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Journal articles on the topic 'Cobalt'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Catalani, S., MC Rizzetti, A. Padovani, and P. Apostoli. "Neurotoxicity of cobalt." Human & Experimental Toxicology 31, no. 5 (2011): 421–37. http://dx.doi.org/10.1177/0960327111414280.

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Cobalt exerts well-known and documented toxic effects on the thyroid, heart and the haematopoietic system, in addition to the occupational lung disease, allergic manifestations and a probably carcinogenic action. Cobalt neurotoxicity is reported in isolated cases, and it has never been systematically treated. Bilateral optic atrophy and retinopathy, bilateral nerve deafness and sensory-motor polyneuropathy have been described long ago as a result of chronic occupational exposure to cobal powder or during long-term treatment of anaemia with cobalt chloride. Recently, some patients with high lev

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2

Ved, Marina, Nikolay Sakhnenko, Marina Glushkova, and Tetiana Bairachna. "Electrodeposition of Functional Cobalt-Silver and Cobalt-Tungstean Alloys." Chemistry & Chemical Technology 8, no. 3 (2014): 275–81. http://dx.doi.org/10.23939/chcht08.03.275.

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3

Juzikis, P., L. Gudavičiūtŧ, and E. Matulionis. "Ruthenium-Cobalt Alloy Electrodeposition." Platinum Metals Review 39, no. 2 (1995): 68–71. http://dx.doi.org/10.1595/003214095x3926871.

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Since little has been written about ruthenium alloy plating, the present work sets out to provide data on the electrodeposition of ruthenium-cobalt alloys, using a sulphate-sulphamate electrolyte. Some operating conditions have been obtained for the production of thin crack-free coatings of ruthenium-cobult alloys.

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4

Yusifova, N. V., A. M. Pashajanov, N. I. Ismailov, and T. M. Ismailov. "SOLVENT EXTRACTION OF COBALT FROM LEACHING SOLUTIONS OF COBALT ORES." Azerbaijan Chemical Journal, no. 2 (June 19, 2023): 178–85. http://dx.doi.org/10.32737/0005-2531-2023-2-178-185.

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The extraction of cobalt with amines has been studied in the most detail. The article presents experimental data obtained in the study of cobalt extraction from leaching solutions of cobalt ores with a mixture of tributylamine (TBA) in toluene and hexane. The dependence of the extraction degree and distribution coefficient of cobalt on pH, time, and the ratio of aqueous and organic phases have been studied. It has been shown that cobalt is maximally extracted with TBA in toluene in the pH range of 3-5 for no more than 5-10 minutes; in this case, 98% of cobalt extraction is achieved. The develo

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5

Rosert, R. "Cobalt-based alloys for surfacing." Paton Welding Journal 2015, no. 6 (2015): 101–6. http://dx.doi.org/10.15407/tpwj2015.06.23.

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6

Harwell, David E., Juliet Nabakka, Carolyn B. Knobler, and M. Frederick Hawthorne. "Synthesis and structural characterization of an ether-bridged cobalta-bis(dicarbollide): a model for Venus flytrap cluster reagents." Canadian Journal of Chemistry 73, no. 7 (1995): 1044–49. http://dx.doi.org/10.1139/v95-129.

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The synthesis of bis-(1-carboranylmethyl) ether was first published in 1963; however, its subsequent complexation with a transition metal was never reported. We now report the complexation of cobalt and the corresponding X-ray structure for the triphenylmethylphosphonium salt of the cobalta-bis(carboranylmethyl) ether. The cobalt complex crystallized in the monoclinic space group C2/c with a = 21.729(6) Å, b = 9.845(2) Å, c = 35.565(9) Å, β = 105.363(9)°, V = 7336 Å3, and Z = 8. Data were collected using CuKα radiation, to a maximum 2θ = 115°, giving 4123 unique reflections, and the structure

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7

McLaren, R. G., D. M. Lawson, R. S. Swift, and D. Purves. "The effects of cobalt additions on soil and herbage cobalt concentrations in some S.E. Scotland pastures." Journal of Agricultural Science 105, no. 2 (1985): 347–63. http://dx.doi.org/10.1017/s0021859600056409.

