<Original Paper>Changes over Time in Lead Concentration in a Factory's Air and in the Blood of the Workers

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概要

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• In order to know the trend of the results on ambient monitoring and biological monitoring in the three shops A, B and C, using lead for manufacturing leaded glass, regression analyses between lapsed months and the concentration of lead in the air (PbA) and the concentrations of lead in the blood (PbB) of workers handling lead were investigated. The results indicated that decreases in the concentration of PbB paralleled decreases in the concentration of PbA. This was confirmed by the negative values of the slopes in the regression equation between the elapsed time and the lead concentration in the air and between the elapsed time and the lead concentration in the blood. The negative slopes of regression lines between the elapsed time and of the concentrations of PbA or PbB are significant against the zero values which were found in the A, B and c shops. In Shop "A" the decreased concentration of PbA and PbB in the early stage is higher than those in the later stage.

• 川崎医療福祉大学の論文

著者

• Fujiki Yukio

  Matsushita Science Center Of Industrial Hygiene

• MICHITSUJI Hiromi

  Matsushita Science Center of Industrial Hygiene

• OGATA Masana

  Kawasaki University of Medical Welfare

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• Large Scale Biological Monitoring in Japan

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