Adverse reproductive effects in women have also been observed. Finally, fetal exposure can result in reduced birth weight, infant mortality, and fetal deaths. The influence of other local characteristics, such as building height, distance from intensive road traffic, and the existence of stationary lead sources should also be considered. Data on the concentration of lead in ambient air, and on the blood lead levels as an indicator of the health impact from lead air pollution are presented in Tables 2 and 3, respectively. The tables provide comprehensive data for different groups of people.
Italicized text denotes short term max.
The apparent increase in these cities may be caused by stationary sources. In Bulgaria, the average decrease between 1990 and 1995 has been about 30 percent, while in Slovakia it has ranged between 50 percent and 88 percent. In the Czech Republic, a trend in the decline of the ambient air lead concentrations during the period 1993-1995 has been reported in three of the surveyed industrial centers with heavy traffic, namely in Prague, Pribram and Usti n. Labem. Table 3 reports on the results of investigations of blood lead levels, chiefly in children but also for adults. Trends in BLL Based on the data in Table 3, no firm conclusions can be drawn concerning the BLL trends during a certain period of time for a given area.