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

Volume

18

Issue

2

fYear

1982

fDate

3/1/1982 12:00:00 AM

Firstpage

788

Lastpage

791

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1982.1061822

Filename

1061822