ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)37427
CIS number 82-690
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1981
Convention or series no.
Author(s) Hawkinson T.E., Barber D.E.
Title The industrial hygiene significance of small air ions
Bibliographic information Oct. 1981, Vol.42, No.10, p.759-762. Illus. 16 ref.
Abstract An ion mobility discriminator and analyser was used to survey small air ion levels at an electronic assembly production facility in response to symptoms of unknown origin which were common both to psychogenic and ion imbalance illnesses. The positive to negative charge ratio was 1.35 in outside air, 1.21 in office areas and 1.06 in problem production areas. The ion concentration was increased by 10-40% above outside levels in areas where electrostatic precipitators or ion sources were present. Reductions in ion levels were found in areas with relative humidity ≤5%. Ion concentrations were also lower in a laminar flow room, which had high-efficiency particulate filters, and the charge ratio changed to 0.55. No clear-cut association between ion concentration or charge ratio and illness was found.
Descriptors (primary) static electricity; atmospheric ionization
Descriptors (secondary) electronics industry; exposure evaluation
Document type D - Periodical articles
Subject(s) Radiation
Broad subject area(s)
Browse category(ies) Electronics industry
Electricity