PMID: 7939588Jun 30, 1994Paper

Exposure to cobalt in the welding process with stellite

The Science of the Total Environment
F FerriO Sala

Abstract

In some small factories producing moulds for ceramic tiles using a cobalt alloy (stellite), environmental and biological (CoU) monitoring was conducted for eight workers employed in gas-shielded arc (MAG) and oxy-acetylene welding processes. During oxy-acetylene braze-welding, the exposure to cobalt is very low as are urinary cobalt concentrations. On the other hand, during the MAG welding process, the exposure levels can exceed the TLV-TWA levels and correlated well with CoU at the end of a working shift. Two MAG welders followed for two consecutive weeks, showed different patterns of urinary cobalt excretion: under the same environmental conditions, the higher CoU was found in the worker with greater past exposure. This aspect needs further evaluation before adopting CoU as a current indicator of occupational exposure to the metal.

References

Jan 1, 1985·International Archives of Occupational and Environmental Health·Y IchikawaS Goto
Jan 1, 1985·International Archives of Occupational and Environmental Health·G ScansettiF Fantoni

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Citations

Jun 1, 2006·International Archives of Occupational and Environmental Health·Fumiko OhashiMasayuki Ikeda
Jun 30, 1994·The Science of the Total Environment·E SabbioniP Seghizzi
Jun 26, 1999·Journal of Toxicology. Clinical Toxicology·D G Barceloux
Jan 13, 2017·International Archives of Occupational and Environmental Health·Andrea PrincivalleLuigi Perbellini

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