| Summary: | 碩士 === 輔仁大學 === 公共衛生學系碩士班 === 94 === The transpired mercury during the manufacturing process of fluorescent lamp would increase the mercury vapor pressure in the working place and lead to accumulation of inorganic mercury inside the workers. The Council of Labor Affairs conducted several investigations of occupational exposure to mercury for this particular industry in 1990, 1995, and 2000, respectively. Accordant advices and modifications were provided. This study was conducted to evaluate the current mercury exposure of fluorescent lamp workers.
This study investigated the mercury exposure of workers in two conventional fluorescent lamp and one cold cathode fluorescent lamp manufactures in Taiwan. Mercury vapor was collected from workplaces by Hydrar sorbent tubes, while urine samples of exposed workers were also collected for biological monitoring purpose. All samples were analyzed by cold mercury vapor atomic absorption spectrometer. The results were utilized to evaluate the current mercury exposure in the fluorescent lamp industry and to compare with the historical investigation data.
The results suggested that in fluorescent lamp factories, the mercury vapor concentrations in workplaces were lower than the regulation standard (0.05 mg/m3). And the values showed a trend of decline while comparing with the historical data. As for the biological monitoring of workers’ urine samples; the majority was lower than the BEI recommended by ACGIH (35 μg/g Crn). The data suggested that accumulation of inorganic mercury correlated with prolonged exposure (working years in this industry). While in the cold cathode fluorescent lamp factory, both the vapor concentrations in workplaces and the inorganic mercury in urines of the exposed workers were lower than the regulation standard.
Key words: mercury vapor, urine, speciation, cold mercury vapor atomic absorption spectrum analyzer
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