title: [Lead intakes by different age-sex population groups from Chinese total diet study in 2000].
abstract: OBJECTIVE
  To estimate the dietary lead intakes by different age-sex population groups in China.
  
  
  METHODS
  The lead concentrations of food sample from 3rd Chinese total diet study were determined, and then were combined with the food consumption by population of ten age-sex groups, The lead intakes, and its distribution and dietary sources were obtained.
  
  
  RESULTS
  It was found that the mean and median concentrations of lead in all food samples were 0.118 and 0.052mg/kg, respectively. The highest concentration of individual sample and mean concentrations of lead in preserved egg were 8.964mg/kg and 2.577mg/kg, respectively. The vegetable samples in Hubei Province were heavily contaminated. The lead intakes by different age-sex groups were estimated to be 54.9-112.7microg/day. The average dietary lead intakes by 2-7 years old group could reach 86.1% of PTWI, and individual lead intakes by about 30% children in this group exceed PTWI. But the average dietary lead intakes of other age-sex population groups ranged from 42.8% to 86.1% of PTWI. The main sources of dietary lead were cereals and vegetables in ten age-sex population groups, and could reach 72%-80% of total lead intakes.
  
  
  CONCLUSIONS
  Although the dietary lead intakes by different age-sex population groups are all lower than PTWI, it should be decreased to a lower level. Moreover, the dietary exposures to lead are higher enough for 2-7 years old children and population in some provinces to be considered seriously.
authors.affiliation: Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Junquan
authors.initials: J
authors.lastname: Gao
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002681:China; D004032:Diet; D004034:Diet Surveys; D005260:Female; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D007854:Lead / Q000008:administration & dosage* / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D007854:Lead