[An epidemiological survey on saturnism among children due to lead pollution released from township enterprise].

Objective: To understand the current situations of saturnism and blood lead levels of children resided in village and circumjacent areas, and to know its relations with sex, age and other factors on children' s health as to providing some evidences for prevention and control.

Methods: An epidemiological survey was conducted for finding out the pollution sources and for a better understanding of the surrounding environment. All 221 children under 14 years old, from the lead pollution villages and surrounding establishments were enrolled, and their blood lead levels were detected by graphite atomizer absorption spectrophotometer method.

[Detection of the frequencies of numerical and structural chromosome aberrations in sperm of benzene series-exposed workers by multi-color fluorescence in situ hybridization].

To study the frequencies of numerical and structural aberrations for chromosome in sperm of benzene exposed workers, the multi-color FISH was used. Four DNA probes(one for chromosome 1 centromere and one for 1 p terminal, and two for chromosome 18 centromere) were hybridized with interphase sperms, and the frequencies of numerical aberrations for chromosome 1, 18 and structural aberrations of chromosome 1 were detected simultaneously. The time weighted average concentration (TWA) of benzene in workplace (42.