统计分析在血铅检测中的应用

该文针对河海大学幼儿园接受血铅调测的337名幼儿,以对家长问卷调查的方式,运用方差分析、假设检验及区间估计的方法对这些幼儿的血铅超标情况进行了统计分析.结果表明,虽然各年级幼儿血铅浓度无显著差异,但是大、中班幼儿(4～6岁)由于受环境铅污染机会多于小班幼儿和托班幼儿,故血铅超标率稍高;幼儿经常挑食、外出方式以助力车或摩托车为主、家长经常吸烟、家长职业性接触铅及其化合物等是血铅浓度超标的主要因素.

Statistical Analysis on Investigation of Childhood Blood Lead Standard Exceeding

337 children from kindergarten of Hohai University aged 2 to 6 years were received blood lead (BPb) standard exceeding test. Through the way of filling by children's patriarch, hypothesis testing, interval estimation and variance analysis were used for our statistical analysis. The results showed that the children from the top class and the middle class in the kindergarten had higher blood lead level than the children from both the bottom class and the nursery class had because the former had much more chance to contact environmental lead contamination than the latter had, although there was not much remarkable difference about blood lead standard exceeding among children from various class. Children who had partiality for a particular kind of food, traveled mainly by motorcycles, and contacted paint apparatus most often exceeded blood lead standard remarkably, Children also exceeded blood lead standard remarkably if their patriarch were smoking daily, or their family members contacted the matter which contains much lead, or their living environments were heavy lead contaminated frequently.