Global Application Laboratory, PerkinElmer Analytical Sciences, Shelton, CT 06484, USA.
Environ Sci Pollut Res Int. 2012 Sep;19(8):3268-75. doi: 10.1007/s11356-012-0837-9. Epub 2012 Feb 29.
The objective of this study is to determine children's blood lead levels and identify sources of lead exposure. Childhood lead exposure constitutes a major pediatric health problem today in China. A blood lead screening survey program for children in the age group of 2-12 years residing in Pearl River Delta region, south of China, was carried out from Dec 2007 to Jan 2008.
Blood lead levels and lead isotope ratios of a total of 761 participants were assessed by inductively coupled plasma mass spectroscopy. Measurements of urban environmental samples for source identification of children lead exposure were also performed.
The geometric mean value of the children's blood lead levels was 57.05 μg/L, and 9.6% of them were higher than 100 μg/L. The blood lead levels were still much higher than those in developed countries. Based on the data of environmental lead source inventories, lead isotopic tracing revealed that there is about 6.7% past used gasoline Pb embedded in Shenzhen residential dust and about 15.6% in Guangzhou dust, respectively.
本研究旨在检测儿童血铅水平并识别铅暴露的来源。在中国，儿童铅暴露是当前一个主要的儿科健康问题。2007 年 12 月至 2008 年 1 月，我们对居住在中国南方珠江三角洲地区的 2-12 岁儿童进行了血铅筛查调查。
我们采用电感耦合等离子体质谱法对 761 名研究对象的血铅水平和铅同位素比值进行了检测，并对城市环境样本进行了测量，以确定儿童铅暴露的来源。
儿童血铅水平的几何均数为 57.05μg/L，其中 9.6%的儿童血铅水平高于 100μg/L。与发达国家相比，中国儿童血铅水平仍然偏高。基于环境铅源清单数据，铅同位素示踪表明，深圳居民尘中过去使用的含铅汽油约占 6.7%，广州尘中约占 15.6%。
