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Journal articles on the topic 'Cupric ions'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Raj, A. Kanni. "Synthesis of A Biodegradable Polymer from Tyrosol, Fluorescein and Caprolactone for Sensing and Removal of Cupric Ions from Pond Water." Oriental Journal Of Chemistry 40, no. 6 (2024): 1756–67. https://doi.org/10.13005/ojc/400628.

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Anthopogenic actions mostly contribute cupric ions to pond and other water bodies. These ions build rapidly in plants and animals, eventually entering the human food chain and causing public health problems. To address the health risks associated with these ions, a novel polymer molecule has been designed for sensing and removing them. This study entails creating a new polymer using tyrosol, fluorescein and caprolactone. This polymer has a strong selectivity for cupric ions, which causes a dramatic color shift for easy identification. It can detect even trace levels of copper ions in pond wate

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2

Ali, M. R., C. M. Mustafa, and M. Habib. "Effect of Molybdate, Nitrite and Zinc Ions on the Corrosion Inhibition of Mild Steel in Aqueous Chloride Media Containing Cupric Ions." Journal of Scientific Research 1, no. 1 (2008): 82–91. http://dx.doi.org/10.3329/jsr.v1i1.1053.

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An investigation has been conducted on the corrosion inhibition of mild steel by molybdate, nitrite and zinc ions in aqueous chloride media containing cupric ions. Molybdate inhibits mild steel corrosion in near neutral and alkaline (pH 6 and above) chloride media and accelerates corrosion in acidic media (below pH 6) both in the presence and absence of cupric ions. Nitrite inhibits mild steel corrosion in chloride media at pH 4.5 and above, but accelerates corrosion below pH 4.5 both in the presence and absence of cupric ions. Molybdate and nitrite act as a synergistic corrosion inhibitor in

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3

Georgieva, Tsveta, and Kalin Hristov. "ANTIOXIDANT CAPACITY OF EXTRACTS FROM BULGARIAN MEDICINAL PLANTS." Tradition and Modernity in Veterinary Medicine 8, no. 2 (2023): 26–33. https://doi.org/10.5281/zenodo.10338390.

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The aim of this research is to establish the redox–modulating capacity of extracts from 5 traditional Bulgarian medicinal plants: <i>Geranium sanguineum</i>, <i>Artemisia annua</i>, <i>Tribulus terrestris</i>, <i>Cichorium intybus</i> and <i>Cotinus coggygria</i>, comparing their antioxidant capacity at the same concentrations subsequently adding them to the composition of a sperm extender for rams. The methods used include ABTS•+ free radical reduction ability, DPPH• radical reduction, ferric iron reduction by the FRAP method, as well as reduction of cupric ions (Cu2+) to cupric ions (Cu1+) b

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4

Mohammed, Ard elshifa M. E., Nouf F. Al-Harby, Muneera Alrasheedi, Shaimaa M. Ibrahim, and Nadia A. Mohamed. "Cyanoguanidine-Modified Chitosan as an Efficacious Adsorbent for Removing Cupric Ions from Aquatic Solutions: Kinetics, Isotherms, and Mechanisms." Inorganics 13, no. 4 (2025): 116. https://doi.org/10.3390/inorganics13040116.

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One of the most critical environmental needs is to remove metal ions from industrial wastewater. In this investigation, chitosan modified by cyanoguanidine (CCs) was employed for the first time to adsorb cupric ions. The optimal conditions for eliminating cupric ions were adsorbent dose = 0.015 g, cupric ion concentration = 0.2 g L−1, pH = 6, and temperature = 25 °C. The adsorption kinetics fit the pseudo-second-order model, showing a value of correlation coefficient (R2) of 1.00, which is the highest. The experimental qe value was determined to be 99.05 mg g−1, which is comparable to 100 mg g

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5

Karlíčková, Jana, Kateřina Macáková, Michal Říha, et al. "Isoflavones Reduce Copper with Minimal Impact on IronIn Vitro." Oxidative Medicine and Cellular Longevity 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/437381.

