[Levels of mineral elements composition and heavy metal pollution in human breast milk in Shenzhen City].
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.
Deng
Bo
B
Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, China. ddenbo2000@163.com
Zhang
Huimin
H
Yan
Chunrong
C
Zhang
Lishi
L
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
D004785:Environmental Pollutants; D019216:Metals, Heavy; D014131:Trace Elements; D002104:Cadmium; D007854:Lead; D001151:Arsenic