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SUMMARYCobalt, as cobalt sulphate and cobalt-EDTA, was applied to pastures at 15 sites in south-east Scotland. Herbage cobalt and extractable soil cobalt concentrations were monitored at these sites over the period 1978–81. Although the sites were located in a generally cobalt-deficient area, considerable variation between sites was observed both in the concentration of cobalt present in untreated pasture and in the response to cobalt additions. There was no significant correlation between herbage cobalt concentrations and soil cobalt status as determined by acetic acid extraction. Application

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8

Wadepohl, Hubert, Wolfgang Galm, Hans Pritzkow, and Andreas Wolf. "Cyclopentadienyl Cobalt Complexes of Cobalta-pentalenes: Products Formed by Reaction of (?-Cyclopentadienylidene) Cobalt Complexes with Silylalkynes." Angewandte Chemie International Edition in English 31, no. 8 (1992): 1058–60. http://dx.doi.org/10.1002/anie.199210581.

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9

Andersson, Lena, Fredrik Wahlqvist, Ing-Liss Bryngelsson, Håkan Westberg, and Per Vihlborg. "92 Dermal and inhalable cobalt exposure at Swedish hard metal plants." Annals of Work Exposures and Health 68, Supplement_1 (2024): 1. http://dx.doi.org/10.1093/annweh/wxae035.039.

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Abstract Introduction Manufacture of hard metal is one major use of cobalt in the work environment. Known health effects of cobalt exposure is asthma, hard metal lung disease, contact allergy and increased risk of cancer. Recent studies has shown that cobalt exposure may occur by penetration through skin even though it is mainly absorbed from the pulmonary tract via inhalation. The relationships between exposure to inhalable cobalt in air and on skin and the uptake in blood and urine and the association between dermal symptoms and dermal exposure was investigated. Methodology Cobalt exposure a

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10

Underwood, Eric J. "Cobalt." Nutrition Reviews 33, no. 3 (2009): 65–69. http://dx.doi.org/10.1111/j.1753-4887.1975.tb06019.x.

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11

SCHWAB, EKKEHARD. "COBALT." Chemical & Engineering News 81, no. 36 (2003): 80. http://dx.doi.org/10.1021/cen-v081n036.p080.

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12

Jacobs, Peter, and Lucille Wood. "Cobalt." Disease-a-Month 49, no. 10 (2003): 615–18. http://dx.doi.org/10.1016/j.disamonth.2003.08.005.

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13

Barceloux, Donald G., and Donald Barceloux. "Cobalt." Journal of Toxicology: Clinical Toxicology 37, no. 2 (1999): 201–16. http://dx.doi.org/10.1081/clt-100102420.

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14

Fowler, Joseph F. "Cobalt." Dermatitis 27, no. 1 (2016): 3–8. http://dx.doi.org/10.1097/der.0000000000000154.

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15

Hay, R. W. "Cobalt." Coordination Chemistry Reviews 71 (August 1986): 37–112. http://dx.doi.org/10.1016/0010-8545(86)80020-0.

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16

Davies, Michael B. "Cobalt." Coordination Chemistry Reviews 124, no. 1-2 (1993): 107–81. http://dx.doi.org/10.1016/0010-8545(93)80006-q.

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17

Cole, Thomas B. "Cobalt." JAMA 311, no. 12 (2014): 1184. http://dx.doi.org/10.1001/jama.2013.279404.

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18

Fairweather-Tait, Susan. "Cobalt." Biomedical & Life Sciences Collection 2025, no. 4 (2025): e1006620. https://doi.org/10.69645/ehmw8265.

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19

Dormans, G. J. M., G. J. B. M. Meekes, and E. G. J. Staring. "OMCVD of cobalt and cobalt silicide." Journal of Crystal Growth 114, no. 3 (1991): 364–72. http://dx.doi.org/10.1016/0022-0248(91)90054-9.

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20

Jenkinson, Mark R. J., R. M. Dominic Meek, Rothwell Tate, Sandy MacMillan, M. Helen Grant, and Susan Currie. "Cobalt-induced cardiomyopathy – do circulating cobalt levels matter?" Bone & Joint Research 10, no. 6 (2021): 340–47. http://dx.doi.org/10.1302/2046-3758.106.bjr-2020-0414.r2.