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Isoflavones are commonly consumed in many Asian countries and have potentially positive effects on human being. Only a few and rather controversial data on their interactions with copper and iron are available to date. 13 structurally related isoflavones were tested in the competitive manner for their Cu/Fe-chelating/reducing properties. Notwithstanding the 5-hydroxy-4-keto chelation site was associated with ferric, ferrous, and cupric chelation, the chelation potential of isoflavones was low and no cuprous chelation was observed. None of isoflavones was able to substantially reduce ferric ion

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6

Demirkıran, Nizamettin, and G. Deniz Turhan Özdemir. "Kinetic Model for Dissolution of Cement Copper in Sulfuric Acid Solutions Containing Cupric Ions." Chemistry & Chemical Technology 15, no. 3 (2021): 395–402. http://dx.doi.org/10.23939/chcht15.03.395.

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In this paper, the dissolution kinetics of cement copper powder in sulfuric acid solutions containing cupric ions was examined. It was observed that the dissolution rate of copper increased with increasing the acid concentration, temperature, and stirring speed. It was determined that the dissolution rate of copper enhanced with increasing the cupric ion concentration up to 0.025 M. It was found that the temperature and concentration of cupric ion had more considerable effects on the dissolution of copper powder. The kinetic analysis of the process was performed, and it was observed that it fi

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7

Najim, Sarmad Talib. "Estimation of Mass Transfer Coefficient for Copper Electrowinning Process." Journal of Engineering 22, no. 4 (2016): 158–68. http://dx.doi.org/10.31026/j.eng.2016.04.11.

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Mass transfer was examined at a stationary rectangular copper electrode (cathode) by using the reduction of cupric ions as the electrochemical reaction. The influence of electrolyte temperature (25, 45, and 65 oC), and cupric ions concentration (4, 8, and 12 mM) on mass transfer coefficient were investigated by using limiting current technique. The mass transfer coefficient and hence the Sherwood number was correlated as Sh =

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8

Tang, Ying, and Xian Ping Xia. "Improvement of the Hydrophilicity of Cu/LDPE Composite and its Influence on the Release of Cupric Ions." Materials Science Forum 745-746 (February 2013): 46–52. http://dx.doi.org/10.4028/www.scientific.net/msf.745-746.46.

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t is of great importance to improve the hydrophilicity of Cu/LDPE composite, a material for a new type of IUDs (Intrauterine Devices). The aim of the study is not only satisfying the biocompatibility of medical devices implanted in human bodies, but also improving the releasing rate of cupric ions. In this study, various hydrophilic materials (sodium chloride, anhydrous glucose and soluble starch) were added respectively, in order to improve the hydrophilicity of Cu/LDPE composite. The microstructure of Cu/LDPE composite was characterized, moreover, the influence of the addition of these hydro

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9

SAGRIPANTI, JOSE-LUIS, and MARILYN M. LIGHTFOOTE. "Cupric and Ferric Ions Inactivate HIV." AIDS Research and Human Retroviruses 12, no. 4 (1996): 333–36. http://dx.doi.org/10.1089/aid.1996.12.333.

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10

SUDOH, MASAO, HIROSHI KAMEI, and SUSUMU NAKAMURA. "Donnan dialysis concentration of cupric ions." Journal of Chemical Engineering of Japan 20, no. 1 (1987): 34–40. http://dx.doi.org/10.1252/jcej.20.34.

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11

Huang, Shu-Wei, Yu-Feng Lin, Yu-Xuan Li, Cho-Chun Hu, and Tai-Chia Chiu. "Synthesis of Fluorescent Carbon Dots as Selective and Sensitive Probes for Cupric Ions and Cell Imaging." Molecules 24, no. 9 (2019): 1785. http://dx.doi.org/10.3390/molecules24091785.

