Residue levels of hexachlorocyclohexane and dichlorodiphenyltrichloroethane in human milk collected from Beijing.
Forty-eight human breast milk samples were collected from mothers in Beijing. The hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT) (including α-HCH, β-HCH, γ-HCH, δ-HCH, p,p'-DDE, p,p'-DDD, o,p'-DDT, and p,p'-DDT) contents of the samples were determined by gas chromatography/electron capture detection and gas chromatography/mass spectrometry. α-HCH, β-HCH, γ-HCH, p,p'-DDE, p,p'-DDD, and p,p'-DDT were detected at rates of 20, 100, 10, 100, 10, and 22 %, respectively. The average residue levels in the samples were 174.6 ng/g fat for β-HCH, 333.8 ng/g fat for p,p'-DDE, 6.57 ng/g fat for α-HCH, 7.67 ng/g fat for γ-HCH, 4.18 ng/g fat for p,p'-DDD, and 11.4 ng/g fat for p,p'-DDT. The results showed that the infants' daily intake levels of HCH and DDT were 0.95 and 1.76 μg/kg body weight/day, respectively. Our result suggested that the total residue level of these organochlorine pesticides in breast milk from Beijing decreased and was lower than that from other coastal and heavy industrial cities in China. On the other hand, the levels of HCH and DDT were higher than those from some developed countries, but lower than those from other developing countries such as India.
National Research Center for Geoanalysis, 26 Bai Wan Zhuang Avenue, Xicheng District, Beijing 100037, People's Republic of China. songshuling163@163.com
Shuling
S
Song
Xiaodong
X
Ma
Ling
L
Tong
Qin
Q
Tian
Yi
Y
Huang
Shaoquan
S
Yin
Hongbin
H
Sun
D000328:Adult; D002681:China; D003634:DDT / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis*; D004787:Environmental Pollution / Q000706:statistics & numerical data; D005260:Female; D001556:Hexachlorocyclohexane / Q000032:analysis*; D006801:Humans; D018811:Maternal Exposure / Q000706:statistics & numerical data*; D008895:Milk, Human / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*
D004785:Environmental Pollutants; D010573:Pesticide Residues; D001556:Hexachlorocyclohexane; D003634:DDT