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Elevated levels of circulating cobalt ions have been linked with a wide range of systemic complications including neurological, endocrine, and cardiovascular symptoms. Case reports of patients with elevated blood cobalt ions have described significant cardiovascular complications including cardiomyopathy. However, correlation between the actual level of circulating cobalt and extent of cardiovascular injury has not previously been performed. This review examines evidence from the literature for a link between elevated blood cobalt levels secondary to metal-on-metal (MoM) hip arthroplasties and

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21

Noble, Abigail E., Daniel C. Ohnemus, Nicholas J. Hawco, Phoebe J. Lam, and Mak A. Saito. "Coastal sources, sinks and strong organic complexation of dissolved cobalt within the US North Atlantic GEOTRACES transect GA03." Biogeosciences 14, no. 11 (2017): 2715–39. http://dx.doi.org/10.5194/bg-14-2715-2017.

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Abstract. Cobalt is the scarcest of metallic micronutrients and displays a complex biogeochemical cycle. This study examines the distribution, chemical speciation, and biogeochemistry of dissolved cobalt during the US North Atlantic GEOTRACES transect expeditions (GA03/3_e), which took place in the fall of 2010 and 2011. Two major subsurface sources of cobalt to the North Atlantic were identified. The more prominent of the two was a large plume of cobalt emanating from the African coast off the eastern tropical North Atlantic coincident with the oxygen minimum zone (OMZ) likely due to reductiv

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22

Ramesh, Thimmasandra Narayan. "Effect of Substituents on the Electrochemical Reversible Discharge Capacity of Cobalt Hydroxide Electrodes." Journal of New Materials for Electrochemical Systems 18, no. 2 (2015): 091–93. http://dx.doi.org/10.14447/jnmes.v18i2.375.

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Cobalt hydroxide, nickel hydroxide-cobalt hydroxide and zinc oxide-cobalt hydroxide biphasic mixtures were prepared by precipitation method. In spite of structural similarities exhibited by nickel hydroxide and cobalt hydroxide samples, former is a good electrode material and exchanges 1e-/Ni while latter does not show any reversibility. Presence of small amount of other metal ions such as nickel or zinc in the lattice of cobalt hydroxide or as a biphasic mixture of cobalt hydroxide-nickel hydroxide/cobalt hydroxide- zinc oxide, exchange up to 0.2 to 0.24e- exchange compared to pure cobalt hyd

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23

Yang, Jing, Hongwei Liu, Wayde N. Martens, and Ray L. Frost. "Synthesis and Characterization of Cobalt Hydroxide, Cobalt Oxyhydroxide, and Cobalt Oxide Nanodiscs." Journal of Physical Chemistry C 114, no. 1 (2009): 111–19. http://dx.doi.org/10.1021/jp908548f.

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24

Pour, Ali Nakhaei, and Mohammadreza Housaindokht. "Effects of metallic cobalt crystal phase on catalytic activity of cobalt catalysts supported on carbon nanotubes in Fischer–Tropsch synthesis." Progress in Reaction Kinetics and Mechanism 44, no. 4 (2019): 316–23. http://dx.doi.org/10.1177/1468678319862438.

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The effects of metallic cobalt crystal phase on catalytic activity of cobalt catalysts in the Fischer–Tropsch synthesis were investigated in a continuous spinning basket reactor. The cobalt catalysts were prepared by impregnation of the cobalt active phase in a microemulsion system on multiwall carbon nanotube supports. A series of cobalt catalysts with different Co particle sizes was prepared by variation of the water-to-surfactant molar ratio from 2 to 12 in the microemulsion system. The X-ray diffraction results validate a complex composition of cobalt phases containing cobalt oxides and me

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25

Li, Lin Bo, Juan Qin Xue, Tao Hong, Jun Yang, and Xing Wang. "Separation of Cobalt from Zinc Sulfate Solution by Novel Oxidant." Materials Science Forum 695 (July 2011): 145–48. http://dx.doi.org/10.4028/www.scientific.net/msf.695.145.

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The separation of cobalt from zinc sulfate solutions by oxidation-precipitation process using peroxy-monosulfuric acid as oxidant has been presented according to the technological conditions of removal of cobalt from zinc electrolyte. After investigating the important parameters governing the separation of cobalt and their effect on the separation process, the optimal parameters of oxidation precipitation of cobalt were determined, the oxidation precipitation percent of cobalt was up to 90% under the conditions. The XRD analysis results of precipitates demonstrated that the precipitate was cob

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26

Zhou, Gui Zhong, Zhao Feng Wang, Xuan Wang, and Shao Xiang Li. "Recycling of Waste Hard Alloy via Electrochemical Dissolution Method." Advanced Materials Research 610-613 (December 2012): 2263–67. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2263.