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A novel sensing system has been designed for the detection of cupric ions. It is based on the quenched fluorescence signal of carbon dots (CDs), which were carbonized from poly(vinylpyrrolidone) (PVP) and L-Cysteine (CYS). Cupric ions interact with the nitrogen and sulfur atoms on surface of the CDs to form an absorbed complex; this results in strong quenching of the fluorescence of the CDs via a fast metal-to-ligand binding affinity. The synthesized water-soluble CDs also exhibited a quantum yield of 7.6%, with favorable photoluminescent properties and good photostability. The fluorescence in

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12

Zhong, Yin, Rui Sun, Yu Geng, et al. "N-Oxide polymer–cupric ion nanogels potentiate disulfiram for cancer therapy." Biomaterials Science 8, no. 6 (2020): 1726–33. http://dx.doi.org/10.1039/c9bm01841g.

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The zwitterionic water-soluble N-oxide polymer, poly[2-(N-oxide-N,N-dimethylamino)ethyl methacrylate], complexed cupric ions to form nanogels, which efficiently delivered copper ions to tumor and significantly potentiated antitumor activity of disulfiram.

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13

Misra, D. N. "Interaction of cupric ions with calcium hydroxylapatite." Materials Research Bulletin 23, no. 11 (1988): 1545–49. http://dx.doi.org/10.1016/0025-5408(88)90242-5.

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14

Han, Zhen Xing, Srini Raghavan, and Mark Beck. "Estimation of the Generation Rate of H· Radicals in a Megasonic Field Using an Electrochemical Technique." Solid State Phenomena 314 (February 2021): 181–85. http://dx.doi.org/10.4028/www.scientific.net/ssp.314.181.

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Radical formation and detection in aqueous solutions under acoustic irradiation are important during wet cleaning processes in semiconductor industries. Oxidizing radicals such as hydroxyl and hydroperoxyl radicals have been widely studied and characterized using fluorescence and chemiluminescence methods. Hydrogen radicals, which are strongly reducing in nature, have not received much attention. In this study, the rate of hydrogen radical generation in a megasonic field (0.93 MHz) was measured using an electrochemical technique. Specifically, the method is based on the reduction of cupric ion

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15

Bingol, Muhammed Nuri, and Ercan Bursal. "LC-MS/MS Analysis of Phenolic Compounds and In Vitro Antioxidant Potential of Stachys lavandulifolia Vahl. var. brachydon Boiss." International Letters of Natural Sciences 72 (November 2018): 28–36. http://dx.doi.org/10.18052/www.scipress.com/ilns.72.28.

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The identification and quantification of phenolic compounds of Stachys lavandulifolia Vahl. var. brachydon Boiss. by LC-MS/MS (Liquid Chromatography- tandem Mass Spectrometry) technique is the main purpose of the current study. The high concentrations of quinic acid (2534±12 ppb) and chlorogenic acid (1882±92 ppb) were detected by LC-MS/MS.. Another goal of the study is to evaluate the antioxidant activities of both ethanol and aqueous extracts of the plant material. The antioxidant potentials of extracts were determined by using five different in vitro methods including; ABTS (2,2′-Azino-bis-

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16

Bingol, Muhammed Nuri, and Ercan Bursal. "LC-MS/MS Analysis of Phenolic Compounds and <i>In Vitro</i> Antioxidant Potential of <i>Stachys lavandulifolia </i>Vahl. var.<i> brachydon </i>Boiss." International Letters of Natural Sciences 72 (November 7, 2018): 28–36. http://dx.doi.org/10.56431/p-5vckk2.

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The identification and quantification of phenolic compounds of Stachys lavandulifolia Vahl. var. brachydon Boiss. by LC-MS/MS (Liquid Chromatography- tandem Mass Spectrometry) technique is the main purpose of the current study. The high concentrations of quinic acid (2534±12 ppb) and chlorogenic acid (1882±92 ppb) were detected by LC-MS/MS.. Another goal of the study is to evaluate the antioxidant activities of both ethanol and aqueous extracts of the plant material. The antioxidant potentials of extracts were determined by using five different in vitro methods including; ABTS (2,2′-Azino-bis-

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17

Geesey, G. G., L. Jang, J. G. Jolley, M. R. Hankins, T. Iwaoka, and P. R. Griffiths. "Binding of Metal Ions by Extracellular Polymers of Biofilm Bacteria." Water Science and Technology 20, no. 11-12 (1988): 161–65. http://dx.doi.org/10.2166/wst.1988.0279.

