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Metals in the workplace
Published in Sue Reed, Dino Pisaniello, Geza Benke, Kerrie Burton, Principles of Occupational Health & Hygiene, 2020
Cobalt, being a relatively rare element, is also relatively rare in the workplace. The metal finds use in Al-Ni-Co permanent magnets, as a binder in hard-metal cutting tools, in some electrical alloys and in some dental metal alloys. Some cobalt salts, such as cobalt blue and cobaltous chloride, have been used in glass and ceramic enamels for colouring. Cobalt is an essential element in the formation of vitamin B12.
Metals in the workplace
Published in Sue Reed, Dino Pisaniello, Geza Benke, Principles of Occupational Health & Hygiene, 2020
Cobalt, being a relatively rare element, is also relatively rare in the workplace. The metal finds use in Al-Ni-Co permanent magnets, as a binder in hard-metal cutting tools, in some electrical alloys and in some dental metal alloys. Some cobalt salts, such as cobalt blue and cobaltous chloride, have been used in glass and ceramic enamels for colouring. Cobalt is an essential element in the formation of vitamin B12.
A review on bio-functional models of catechol oxidase probed by less explored first row transition metals
Published in Journal of Coordination Chemistry, 2022
Rashmi Rekha Tripathy, Shuvendu Singha, Sohini Sarkar
Before the nineteenth-century cobalt was used as pigment and coloring agent. Cobalt blue, cobalt green and cobalt violet, made with some common inorganic salts of cobalt or mixture of cobalt and other metals, have been used as the artist’s pigments since the middle ages. In modern age, cobalt-based super alloys have found applications in prosthetics and electrochemistry [93,94]. Being a part of vitamin B12 cobalt takes an essential part in metabolism of animals. Nitrile hydratase, prolidase, glucose isomerase, methylmalonyl-CoA carboxytransferase, aldehyde decarbonylase, lysine-2,3-aminomutase, bromoperoxidase and methionine aminopeptidase are examples of cobalt-containing enzymes that are present in various living systems. Recently, some of the cobalt(III) complexes have been found capable of antiviral and antimicrobial activities [95]. Apart from all biological and electrochemical applications, cobalt compounds are quite popular as oxidation catalysts. It can mimic catechol oxidase and act as effective bio-catalysts in catechol oxidation. Just like iron and manganese, varying oxidation states of cobalt (+2 and +3) can catalyze the oxidation with varying mechanisms. Metal centric path [7] and/or ligand centric radical path [41, 54, 68] may be followed during the catalytic cycle.