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微量铅对精神、神经系统的影响,已引起了广泛的重视。铅作业工人语言性及动作性智能与对照组相比较:Grandjean氏等报告,血铅平均浓度为46μg/dl(13～88)时语言性智能:一般知识、一般理解、计算、相似性理解、词汇量等明显降低,而数列默念无改变;动作性智能:数字-符号反应、积木、绘图排列等明显降低,而完成绘图及组合能力无改变。其中一般理解、计算、相似性理解、数列默念、数
Trace lead on the spirit of the nervous system has attracted widespread attention. Lead workers’ verbal and behavioral intelligence compared with the control group: Grandjean et al reported that blood lead levels averaged 46 μg / dl (13 to 88). Language Intelligence: General Knowledge, General Understanding, Computation, Similarity Understanding, Vocabulary and so significantly lower, while the number of silent meditation did not change; action intelligence: digital - symbolic response, building blocks, drawing arrangement significantly reduced, while the ability to complete the drawing and the combination of no change. Among the general understanding, calculation, similarity understanding, the number of meditation, number