Li Xiaowei, Liu Qing, Liu Liping, Wu Yongning
National Institute for Nutrition and Food Safety, China Center for Disease Control and Prevention, Beijing 100021, China.
Wei Sheng Yan Jiu. 2012 May;41(3):379-84.
To assess the distribution of dietary lead exposure in different age-gender groups of Chinese residents by using the data from China Total Diet Study, and combining the new risk assessment and the PTWI withdrawn by JECFA. Methods Combining the lead concentrations of dietary samples with the food consumption data from China Total Diet Study in 2007 to obtain the distribution of dietary intake and dietary source of lead in different age-gender population groups.
Dietary lead exposure of different age-gender population groups in China was in the range of 48.7 -116.7 microg/d. The status of higher lead exposure in younger age groups was not optimistic, as the mean and median margins of exposure (MOE) have been less than 1.0 (0.1 - 0.3). The main sources of dietary lead were cereals and vegetables, which covering 57% of total lead exposure.
Lowering the dietary lead exposure of Chinese residents is necessary, especially of infants and children.
利用中国总膳食研究的数据，结合新的风险评估和食品添加剂联合专家委员会撤销的暂定每周耐受摄入量（PTWI），评估中国居民不同年龄性别组膳食铅暴露情况。方法 将膳食样本中的铅浓度与2007年中国总膳食研究中的食物消费数据相结合，以获得不同年龄性别群体膳食铅摄入量及膳食来源的分布情况。
中国不同年龄性别群体的膳食铅暴露量在48.7 - 116.7微克/天范围内。较年轻年龄组铅暴露较高的状况不容乐观，因为暴露边际均值和中位数已小于1.0（0.1 - 0.3）。膳食铅的主要来源是谷类和蔬菜，占总铅暴露量的57%。
降低中国居民的膳食铅暴露很有必要，尤其是婴幼儿和儿童。