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Exopolymers which anchor sessile bacteria to metallic surfaces exhibit the capacity to bind copper ions with high affinity. Ionized carboxyl groups on the polymers appear to participate in cupric ion binding. Formation of complexes between the polymers and cupric ions results in the release of protons from the polymer molecule. Attenuated total reflectance Fourier transform infrared spectroscopy showed that polymers composed of acidic polysaccharides promote ionization and deterioration of metallic copper surfaces. X-ray photoelectron spectroscopy studies revealed that the ionic state of the s

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18

Vareda, João P., Pedro M. C. Matias, José A. Paixão, Dina Murtinho, Artur J. M. Valente, and Luisa Durães. "Chitosan–Silica Composite Aerogel for the Adsorption of Cupric Ions." Gels 10, no. 3 (2024): 192. http://dx.doi.org/10.3390/gels10030192.

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A chitosan–silica hybrid aerogel was synthesized and presented as a potential adsorbent for the purification of cupric ion-contaminated media. The combination of the organic polymer (chitosan), which can be obtained from fishery wastes, with silica produced a mostly macroporous material with an average pore diameter of 33 µm. The obtained aerogel was extremely light (56 kg m−3), porous (96% porosity, 17 cm3 g−1 pore volume), and presented a Brunauer–Emmett–Teller surface area (SBET) of 2.05 m2 g−1. The effects of solution pH, aerogel and Cu(II) concentration, contact time, and counterion on cu

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19

Ibrahim, Marwa H., and Sarmad T. Najim. "Experimental Investigation of Mass Transfer for Copper Reduction by Weight Difference Technique." Iraqi Journal of Chemical and Petroleum Engineering 17, no. 4 (2016): 105–11. http://dx.doi.org/10.31699/ijcpe.2016.4.10.

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An experimental analysis was included to study and investigate the mass transport behavior of cupric ions reduction as the main reaction in the presence of 0.5M H2SO4 by weight difference technique (WDT). The experiments were carried out by electrochemical cell with a rotating cylinder electrode as cathode. The impacts of different operating conditions on mass transfer coefficient were analyzed such as rotation speeds 100-500 rpm, electrolyte temperatures 30-60 , and cupric ions concentration 250-750 ppm. The order of copper reduction reaction was investigated and it shows a first order reacti

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20

Liu, Ting, Chen Li, Beilei Yuan, Yang Chen, Haoming Wei, and Bingqiang Cao. "Dopant compensation in p-type doped MAPb₁₋_xCu_xI₃ alloyed perovskite crystals." Applied Physics Letters 121, no. 1 (2022): 012102. http://dx.doi.org/10.1063/5.0095370.

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Tuning the optical and electrical properties of semiconductors by designed doping is the basis of most energy-related semiconductor optoelectronic devices. In this Letter, we report the dopant compensation effect of P-type doped MAPb1− x Cu xI3 alloyed perovskite crystals. MAPb1− xCu xI3 single crystals were prepared by the inverse temperature crystallization method using cupric chloride (CuCl2) as the doping source. By XRD, XPS, STEM, and photoluminescence (PL) spectra analyses, we demonstrate that the doped cupric (Cu2+) ions can partially substitute lead (Pb2+) ions and form Cu–Pb based cry

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21

Ferrara, Skylar J., Bo Wang, and James P. Donahue. "An S4-symmetric mixed-valent decacopper cage comprised of [CuII(L-S2N2)] complexes bridged by CuI(MeCN)n (n = 1 or 2) cations." Dalton Transactions 45, no. 7 (2016): 2997–3002. http://dx.doi.org/10.1039/c5dt04359j.

