| Autor: |
Manh, Ho Dung1,2, Kido, Teruhiko3 kido@mhs.mp.kanazawa-u.ac.jp, Tai, Pham The4, Okamoto, Rie3, Honma, Seijiro3, Liang, Sun Xian1, Anh, Le Thai1, Maruzeni, Shoko5, Nghi, Tran Ngoc5, Nishijo, Muneko5, Nakagawa, Hideaki5, Nhu, Dang Duc6, Van Tung, Dao7, Hung, Nguyen Ngoc7, Son, Le Ke8 |
| Předmět: |
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| Zdroj: |
Science of the Total Environment. Apr2015, Vol. 511, p416-422. 7p. |
| Abstrakt: |
We determined polychlorinated dibenzodioxin (PCDD) and polychlorinated dibenzofuran (PCDF) levels in breast milk of 143 primiparae living around the three most dioxin-contaminated areas of Vietnam. The women sampled lived in the vicinity of former U.S. air bases at Bien Hoa (n = 51), Phu Cat (n = 23), and Da Nang (n = 69), which are known as dioxin hotspots. Breast milk samples from Bien Hoa City, where residents live very close to the air base, showed high levels of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), with 18% of the samples containing > 5 pg TCDD/g lipid. However, Phu Cat residents lived far from the air base and their samples showed lower TCDD levels, with none containing > 5 pg TCDD/g lipid. In Da Nang, TCDD levels in mothers from Thanh Khe (close to the air base, n = 43) were significantly higher than those in mothers from Son Tra (far from the air base, n = 26), but not other PCDD and PCDF (PCDD/F) congeners. Although TCDD levels in Bien Hoa were the highest among these hotspots, levels of other PCDD/F congeners as well as the geometric mean concentration of total PCDD/F level in Bien Hoa (9.3 pg toxic equivalents [TEQ]/g lipid) were significantly lower than the level observed in Phu Cat (14.1 pg TEQ/g lipid), Thanh Khe (14.3 pg TEQ/g lipid), and Son Tra (13.9 pg TEQ/g lipid). Our findings indicated that residents living close to former U.S. air bases were exposed to elevated levels of TCDD, but not of other PCDD/F congeners. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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Full Text from ScienceDirect