title: [Levels of mineral elements composition and heavy metal pollution in human breast milk in Shenzhen City].
abstract: OBJECTIVE
  To investigate the levels of some mineral elements composition and heavy metal in human breast milk in Shenzhen, and estimate the status of infant with breast feeding.
  
  
  METHODS
  ICP-MS and ICP-AES instruments were used to detect the levels of four macroelements of Ca, K, Na, Mg and four microelements of Zn, Fe, Se, Cu, totally eight minerals as well as three heavy metal of Pb, As and Cd in human breast milk. 60 breast milk samples were collected from the women aged 20-35, lived in Shenzhen over 5 years, postdelivery 3 weeks to 2 months from Jul. to Nov. 2007.
  
  
  RESULTS
  Average concentration for four kinds of macroelement of Ca, K, Na, Mg was 280.22, 498.61, 188.65 and 28.31 mg/L respectively, that for four kinds of microelements of Zn, Fe, Se, Cu was 2.29 mg/L, 358.88 microg/L, 8.28 microg/L and 339.16 microg/L respectively in 60 human breast milk samples. Average concentration of Pb was 2.13 microg/L in 60 human breest milk samples, and heavy metal As and Cd were non-detected.
  
  
  CONCLUSIONS
  The nutrition status of four kinds of macroelement of Ca, K, Na, Mg and three kinds of microelements of Zn, Fe, Cu in 60 human breast milk samples were reasonable, but the lack of microelement Se and the pollution of the heavy metal should been taken into account.
authors: Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, China. ddenbo2000@163.com
authors: Bo
authors: B
authors: Deng
authors: Huimin
authors: H
authors: Zhang
authors: Chunrong
authors: C
authors: Yan
authors: Lishi
authors: L
authors: Zhang
mesh_terms: D000328:Adult; D001151:Arsenic / Q000032:analysis; D002104:Cadmium / Q000032:analysis; D002681:China; D004785:Environmental Pollutants / Q000032:analysis*; D005260:Female; D006801:Humans; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D008895:Milk, Human / Q000737:chemistry*; D011247:Pregnancy; D014131:Trace Elements / Q000032:analysis*; D055815:Young Adult
chemical_list: D004785:Environmental Pollutants; D019216:Metals, Heavy; D014131:Trace Elements; D002104:Cadmium; D007854:Lead; D001151:Arsenic