BIOLOGICAL MONITORING OF ARSENIC, LEAD AND CADMIUM IN OCCUPATIONALLY AND ENVIRONMENTALLY EXPOSED PREGNANT-WOMEN

Lead and cadmium in blood (B-Pb and B-Cd, respectively) and arsenic in urine (U-As) were analyzed three times during pregnancy for women liv ing around a metal smelter and women living in a reference town. The B -Pb levels were significantly higher in the smelter town. In the women of both towns, the B-Pb levels increased during pregnancy. Women who were employed at the smelter had higher B-Pb levels than women in the surrounding area. There were no significant differences in the B-Cd le vels between the smelter and reference towns, except for non- and ex-s mokers at the onset of pregnancy. No difference between the two areas was seen among the smokers, whose cadmium levels were twice those of n on- and ex-smokers. There were no significant differences in the U-As levels, which were comparable with previously reported values in Swede n.