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Oxidative addition of 1,2,11,12-tetrathia-5,8,15,19-tetra(N-methylamino)cycloicosane to [Cu(MeCN)<sub>4</sub>][BF<sub>4</sub>] yields an S<sub>4</sub>-symmetric decacopper cage compound with four cupric ions in distorted square planar bis(amino) bis(thiolato) ligand environments bridged by six cuprous ions with MeCN ligands.

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22

Beiza, Luis, Víctor Quezada, Evelyn Melo, and Gonzalo Valenzuela. "Electrochemical Behaviour of Chalcopyrite in Chloride Solutions." Metals 9, no. 1 (2019): 67. http://dx.doi.org/10.3390/met9010067.

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Due to the depletion of oxidized copper ores, it necessitates the need to focus on metallurgical studies regarding sulphide copper ores, such as chalcopyrite. In this research, the electrochemical behaviour of chalcopyrite has been analysed under different conditions in order to identify the parameters necessary to increase the leaching rates. This was carried out through cyclic voltammetry tests at 1 mV/s using a pure chalcopyrite macro-electrode to evaluate the effect of scan rate, temperature, and the addition of chloride, cupric, and ferrous ions. Lastly, the feasibility of using seawater

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23

SEMMOUD, RAHMOUNA, SANAA NAIT-TAHAR, and MOHAMED AMINE DIDI. "Extraction optimization of cupric ions by cloud point." journal of ultra chemistry 15, no. 3 (2019): 23–29. http://dx.doi.org/10.22147/juc/150301.

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24

Bhalla, Parul, Nisha Tomer, Pooja Bhagat, and Rajesh Malhotra. "Chromone functionalized pyridine chemosensor for cupric ions detection." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 264 (January 2022): 120279. http://dx.doi.org/10.1016/j.saa.2021.120279.

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25

Cabral, JoÃ£o P. S. "The antibacterial action of cupric ions inPseudomonas syringae." FEMS Microbiology Letters 79, no. 2-3 (1991): 303–8. http://dx.doi.org/10.1111/j.1574-6968.1991.tb04546.x.

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26

Agranovich, A. M., E. V. Isaeva, N. A. Dobrynina, L. I. Martynenko, and V. I. Spitsyn. "Complexation of ferric and cupric ions with pyridoxal." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 35, no. 7 (1986): 1519–21. http://dx.doi.org/10.1007/bf00954839.

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27

Long, Xiaoyun, Lifen He, Yan Zhang, and Mingqiao Ge. "Multicomponent Composite Emulsion Treated Geotextile on Landfill with Improved Long-Term Stability and Security." Journal of Engineered Fibers and Fabrics 13, no. 3 (2018): 155892501801300. http://dx.doi.org/10.1177/155892501801300307.

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Polypropylene geotextiles were treated with multicomponent composite emulsion consist of polytetrafluoroethylene (PTFE), nona-silica and fluorous acrylate. After process of treatment, the treated geotextiles showed greater long-term stability and security than untreated geotextiles on the landfill slope. Firstly, the surface of fibers was investigated by scanning electron microscopy (SEM). Composite thin film was found on them, indicating the successful attachment of ternary composite agents on fibers through pad-drying method. Subsequently, the effect of weathering stability and metallic ions

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28

Lončarević, Andrea, Marica Ivanković, and Anamarija Rogina. "Electrosprayed Chitosan–Copper Complex Microspheres with Uniform Size." Materials 14, no. 19 (2021): 5630. http://dx.doi.org/10.3390/ma14195630.

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Chitosan-based nano- and microspheres have shown great potential in a broad range of applications, including drug delivery, bone tissue engineering, wastewater treatments, etc. The preparation of uniformly sized spheres with controlled morphology and microstructure is still a challenge. This work investigates the influence of cupric ions (Cu2+) on the size, shape, morphology and stability of electrosprayed chitosan–copper (CHT–Cu2+) complex microspheres, using chitosans with different degrees of deacetylation. The dynamic viscosity of CHT–Cu2+ solutions was measured by Höppler viscometer, whil

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29

Rahmani, Oumkelthoum, Bachir Bouzid, and Abdenacer Guibadj. "Extraction and characterization of chitin and chitosan: applications of chitosan nanoparticles in the adsorption of copper in an aqueous environment." e-Polymers 17, no. 5 (2017): 383–97. http://dx.doi.org/10.1515/epoly-2016-0318.

