父母接触汞蒸气对子代智力发育影响的研究

THE EFEFCTS OF MERCURY VAPOR EXPOSURE OF PARENTS ON INTELLIGENTIAL DEVELOPMENT OF OFFSPRINGS

用美国丹佛智力筛查法(DDST),调查父母接触汞蒸气的子女(6岁以下)156人,对照组48人。父母作业环境汞蒸气浓度:平均0.0185mg/m^3(范围O.001～0.060mg/m^3)。在动作能、应物能、言语能和应人能四个检测项目中,父母接汞组儿童智力发育水平低于对照组,其中应物能最敏感。尿汞高于0.01mg/L的儿童智力发育迟长率比尿汞低于0.01mg/L的儿童高,说明儿童体内汞负荷与智力发育有关。调查结果表明:父母从事汞作业可对子代智力发育产生不良影响。

The 156 offsprings (below 6 years old) whose parents were exposed to mercury vapor (mercury group, MG) 79 male, 77 female, and 48 children as control group (CG) were investigated on intelligential development by DDST (Dever Developmental Screening Test) .The mercury vapor concentration of the working environment: Mean 0.0185 mg/m3, range 0.001-0.060 mg/m3. The results showed that intelligential development level of MG was lower than that of CG. The adverse effects of mercury exposure of mothers on intelligential development of offsprings were more serious than the effects of fathers. Among the four items of motor behavior, adaptive behavior, language behavior and personal social behavior, the adaptive behavior was most sensitive. The intelligential development level of children whose urine mercury (UM) was higher than 0.01 mg/L was lower than the children whose UM was lower than 0.01mg/L. The study showed that the mercury was harmful to intelligential development of their children when the parents were exposed to mercury vapor.