Serum dioxin levels in Vietnamese men more than 40 years after herbicide spraying
Recent
studies have found elevated dioxin levels inside some U.S. military former air
bases in Vietnam, known as hotspots.
Many
studies of Agent Orange have been done in U.S. veterans; however, there is
little known about Vietnamese men.
In
2010, we collected blood samples from 97 men in a hotspot and 85 men in an
unsprayed area in Northern Vietnam. Serum concentrations of not only TCDD but
also other dioxins (PCDDs), furans (PCDFs), and nonortho polychlorinated
biphenyls (PCBs) were significantly higher in the hotspot than in the unsprayed
area.
In
the hotspot, three subareas were demarcated, based on their proximity to the
air base. The total toxic equivalents (TEQ) of PCDDs/PCDFs+PCBs was 41.7 pg/g
lipid in the area closest to the air base, while it was around 29 pg/g lipid in
the other two subareas.
In
the unsprayed area, the dioxin levels were no different between men who went to
the South during the Vietnam War and those who remained in the North, with TEQs
PCDDs/PCDFs+PCBs of around 13.6 pg/g lipid.
Our
findings suggested that people living close to the former U.S. air bases might
have been exposed to both Agent Orange and other sources of dioxin-like
compounds
Title:
| Serum dioxin levels in Vietnamese men more than 40 years after herbicide spraying | |
| Authors: | Ho, Hung Manh Kido, Teruhiko Okamoto, Rie Sun, Xianliang Anh, Le Thai Supratman, Supratman ... |
| Keywords: | Airports Body fluids Herbicides Military bases Pollution detection Pollution detection |
| Issue Date: | 2014 |
| Publisher: | Environmental Science and Technology |
| Citation: | Scopus |
| Abstract: | Recent studies have found elevated dioxin levels inside some U.S. military former air bases in Vietnam, known as hotspots. Many studies of Agent Orange have been done in U.S. veterans; however, there is little known about Vietnamese men. In 2010, we collected blood samples from 97 men in a hotspot and 85 men in an unsprayed area in Northern Vietnam. Serum concentrations of not only TCDD but also other dioxins (PCDDs), furans (PCDFs), and nonortho polychlorinated biphenyls (PCBs) were significantly higher in the hotspot than in the unsprayed area. In the hotspot, three subareas were demarcated, based on their proximity to the air base. The total toxic equivalents (TEQ) of PCDDs/PCDFs+PCBs was 41.7 pg/g lipid in the area closest to the air base, while it was around 29 pg/g lipid in the other two subareas. In the unsprayed area, the dioxin levels were no different between men who went to the South during the Vietnam War and those who remained in the North, with TEQs PCDDs/PCDFs+PCBs of around 13.6 pg/g lipid. Our findings suggested that people living close to the former U.S. air bases might have been exposed to both Agent Orange and other sources of dioxin-like compounds |
| Description: | Environmental Science and Technology, Volume 48, Issue 6, 2014, Pages 3496-3503 Environmental Science and Technology |
| URI: | http://pubs.acs.org/doi/abs/10.1021/es404853h http://repository.vnu.edu.vn/handle/VNU_123/34118 |
| ISSN: | 0013936X |
| Appears in Collections: | Bài báo của ĐHQGHN trong Scopus |
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