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AbstractThe main objective of the present work is to develop and characterize a new generation of adsorptive gelled porous bead supports made from nanoparticles of chitosan, bentonite and alginate. There were subsequently used in the purification of water synthetically polluted with cupric ions. The multiple experiments carried out on the adsorption of copper resulted in an equilibrium time reached after 10 min with an elimination percentage of 86%. Adsorption kinetics is better described by the expression of the second-order model whereas the adsorption isotherm is satisfactorily described by

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30

Nenkova, Sanchi, Peter Velev, Mirela Dragnevska, Diyana Nikolova, and Kiril Dimitrov. "Lignocellulose nanocomposite containing copper sulfide." BioResources 6, no. 3 (2011): 2356–65. http://dx.doi.org/10.15376/biores.6.3.2356-2365.

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Copper sulfide-containing lignocellulose nanocomposites with improved electroconductivity were obtained. Two methods for preparing the copper sulfide lignocellulose nanocomposites were developed. An optimization of the parameters for obtaining of the nanocomposites with respect to obtaining improved electroconductivity, economy, and lower quantities and concentration of copper and sulfur ions in waste waters was conducted. The mechanisms and schemes of delaying and subsequent connection of copper sulfides in the lignocellulosic matrix were investigated. The modification with a system of 2 comp

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31

Babagil, Aynur, Esen Tasgin, Hayrunnisa Nadaroglu, and Haluk Caglar Kaymak. "Antioxidant and Antiradical Activity of Beetroot (Beta vulgarisL. var.conditivaAlef.) Grown Using Different Fertilizers." Journal of Chemistry 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/7101605.

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Fertilizers in different nitrogen forms (calcium ammonium nitrate (CAN), urea, ammonium sulfate (AS), and ammonium nitrate (AN)) and their doses (50, 100, and 150) for beetroot (BT) (Beta vulgarisL. var.conditivaAlef.) and the antioxidant and antiradical activities in the lyophilized water and alcohol extracts of BT were evaluated. In order to evaluate antioxidant and radical removing activities of BT roots, total phenolic compound amount assignment, total flavonoids amount assignment, method of Fe3+-Fe2+reduction activity using ferric cyanate reduction, cupric ions (Cu2+) reducing capacity wi

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32

Moberg, Lars-Erik, Björn Appelgren, and Nils O. Sjöstrand. "Effects of cupric ions on isolated guinea-pig ileum." Acta Odontologica Scandinavica 43, no. 4 (1985): 223–29. http://dx.doi.org/10.3109/00016358509046502.

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33

Blaquiere, Colette, and Patrick Sharrock. "Analysis of spin-labelled glycylglycine interactions with cupric ions." Transition Metal Chemistry 11, no. 11 (1986): 410–14. http://dx.doi.org/10.1007/bf00623419.

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34

Hojima, Yoshio, Babak Behta, Anne M. Romanic, and Darwin J. Prockop. "Cadmium ions inhibit proollagen C-proteinase and cupric ions inhibit procollagen N-proteinase." Matrix Biology 14, no. 2 (1994): 113–20. http://dx.doi.org/10.1016/0945-053x(94)90001-9.

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35

Scheck, Heather J., and Jay W. Pscheidt. "Effect of Copper Bactericides on Copper-Resistant and -Sensitive Strains of Pseudomonas syringae pv. syringae." Plant Disease 82, no. 4 (1998): 397–406. http://dx.doi.org/10.1094/pdis.1998.82.4.397.

