摘要
本文比较了美国和中国的一些地区儿童血铅调查和研究成果,证明儿童血铅(BL)与土壤含铅量(SL)直接相关,土壤铅已经成为儿童铅暴露的主要来源。当土壤含铅量超过500–600 mg/kg时,长期暴露在这种土壤环境下的儿童血铅浓度超过10μg/dL是可以预期的。中美儿童血铅模型(IEUBK模型)的实际计算结果也表明,当表层土壤含铅量超过600 mg/kg时,其土地利用不适合任何儿童活动。为了更好地预防儿童高血铅,我国土壤修复的标准可定为居住用地Pb≤250 mg/kg,非居住用地Pb≤600 mg/kg。
The comparative study for childhood blood lead levels in some urban areas of USA and China have proved that blood lead( BL) in children is strongly associated with soil lead( SL). Soil lead has become a major source of child exposure. When children live in lead- exposed environment of Pb≥500 – 600 mg / kg in soil,high rate of children's BL≥10μg / dL is expected over time. Prediction of EUBK Model with USA and Chinese defaults also indicates that the land with Pb concentration higher than 600 mg / kg on the top soil is not suitable for any children activities. The residential cleanup criteria of Pb≤250 mg / kg and non- residential cleanup criteria of Pb≤600 mg / kg are acceptable for soil remediation in order to prevent high level of children's BL.
出处
《中国人口·资源与环境》
CSSCI
北大核心
2014年第S1期102-106,共5页
China Population,Resources and Environment