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Electrochemical dissolution method was used to achieve the recycling of waste hard alloy. Tungsten, cobalt powder and cobalt salts can be obtained through the control of suitable conditions of electric dissolution process ,such as cleaning of waste hard alloy, electric dissolution of waste hard alloy, knocking the basket, treatment of cobalt chloride etc. Tungsten and cobalt chloride solution can be obtained directly by this method, and thus to obtain the cobalt powder and cobalt salts. Recovery rate of WC and cobalt were above 98% and 92-95%.

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27

Robson, AD, and K. Snowball. "Response of narrow-leafed lupins to cobalt application in relation to cobalt concentration in seed." Australian Journal of Experimental Agriculture 27, no. 5 (1987): 657. http://dx.doi.org/10.1071/ea9870657.

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The effect of cobalt concentration in seeds on the response of narrow-leafed lupins to applied cobalt was examined in a glasshouse experiment. As seed cobalt concentrations increased from 6 to 400 in ng/g, the magnitude of the response to applied cobalt in both shoot weight and nitrogen concentrations in shoots decreased. However, even with a concentration of 400 ng/g, there was still a 10% increase in shoot weight with cobalt application. Cobalt concentrations shoots were a poor indicator of the adequacy of cobalt supply.

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28

Yan, Kang, Xue Yi Guo, Qing Hua Tian, and Dong Li. "Analysis of Cobalt Substance Flow through China in Year of 2012." Materials Science Forum 814 (March 2015): 539–45. http://dx.doi.org/10.4028/www.scientific.net/msf.814.539.

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Substance flow analysis (SFA) of cobalt in China was carried out to analyze cobalt flows and stocks by using static SFA. Cobalt can be widely used in industry due to its high-melting point, high-strength, and well magnetism. In this static model, the relationship among inflows, outflows and stocks throughout the whole cobalt life-cycle in China were identified. According to the static model, the amount was calculated in the form of cobalt metal, in 2012, 29784t of cobalt was produced, and 30700t of cobalt was imported, 9400t exported and domestic consumption was 31700t, 9000t stocks of cobalt

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29

Yusifova, N. V. "THERMODYNAMIC PARAMETERS OF PROCESSING COBALT-CONTCAINING ORES AND OF IVESTIGATION OF CONDITIONS OF SEPARATION COBALT FROM SOLUTION." Azerbaijan Chemical Journal, no. 3 (October 10, 2019): 88–93. http://dx.doi.org/10.32737/0005-2531-2019-3-88-93.

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30

Sokolov, E. G., A. V. Ozolin, E. E. Bobylev, and D. A. Golius. "Kinetics of mass transfer during the formation of diffusion cobalt coatings from liquid metal solutions." PHYSICS AND CHEMISTRY OF MATERIALS TREATMENT 5 (2024): 28–36. https://doi.org/10.30791/0015-3214-2024-5-28-36.

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The paper shows the possibility of forming diffusive cobalt and cobalt-tungsten coatings on Armco-iron from lead-based liquid metal solutions. In the temperature range 900 – 1050 °C, cobalt coatings with a surface content of 15 – 23 wt. % cobalt were obtained on iron. The introduction of a liquid metal solution of finely dispersed tungsten powder affects the mass transfer of cobalt and makes it possible to obtain cobalt-tungsten diffusion coatings on iron with a surface content of up to 11 wt. % cobalt and up to 24 wt. % tungsten.

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31

Al-Aqeeli, Nasser, and Ihsan-ul-Haq Toor. "Comparison of Corrosion Behavior of Electrochemically Deposited Nano-Cobalt-Coated Ni Sheet." Journal of Chemistry 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/543676.

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Corrosion behavior of nano-coblat-coated Ni sheet was compared with pure Ni and 20% Fe-Ni alloy sheet using potentiodynamic polarization and linear polarization technique in 0.1 M NaCl solution at room temperature. Results showed that corrosion resistance properties of nano-Co-coated Ni sheet were almost same as that of pure Ni sheet, however corrosion resistance of 20% Fe-Ni sheet was decreased significantly. Pitting potential of 20% Fe-Ni sheet was subsequently decreased as compared to pure Ni sheet as well as nano-cobalt-coated Ni sheet. SEM/EDS analysis of the corroded surfaces showed that

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32

Tower, Stephen S., Bradford D. Gessner, Christina S. Cho, and Robert L. Bridges. "The association of cobalturia with cobaltism symptoms a prospective blinded study of 229 post-arthroplasty patients." PLOS ONE 18, no. 12 (2023): e0295203. http://dx.doi.org/10.1371/journal.pone.0295203.