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Fourteen formulations of copper-based bactericides were evaluated for their efficacy in reducing populations of copper-resistant and -sensitive strains of Pseudomonas syringae pv. syringae growing on tissue-cultured lilac and of copper-sensitive strains of this pathogen on field-grown lilac. The amount of free cupric ions (Cu2+) in solution was the only predictor of formulation efficacy, but this variable could not be estimated from the metallic copper content of the product. Relative to nontreated controls, all copper-based bactericides reduced the population size of copper-sensitive strains

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36

Tee, Oswald S., and N. Rani Iyengar. "Metal ion catalysis of the decomposition of transient 2-carboxy-2,5-cyclohexadienones in aqueous solution." Canadian Journal of Chemistry 66, no. 5 (1988): 1194–98. http://dx.doi.org/10.1139/v88-195.

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Bromide ion induced debromination of the anion of 4-bromo-4-methyl-2,5-cyclohexadienone-2-carboxylic acid (1) is catalyzed by cupric ions and ferric ions. Similarly, the enolization of the anion of the benzocyclohexadienone 3, which is formed during the bromination of 1-naphthol-2-carboxylic acid, is catalyzed by some metal ions. The origin of the catalysis in these reactions is strong metal ion binding to the incipient dianion products that are of the salicylate type. Evidence for this is that the efficiency of the metal (and hydrogen) ion catalysis parallels the stability of the analogous co

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37

Ibarra-Galvan, Valentin, Alejandro López-Valdivieso, Xiong Tong, and Yi-Qi Cui. "Role of oxygen and ammonium ions in silver leaching with thiosulfate–ammonia–cupric ions." Rare Metals 33, no. 2 (2013): 225–29. http://dx.doi.org/10.1007/s12598-013-0107-0.

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38

Hu, J., F. Gan, S. Triantafyllidou, C. K. Nguyen, and M. A. Edwards. "Copper-Induced Metal Release from Lead Pipe into Drinking Water." Corrosion 68, no. 11 (2012): 1037–48. http://dx.doi.org/10.5006/0616.

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The effect of added cupric ions (0 mg/L to 5 mg/L Cu+2) on possible deposition corrosion of lead pipe was investigated in bench-scale experiments under flowing and stagnant water conditions. Under stagnation the presence of cupric ions in the water feeding lead pipes marginally increased lead release into the water, but under continuous recirculation it could increase lead release by orders of magnitude. Other bench-scale experiments investigated galvanic corrosion between lead and copper pipes under stagnation, confirming that water chemistry (particularly the chloride-to-sulfate mass ratio [

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39

Sugio, Tsuyoshi, Yoshihiko Tsujita, Kenji Inagaki, and Tatsuo Tano. "Reduction of Cupric Ions with Elemental Sulfur by Thiobacillus ferrooxidans." Applied and Environmental Microbiology 56, no. 3 (1990): 693–96. http://dx.doi.org/10.1128/aem.56.3.693-696.1990.

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40

Ohashi, S., Y. Uchida, A. Mclean, and M. Iwase. "Oxidation-Reduction Equilibria of Cuprous/Cupric Ions In Oxide Melts." Canadian Metallurgical Quarterly 39, no. 4 (2000): 397–404. http://dx.doi.org/10.1179/cmq.2000.39.4.397.

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41

Shen, Jiacheng, and Zdravko Duvnjak. "Adsorption Isotherms for Cupric and Cadmium Ions on Corncob Particles." Separation Science and Technology 40, no. 7 (2005): 1461–81. http://dx.doi.org/10.1081/ss-200053319.

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Cao, Bianmei, Tingfei Xi, and Yudong Zheng. "Release behavior of cupric ions for TCu380A and TCu220C IUDs." Biomedical Materials 3, no. 4 (2008): 044114. http://dx.doi.org/10.1088/1748-6041/3/4/044114.

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Thiebaut, J. M., G. Roussy, K. Chlihi, and J. Bessiere. "Dielectric study of the activation of blende with cupric ions." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 262, no. 1-2 (1989): 131–44. http://dx.doi.org/10.1016/0022-0728(89)80017-8.

