空气中的铅在哈特福德儿童铅体内负荷增加中的作用。
Role of airborne lead in increased body burden of lead in Hartford children.
作者信息
Lepow M L, Bruckman L, Rubino R A, Markowtiz S, Gillette M, Kapish J
出版信息
Environ Health Perspect. 1974 May;7:99-102. doi: 10.1289/ehp.74799.
The ingestion of airborne lead fallout is the mechanism responsible for increased lead body burdens found in 10 urban Connecticut children. The mean indoor lead levels found in housedust was 11,000 mug/g; highest concentrations occurred on windowsills and in floor dust. The mean lead content of Hartford street dirt was 1,200 mug/g; levels were highest near the street and next to the buildings. The mean lead concentration of hand samples taken from the subject children was 2,400 mug/g; the mean weight of hand samples was 11 mg. The concentration of lead in dirt and househould dust was high enough to theoretically result in excessive lead accumulation in young children who are putting their dusty, dirty hands in their mouths during play. While we believe that lead emitted from automobiles contributes significantly to air, dirt and dust lead levels the environmental impact of reducing or eliminating lead from gasoline is not yet completely understood.
摄入空气中的铅沉降物是导致康涅狄格州10名城市儿童体内铅负荷增加的原因。房屋灰尘中的室内铅平均水平为11000微克/克；窗台和地板灰尘中的浓度最高。哈特福德街道灰尘的铅平均含量为1200微克/克；街道附近和建筑物旁的含量最高。从受试儿童采集的手部样本的铅平均浓度为2400微克/克；手部样本的平均重量为11毫克。灰尘和家庭灰尘中的铅浓度高到理论上足以导致幼儿在玩耍时将沾满灰尘和污垢的手放进嘴里从而造成铅过量积累。虽然我们认为汽车排放的铅对空气、灰尘和粉尘中的铅含量有很大影响，但减少或消除汽油中的铅对环境的影响尚未完全明了。
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