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Introduction Cobalt is a mitochondrial toxin, clinical cobaltism manifests with constitutional, neurologic, and cardiovascular symptomatology. Cobalt’s severe toxidrome is known through case reports from extreme wear or corrosion of cobalt-chromium arthroplasty components. However, the spectrum and epidemiology of orthopedic-implant cobaltism and its relationship to duration and degree of cobalt exposure are not well defined. Methods The relationship of urine-cobalt concentration and duration of exposure to cobalt-chromium joint implants and cobaltism symptomatology were prospectively studied

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33

Riaz, Tauheeda, Soha Nayyar, Tayyaba Shahzadi, et al. "The Biogenic Synthesis of Cobalt Monometallic and Cobalt–Zinc Bimetallic Nanoparticles Using Cymbopogan citratus L. Leaf Extract and Assessment of Their Activities as Efficient Dye Removal and Antioxidant Agents." Agronomy 12, no. 10 (2022): 2505. http://dx.doi.org/10.3390/agronomy12102505.

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In this work, green synthesized cobalt monometallic and cobalt–zinc bimetallic NPs were prepared by bioreduction of metallic salts with Cymbopogan citratus plant extract. Biosynthesized cobalt nanoparticles (NPs) and cobalt–zinc bimetallic NPs were characterized using diverse techniques such as FTIR, UV-Visible spectroscopy, SEM, XRD, and EDX analyses. UV-visible spectra for green-synthesized cobalt monometallic and cobalt–zinc bimetallic NPs were in the range between 300 to 350 nm, which confirmed the formation of stable monometallic and bimetallic NPs. The average particle size of CoNPs calc

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34

Ali, N. W. "Green Synthesis of Cobalt Nanoparticles and their Application in Removal of Lead from Polluted Water." BASRA JOURNAL OF SCIENCE 39, no. 2 (2021): 292–305. http://dx.doi.org/10.29072/basjs.202129.

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Cobalt nanoparticles were synthesized by reduction-oxidation method. The reaction was done using cobalt salts as the source of metal and eucalyptus leaf as a reducing material and trisodium citrate used as capping agent. The creation of the cobalt nanoparticles was monitored using UV-Vis spectroscopy. The UV-Vis spectroscopy shown the formation of cobalt nanoparticles by exhibing the typical surface plasmon absorption maximum at 570 nm. Fourier transform infrared spectra (FTIR) used for characterization of eucalyptus leaf some functional groups that related with cobalt nanoparticles was showed

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35

LEE, J. E., Y. S. KIM, and T. W. KIM. "COMPARING SLIDING-WEAR CHARACTERISTICS OF THE ELECTRO-PRESSURE SINTERED AND WROUGHT COBALT." International Journal of Modern Physics B 22, no. 31n32 (2008): 6127–32. http://dx.doi.org/10.1142/s0217979208051686.

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Dry sliding wear tests of hot-pressure sintered and wrought cobalt were carried out to compare their wear characteristics. Cobalt powders with average size of 1.5µm were electro-pressure sintered to make sintered-cobalt disk wear specimens. A vacuum-induction melted cobalt ingot was hot-rolled at 800°C to a plate, from which wrought-cobalt disk specimens were machined. The specimens were heat treated at various temperatures to vary grain size and phase fraction. Wear tests of the cobalt specimens were carried out using a pin-on-disk wear tester against a glass (83% SiO 2) bead at 100N with the

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36

Diale, M., C. Challens, and E. C. Zingu. "Cobalt self‐diffusion during cobalt silicide growth." Applied Physics Letters 62, no. 9 (1993): 943–45. http://dx.doi.org/10.1063/1.108527.

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37

Chung, Hyun-Jong, Hun Huy Jung, Yong-Sung Cho, et al. "Cobalt–polypyrrole–cobalt nanowire field-effect transistors." Applied Physics Letters 86, no. 21 (2005): 213113. http://dx.doi.org/10.1063/1.1940125.

