汽油无铅化造福儿童力量

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据《解放》报道，实行汽油无铅化两年，上海市比例从37.8％降至24.8％，整整下降了13个百分点。

铅是一种对神经系统有害的重金属元素。当儿童体内每升血液铅含量超过100微克，即为铅中毒。儿童血铅水平每上升100微克，便下降6至8分。

上海第二医科大学儿童铅中毒防治研究中心主任沈晓明教授，带领研究人员调查了上海市1972名学龄前儿童的血铅水平，并进行了为期两年的追踪研究。结果发现：上海儿童血铅水平在实行汽油无铅化前为每升83微克，一年后下降到每升80微克，两年后降至每升76微克。

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