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Document ID (ISN)52972
CIS number 89-1938
ISSN - Serial title 0007-1072 - British Journal of Industrial Medicine
Year 1989
Convention or series no.
Author(s) Piikivi L., Tolonen U.
Title EEG findings in chlor-alkali workers subjected to low long term exposure to mercury vapour
Bibliographic information June 1989, Vol.46, No.6, p.370-375. 19 ref. Illus.
Abstract The cerebral effect of long term (mean 15.6, SD 8.9 years) and low (about 25µg/m3 air) exposure to mercury vapour was studied in a group of 41 workers in a chlor-alkali plant and in a group of matched controls by electroencephalography (EEG). In the visually interpreted EEGs only a tendency for an increased number of EEG abnormalities, especially focal ones, could be seen in the exposed subjects. In the computerised EEG (cEEG), however, the exposed workers had significantly slower and more attenuated EEGs than the controls. This difference was most prominent in the occipital region, became milder parietally, and was almost absent frontally. Our results suggest that cEEG may show early effects on the brain of exposure to mercury vapour.
Descriptors (primary) chlorine; mercury; electrolysis; electroencephalographic changes; long-term exposure; bases, alkalis
Descriptors (secondary) encephalopathy; comparative study; computer analysis; electroencephalography
Document type D - Periodical articles
Subject(s) Occupational pathology
Broad subject area(s) Chemical safety
Browse category(ies) Mental health
Inorganic substances
Halogens and their inorganic compounds
Alkaline materials
Mercury and compounds