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38

Dzidziguri, Ella L., Elena N. Sidorova, Marzhan Inkar, et al. "Cobalt nanoparticles synthesis by cobalt nitrate reduction." Materials Research Express 6, no. 10 (2019): 105081. http://dx.doi.org/10.1088/2053-1591/ab3ca8.

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39

Rosenberg, D. W. "Pharmacokinetics of cobalt chloride and cobalt-protoporphyrin." Drug Metabolism and Disposition 21, no. 5 (1993): 846–49. https://doi.org/10.1016/s0090-9556(25)08172-3.

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40

Thomas, Nicholas C., Katrina Pringle, and Glen B. Deacon. "Cobalt(II) and cobalt(III) coordination compounds." Journal of Chemical Education 66, no. 6 (1989): 516. http://dx.doi.org/10.1021/ed066p516.

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41

Feizi, Hadi, Robabeh Bagheri, Zhenlun Song, Jian-Ren Shen, Suleyman I. Allakhverdiev, and Mohammad Mahdi Najafpour. "Cobalt/Cobalt Oxide Surface for Water Oxidation." ACS Sustainable Chemistry & Engineering 7, no. 6 (2019): 6093–105. http://dx.doi.org/10.1021/acssuschemeng.8b06269.

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42

Barge, T., S. Poize, J. Bernardini, and P. Gas. "Cobalt lattice diffusion in bulk cobalt disilicide." Applied Surface Science 53 (November 1991): 180–85. http://dx.doi.org/10.1016/0169-4332(91)90260-q.

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43

Hawco, Nicholas J., Daniel C. Ohnemus, Joseph A. Resing, Benjamin S. Twining, and Mak A. Saito. "A dissolved cobalt plume in the oxygen minimum zone of the eastern tropical South Pacific." Biogeosciences 13, no. 20 (2016): 5697–717. http://dx.doi.org/10.5194/bg-13-5697-2016.

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Abstract. Cobalt is a nutrient to phytoplankton, but knowledge about its biogeochemical cycling is limited, especially in the Pacific Ocean. Here, we report sections of dissolved cobalt and labile dissolved cobalt from the US GEOTRACES GP16 transect in the South Pacific. The cobalt distribution is closely tied to the extent and intensity of the oxygen minimum zone in the eastern South Pacific with highest concentrations measured at the oxycline near the Peru margin. Below 200 m, remineralization and circulation produce an inverse relationship between cobalt and dissolved oxygen that extends th

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44

ZAGAL, JOSÉ H., Miguel A. GULPPI, CHRISTELLE DEPRETZ, and DOMINIQUE LELIÈVRE. "Synthesis and electrocatalytic properties of octaalkoxycobalt phthalocyanine for the oxidation of 2-mercaptoethanol." Journal of Porphyrins and Phthalocyanines 03, no. 05 (1999): 355–63. http://dx.doi.org/10.1002/(sici)1099-1409(199906)3:5<355::aid-jpp144>3.0.co;2-u.

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We report on the synthesis of cobalt 2,3,9,10,16,17,23,24-octakis(2-ethylhexyloxy)phthalocyanine. This complex, when pre-adsorbed onto graphite electrodes, is active for the electro-oxidation of 2-mercaptoethanol. Its activity is higher than that of cobalt phthalocyanine and cobalt tetrasulfonated phthalocyanine adsorbed on graphite. The voltammetric response of adsorbed cobalt 3,4-octaethylhexyl- oxyphthalocyanine exhibits both Co ( II )/ Co ( I ) and Co ( III )/ Co ( II ) reversible processes. However, the Co ( III )/ Co ( II ) couple shows a pH dependence that is different from that reporte

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45

Brewer, K., G. A. Maylin, C. K. Fenger, and T. Tobin. "Cobalt use and regulation in horseracing: a review." Comparative Exercise Physiology 12, no. 1 (2016): 1–10. http://dx.doi.org/10.3920/cep140008.

