Instrumentation for measuring the magnetic lung contamination of steel welders

K. Kalliomäki, P.-L. Kalliomäki, Väinö Kelhä, V. Vaaranen

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)


A technique, with the instrumentation required, is described that allows the routine mapping of magnetic lung contamination in vivo . The instrumentation consists of (1) a patient chair which moves during the mapping between two fluxgate transducers and two magnetizing coils producing a magnetic field to magnetize the lung contaminants and (2) a minicomputer for control, calculations and reporting. Measurements of lung contamination among mild steel and stainless steel welders are reported. The resolution in magnetic field measurement is 0.1 nT, corresponding to a sensitivity better than 1 mg of magnetic contaminants in the lungs in the form of magnetic iron oxides. The magnetic properties of welding fumes produced in mild steel and stainless steel welding processes are also reported.
Original languageEnglish
Pages (from-to)175-184
JournalAnnals of Occupational Hygiene
Issue number2
Publication statusPublished - 1980
MoE publication typeA1 Journal article-refereed


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