has been assessed under model laboratory conditions. It has been shown that the attendant anions affect the shape of the adsorption isotherms, which are described by the Langmuir equation. The greatest influence on … …American Journal of Environmental Sciences, Vol. 11, Issue 5 · 20 Oct 2015 · 6,931 accessesView PDFCite