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Blaquiere, Colette, and Patrick Sharrock. "Magnetic interactions in spin-labelled glycine complexee to cupric ions." Transition Metal Chemistry 11, no. 11 (1986): 418–22. http://dx.doi.org/10.1007/bf00623422.

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Tanaka, Mitsuo, Toshihiro Iio, and Toshikazu Tabata. "Effect of cupric ions on serum and liver cholesterol metabolism." Lipids 22, no. 12 (1987): 1016–19. http://dx.doi.org/10.1007/bf02536442.

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Shen, Jiacheng, and Zdravko Duvnjak. "Adsorption kinetics of cupric and cadmium ions on corncob particles." Process Biochemistry 40, no. 11 (2005): 3446–54. http://dx.doi.org/10.1016/j.procbio.2005.02.016.

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Parvin, Mst Shamima, Jakub Chlebek, Anna Hošťálková, et al. "Interactions of Isoquinoline Alkaloids with Transition Metals Iron and Copper." Molecules 27, no. 19 (2022): 6429. http://dx.doi.org/10.3390/molecules27196429.

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Abstract:

Data on alkaloid interactions with the physiologically important transition metals, iron and copper, are mostly lacking in the literature. However, these interactions can have important consequences in the treatment of both Alzheimer’s disease and cancer. As isoquinoline alkaloids include galanthamine, an approved drug for Alzheimer’s disease, as well as some potentially useful compounds with cytostatic potential, 28 members from this category of alkaloids were selected for a complex screening of interactions with iron and copper at four pathophysiologically relevant pH and in non-buffered con

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Bahranowski, K., R. Dula, M. Łabanowska, and E. M. Serwicka. "ESR Study of Cu Centers Supported on Al-, Ti-, and Zr-Pillared Montmorillonite Clays." Applied Spectroscopy 50, no. 11 (1996): 1439–45. http://dx.doi.org/10.1366/0003702963904809.

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Cu-doped Al-, Ti-, and Zr-pillared montmorillonites obtained by various procedures have been investigated with the aid of electron spin resonance (ESR). The major species present in pillared montmorillonites exchanged with copper at low pH are physisorbed square planar tetraaquo-complexes [Cu(H2O)4]2+. Only at the surface of uncalcined Al pillars does a chemisorption of copper ions occur, giving an inner-sphere square planar complex [Cu(AlO) n (H2O)4- n] x. Calcination of the samples at 673 K brings about a significant change of the Cu2+ ion environment reflected in the change of ESR parameter

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Tang, Ying, Yun Wang, and Xian Ping Xia. "Influence of the Particle Size of LDPE on the Performance of Cu/LDPE Composites." Advanced Materials Research 833 (November 2013): 330–34. http://dx.doi.org/10.4028/www.scientific.net/amr.833.330.

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The Cu/LDPE composites were characterized through the tests of micro-structure, mechanical property, surface hydrophilicity and releasing rate of cupric ions, in order to study the influence of the particle size of LDPE on the performance of Cu/LDPE composites. The results indicate that, with decreasing of the particle size of LDPE, Cu/LDPE composites have greater value of elongation at break and releasing rate of cupric, but smaller value of tensile strength and elasticity modulus, and the influence on surface hydrophilicity and crystalline is little. It is considered that the influence of th

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Li, Xican, Xiaozhen Wang, Dongfeng Chen, and Shuzhi Chen. "Antioxidant Activity and Mechanism of Protocatechuic Acid in vitro." Functional Foods in Health and Disease 1, no. 7 (2011): 232. http://dx.doi.org/10.31989/ffhd.v1i7.127.

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Background: Protocatechuic acid (PCA) is a natural phenolic acid widely distributed in plants and is considered as an active component of some traditional Chinese herbal medicines such as Cibotium barometz (L.) J.Sm, Stenoloma chusanum (L.) Ching, Ilex chinensis Sims. PCA was reported to possess various pharmacological effects which may be closely correlated with its antioxidant activities. However, the antioxidant of PCA has not been investigated systematically yet. Methods: In the study, the antioxidant activities of protocatechuic acid were measured in vitro using various antioxidant assays

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