Deveaux P, Kibel M A, Dempster W S, Pocock F, Formenti K
S Afr Med J. 1986 Mar 29;69(7):421-4.
Blood lead levels were assessed in 293 children aged between 4 and 6 years attending preschool centres in metropolitan Cape Town in order to establish the degree of lead absorption. Anthropometric data, blood count, zinc protoporphyrin and blood lead level were obtained for each child. A questionnaire was used to determine socio-economic status, dietary habits and history of pica. Thirteen children, or 4,4% of those sampled, had blood levels of greater than or equal to 30 micrograms/dl. The majority of these children lived in close proximity to one another in a socially deprived inner urban environment. Environmental sampling for lead was carried out in the homes of children with the highest blood levels as well as in the homes of a matched control group with low levels living in the same area. The only difference was a significantly higher incidence of pica in the children with high levels.
为确定铅吸收程度，对开普敦大都市地区293名4至6岁在学前中心就读的儿童进行了血铅水平评估。获取了每个儿童的人体测量数据、血细胞计数、锌原卟啉和血铅水平。使用一份问卷来确定社会经济地位、饮食习惯和异食癖病史。13名儿童，即抽样儿童的4.4%，血铅水平大于或等于30微克/分升。这些儿童大多数彼此居住在社会贫困的城市中心内环境中。对血铅水平最高的儿童家庭以及居住在同一地区的低水平匹配对照组家庭进行了铅环境采样。唯一的差异是血铅水平高的儿童中异食癖的发生率显著更高。
