Acquisition and retention of lead by young children
Acquisition and retention of lead by young children
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DOI：
10.1006/enrs.1999.4003
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发表时间：
2000-01-01
影响因子：
8.3
通讯作者：
Kuehnemann, TJ
中科院分区：
文献类型：
--
作者：
Manton, WI;Angle, CR;Kuehnemann, TJ
对生活在内布拉斯加州奥马哈市的儿童的血液和尿液中、手上以及一式两份饮食样本中的铅浓度和同位素比率进行了测量。一组包括22名从出生到1 - 2岁的儿童，另一组是20名2- 4岁的儿童，随访1年，尽管每组中有些人随访3 - 4年，在生命的任何时候都不是通过同位素比值确定的血液中膳食铅的成分，血铅似乎主要来自手，而这似乎又源自地板。对于一些家庭来说，地板上的铅似乎是来自窗台和外部的铅的混合物。只有两个孩子似乎直接从窗台上摄入了铅。一些住在正在改造的房屋中的人在2岁之前暴露于铅。对于那些在专业重塑期间短暂暴露的人来说，血铅的半衰期为10个月，但对于那些在父母重塑期间长期暴露的人来说，表观半衰期更长，在20到38个月之间。(C)北京大学出版社.
The concentrations and isotope ratios of lead in blood and urine, on the hands, and in duplicate diet samples were measured for children living in Omaha, Nebraska. One group consisted of 22 children followed from birth to between 1 and 2 years of age and another group was 20 2- to 4-year-old children followed for 1 year, although some in each group were followed for periods between 3 and 4 years, At no time in Life was a component of dietary lead identified in blood by isotope ratios, and blood lead appears dominated by lead derived from the hands, which in turn appears derived from the floors. For some homes floor lead appeared to be a mixture of lead from window sills and from the exterior. Only 2 of the children appear to have ingested lead directly from window sills. Several who lived in homes being remodeled were exposed to lead before the age of 2 years. For those who had been briefly exposed during professional remodeling the blood lead fell with a half-Life of 10 months but for those who had suffered prolonged exposure during remodeling by parents the apparent half-life was longer, between 20 and 38 months. (C) 2000 Academic Press.