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Cobalt, atomic weight 58.9, is a metallic element and environmental substance found in the animal in microgram quantities, predominantly as vitamin B12, but is also a component of at least one mammalian enzyme unassociated with B12. Cobalt is a required trace mineral and has long been administered as a dietary supplement to humans and animals. Cobalt deficiency outside of its requirement in vitamin B12 has not been reported in humans. The administration of cobalt salts was once standard treatment for anaemia in humans, owing to its ability to stimulate red blood cell synthesis. Elemental cobal

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46

Kiruba, M., N. Lakshminarasimhan, and C. Jeyabharathi. "Butynediol’s Role beyond Brightening Additive during Electrodeposition of Cobalt." Journal of The Electrochemical Society 169, no. 3 (2022): 032507. http://dx.doi.org/10.1149/1945-7111/ac5a1d.

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Butynediol (2-Butyne-1,4-diol), a well-known type-II brightening additive, changes the interfacial pH resulting in the formation of porous cobalt hydroxide film of ca. 1 μm thickness over the copper substrate in a short duration of electrodeposition (2 min) and at a very low current density (−5 mA cm−2) from sulfate bath. In the absence of butynediol, a metallic cobalt layer was observed under identical deposition conditions. The choice of anions (sulfates, chlorides and nitrates) in the electrodeposition bath determines the kind of electrodeposited films obtained, viz., cobalt, cobalt/cobalt

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47

Di Giulio, C., W. X. Huang, S. Lahiri, A. Mokashi, and D. G. Buerk. "Cobalt stimulates carotid body chemoreceptors." Journal of Applied Physiology 68, no. 5 (1990): 1844–49. http://dx.doi.org/10.1152/jappl.1990.68.5.1844.

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Because cobalt administration is known to elicit erythropoietin response, it is a reasonable hypothesis that cobalt would also stimulate the O2-sensing process in the peripheral chemoreceptors. We tested this hypothesis by measuring the effects of cobalt chloride on carotid chemosensory fibers in pentobarbital-anesthetized cats that were paralyzed and artificially ventilated. Responses of carotid chemoreceptor afferents to graded doses of cobalt given by intra-arterial injections (0.08-2.10 mumols) were measured at constant blood gases. Responses of the same chemoreceptor afferents to hypoxia,

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Wakila, Muhamad, Supardin Nompo, Nurlia Jafar, Alam Thamsi, Abdul Salam Munir, and Andi Heriansyah. "Analysis of Cobalt Distribution and Co-Ni Correlation in Nickel Laterite Zonation in Tropical Region." Iraqi Geological Journal 57, no. 2B (2024): 205–18. http://dx.doi.org/10.46717/igj.57.2b.14ms-2024-8-24.

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Abstract:

Cobalt is a key metallic element required in the manufacture of lithium-ion batteries in the electric car industry, which has led to increased demand for cobalt globally. Cobalt is found associated with laterite nickel deposits but generally at lower levels. This study aims to analyze the distribution of cobalt in the laterite zone, determine cobalt-rich zones, determine cobalt-forming minerals in the limonite, saprolite and bedrock zones. As well as determining the average cobalt content in each nickel laterite zone, and determining the correlation between Co and Ni in the laterite zone. The

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Lin, Shengnan, Xijuan Pan, Deliang Meng, and Tingan Zhang. "Electric conversion treatment of cobalt-containing wastewater." Water Science and Technology 83, no. 8 (2021): 1973–86. http://dx.doi.org/10.2166/wst.2021.101.

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Abstract Long-term accumulation of cobalt-containing wastewater may also pollute groundwater and cause a large amount of loss of valuable metals. Therefore, the comprehensive utilization of cobalt-containing wastewater must be realized, especially as cobalt itself is a very important strategic resource. This paper proposes a membrane electroconversion method to separate cobalt ions from cobalt-containing wastewater and prepare cobalt hydroxide. In addition, the electrolysis process was optimized, and single-factor experiments such as the initial concentration, cobalt ions, current density, tem

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Jia, Xiao Ming, and Fei Wang. "Influence of Antirusting Aggent on the Cobalt Leaching of the Cemented Carbide Tool." Key Engineering Materials 407-408 (February 2009): 317–20. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.317.

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The cutting fluid is widely used in cutting process with the cemented carbide tool. This paper studied the influence of some antirusting aggents, such as triethanolamine, tri-sodium phosphate, benzotriazole, sodium carbonate anhydrous, on the cobalt leaching of the cemented carbide tool by soaking test. The test results showed that a cobalt on cememted carbide surface and triethanolamine can produce complex compound into solution that made the cobalt leaching. The cobalt of the cemented carbide with the ion of the tri-Sodium phosphate in a water solution can form the loose deposition which lea

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