口腔内鉛量の労働衛生学的意義

概要

論文の詳細を見る
Oral lead contents of lead workers in a storage battery and a lead refining plant were estimate, and were compared with blood lead contents, whole blood gravity and coproporphyrinuria. The oral lead was estimated in samples of the teeth calculus or coating and also in samples of 30 cc of 0.5% acetic acid solution by which the oral cavities of workers were washed out. The principal results obtained were as follow: 1. Lead contents of teeth calculus and coating were estimated from 3 to 120 μg per 100 mg. 2. Lead was scarecely recovered from saliva of the parotid gland. Lead contents of teeth calculus and coating showed no correlation with those of blood lead. From these facts, it seems most logical to assume that the oral lead of lead workers is of environmental orgin but not come from the lead absorbed in the body. Lead contents of the washed out solution from the oral cavities of the workers indicated a high correlation (r=-0.71) with whole blood gravity, which is one of the best indicators of the chronic lead intake. The lead contents of the washed out solution must be directly influenced by the lead concentration of environmental air.
社団法人日本産業衛生学会の論文