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Document ID (ISN)56011
CIS number 91-949
ISBN(s) 91-7045-059-5
Year 1990
Convention or series no. Arbete och hälsa 1990:9
Author(s) Wennberg A., Cizinsky G., Hagman M., Iregren A., Johansson L., Struwe G.
Title Manganese exposure in Swedish steel smelters - A health hazard to the nervous system
Original title Manganexponering i svensk smältverksindustri - En hälsorisk för nervsystemet [in Swedish]
Bibliographic information Arbetsmiljöinstitutet, Förlagstjänst, 171 84 Solna, Sweden, 1990. 32p. Illus. 26 ref.
Abstract 30 men (age 20-64 years) who had been exposed to 0.19-0.45mg/m3 of manganese for 1-45 years at manganese steel smelters and 60 controls (age 22-65 years) were examined. The investigation covered: a general health inquiry; brainstem and cerebral auditive evoked potential (AEP); EEG and diadochokinesometry; simple and complex reaction time, finger tapping, digit span, mental arithmetic, vocabulary, a coding task and manual dexterity; diagnostic interview scheme (DIS), dynamic rating scale for neurasthenic syndrome (DNS) and comprehensive psychopathological rating scale (CPRS). No group differences concerning health, EEG or the psychiatric examinations were found. Diadochokinesis was slower, cerebral AEP latency increased, reaction time and tapping digit span were impaired in the exposed group. These effects are interpreted as early signs of disturbances of the same type as parkinsonism.
Descriptors (primary) manganese; smelting plants; hazard evaluation; central nervous system
Descriptors (secondary) report; iron and steel industry; Parkinson's disease
Document type E - Books, reports, proceedings
Country / State or ProvinceSweden
Subject(s) Metal production and metalworking
Broad subject area(s) Chemical safety
Browse category(ies) Risk evaluation
Smelting and refining operations
Inorganic substances