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Biological Monitoring of Indium by Means of Graphite Furnace Atomic Absorption Spectrophotometry in Workers Exposed to Particles of Indium Compounds

Since the rapid expansion of III-V semiconductor and liquid crystal display production, the consumption of indium (In) has been increasing. From the mid-1990s, animal experiments have shown that the inhalation or intratracheal instillation of In compounds causes severe lung inflammation and mild adverse reproductive effects. Although the health effects of In on workers’ respiratory and reproductive systems have been unclear to date, assessing the exposure-effect relationships in Inexposed workers is a serious concern, but no information is available on the exposure-effect relationships in workers. This study attempted to estimate the In concentration in biological specimens of In-exposed workers, and to clarify the relationships among them.