[Dynamics of blood lead level in exposed workers and its effects on fetal constitutional development]

Levels of blood lead (Pb-B) and zinc protoporphyrin (ZPP) in exposed women of a storage battery plant during their early gestation and delivery stage were determined and compared with those in control women. Pb-B in exposed women kept in a consistently high level of 0.98 mumol/L and ZPP of 1.35 mumol/L. Pb-B level in umbilical cord of their neonates reached 0.90 mumol/L and ZPP 1.11 mumol/L, both of which were significantly higher than those in control women (0.26 mumol/L and 0.34 mumol/L of Pb-B and 0.51 mumol/L and 0.78 mumol/L of ZPP in women's blood and umbilical cord blood, respectively). The significance of consistent increase in Pb-B and ZPP and their effects on fetal development were discussed in the paper.