Title :
Measurement of the magnetic properties of metal dusts and fumes
Author :
Moilanen, M. ; KalliomÄki, K. ; KalliomÄki, P.L. ; Aittoniemi, K.
Author_Institution :
University of Oulu, Oulu, Finland
fDate :
3/1/1982 12:00:00 AM
Abstract :
An instrument for measuring the specific remanent moment and the pulse coercive force of ferro/ferrimagnetic dust samples has been constructed using a commercial fluxgate magnetometer as a detector. The minimum amount of dust needed for successful measurements is about 1 mg to match the amount of dust collected when using standard air sampling methods. An output noise of 14 PTrms(smooth RC = 48 s) for the instrument has been achieved in a normal unshielded laboratory room. Examples of the magnetic properties of dust samples from different work environments are given for the calibration of the in vivo measurement of lung-retained magnetic contaminants.
Keywords :
Aerosols; Air pollution; Coercive forces; Ferrimagnetic materials/devices; Iron materials/devices; Magnetic materials/devices; Occupational health and safety; Remanence; Respiratory systems; Coercive force; Detectors; Ferrimagnetic materials; Force measurement; Instruments; Magnetic properties; Magnetometers; Measurement standards; Pollution measurement; Pulse measurements;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1982.1061822
