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为了研究铅的毒作用，对116名铅作业工人做了健康检查，测定了其31名4～6岁子女的智商，并测定了68名父母为非铅作业工人的儿童智商，以作对照。神经衰弱是工人最常见的症状，其次是消化系统症状。车间空气铅浓度与尿铅、尿δ-ALA、神经衰弱有相关关系。铅作业者子女的平均智商为84.82，显著低于对照组的98．30。铅作业子女中有32．2％的人智商≤85，而对照组仅11．8％；铅作业子女中有65％的人智商≥130，而对照组为27．9％，差异均有显著性。特别是父母双方均是铅作业工人子女智商为83.154，对照组则是103．615，具有显著性差异。多因素逐步回归分析发现，母亲的工种、父亲的工龄等是影响子女智商的重要因素之一。
To study the toxic effects of lead, health checks were performed on 116 lead workers, the IQ of 31 children aged 4 to 6 was measured, and the IQ of 68 children whose parents were non-lead workers was measured for comparison. Neurasthenia is the most common symptom of workers, followed by digestive symptoms. Air lead concentrations in the workshop were related to urinary lead, urinary δ-ALA, and neurasthenia. The average IQ of children of lead workers was 84.82, significantly lower than the control group of 98.30. 32.2% of lead working children had IQ ≤ 85 compared with 11.8% in control group; 65% of lead working children had IQ ≥ 130, compared with 27.9% in control group, with significant differences Sex. In particular, both parents were lead workers, children’s IQ was 83.154, while the control group was 103.615, with significant differences. Multi-factor regression analysis found that one of the important factors influencing children’s IQ is the type of mother’s work and the working age of the father.