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测定了160名来自铅作业工厂厂区内幼托儿童血铅水平,均值为227μg/L,血铅≥250μg/L 者占32%。30月龄以下小儿血铅水平与 Bayley 婴儿发育量表中 MDI 和 PDI 无关;可能与铅接触时间短有关;46月龄以上儿童血铅与总 IQ,操作 IQ 和语言 IQ 呈负相关,高铅组儿童各智商均显著低于低铅组,高铅对智能的影响是全面性的。
A total of 160 blood lead levels were measured in kindergartens from a lead-based factory with a mean of 227 μg / L and a blood lead level of ≥250 μg / L, accounting for 32%. Blood lead levels in children under 30 months of age had no correlation with MDI and PDI in the Bayley Infant Developmental Scale; may be related to the short lead exposure time; blood lead levels in children over 46 months of age were negatively correlated with total IQ, IQ and language IQ, The IQs of children in the group were significantly lower than those in the low lead group, and the impact of high lead on intelligence was comprehensive.