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  1. 139 大気海洋研究所
  2. 80 国際沿岸海洋研究センター
  3. Coastal Marine Science
  4. 30
  5. 1
  1. 0 資料タイプ別
  2. 30 紀要・部局刊行物
  3. Coastal Marine Science
  4. 30
  5. 1

Widespread contamination by persistent toxic substances in Vietnam and their implications on environmental quality and human health

https://doi.org/10.15083/00040803
https://doi.org/10.15083/00040803
6d5c11a6-e540-4620-93a7-c508ea395e5f
名前 / ファイル ライセンス アクション
KJ00004354634.pdf KJ00004354634.pdf (589.4 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2007-04-05
タイトル
タイトル Widespread contamination by persistent toxic substances in Vietnam and their implications on environmental quality and human health
言語
言語 eng
キーワード
主題Scheme Other
主題 pensistent・organochlorine
キーワード
主題Scheme Other
主題 environmental quality
キーワード
主題Scheme Other
主題 human health
キーワード
主題Scheme Other
主題 Vietnam
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.15083/00040803
ID登録タイプ JaLC
著者 Viet, Pham Hung

× Viet, Pham Hung

WEKO 139648

Viet, Pham Hung

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Lieu, Tran Thi

× Lieu, Tran Thi

WEKO 139649

Lieu, Tran Thi

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Minh, Nguyen Hung

× Minh, Nguyen Hung

WEKO 139650

Minh, Nguyen Hung

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Minh, Tu Binh

× Minh, Tu Binh

WEKO 139651

Minh, Tu Binh

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Tanabe, Shinsuke

× Tanabe, Shinsuke

WEKO 139652

Tanabe, Shinsuke

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著者所属
著者所属 Research Center for Environmental Technology and Sustainable Development (CETASD), Vietnam National University
著者所属
著者所属 Center for Marine Environmental Studies (CMES), Ehime University
抄録
内容記述タイプ Abstract
内容記述 Vietnam is a developing country located in the central part of the Southeast Asian tropical region. The country comprises the Red River and Mekong River Delta, inhabiting more than 30 million people, which is one of the most populous areas in the world. These deltas have become one of the most productive agricultural regions in Southeast Asia. Agrochemicals have been used extensively in the past and until very recently for agricultural purposes and malaria eradication program. The present paper provides a comprehensive overview of the environmental distribution, patterns and trends of contamination of toxic substances including persistent organochlorines (OCs) and endocrine active compounds (EACs) in different environmental compartments from Vietnam. Monitoring data reported during the 1990s demonstrated widespread and elevated contamination of DDTs in air, water, sediments and soils from in Vietnam. Recent studies in frame of the Asia-Pacific Mussel Watch Program have also revealed that fish, mussels and resident birds from Vietnam contained higher concentrations of DDTs as compared to other countries in region, suggesting the role of Vietnamese environment as a significant emission source of DDT in the Southeast Asian region. Subsequent surveys on coastal lines from north and middle part of Vietnam likewise demonstrated that contamination of some endocrine active compounds such as alkylphenols and phthalates are ubiquitous. In particular, relatively high concentrations of bis-phenol A were found in some locations in Red River delta, comparable or higher than those reported for several locations in developed nations in Western Europe and North America. A case study on seasonal variation of alkylphenols and phthalates in surface water of river delta and estuary of north and central Vietnam indicated the differences in distribution of these compounds between dry and rainy seasons. Higher concentrations of alkylphenols and phthalates were found in dry season in estuary; while the contrasting pattern was observed in the river delta, showing elevated residues in rainy season. This result suggests the different behavior of alkylphenols and phthalates in river delta and in coastal environment. The temperature dependence in tropical ecosystem and the influence of the specific local sources may be reasons for the observed results in the seasonal variations. To our knowledge, this is the first extensive study on the widespread contamination of EACs in Vietnam. Regarding the trends of contamination by OCs, preliminary survey conducted in Read River delta water and sediments indicated a rapid decline trend in water and a slow decrease in sediments during 1995-2001. From ecotoxicological and human health perspectives, concentrations of bis-phenol A and di (2-ethylhexyl) phthalates in surface water from some locations in Vietnam exceeded the guideline values for Ecotoxicological Effects and the Environmental Risk Limit, respectively, suggesting potential for toxic implications on aquatic wildlife. Human exposure to persistent organic pollutants indicated that DDT residues levels in human breast milk from both Hanoi and Hochiminh city were among the highest values reported for Asian developing countries as well as developed nations. Daily intakes estimating based on the exposure through sea-foods indicates that intakes of DDTs by Vietnamese populations were among the highest rank in Asia-Pacific countries, suggesting potential risk for human exposure to elevated DDT pollution. Future studies should be focused on the time trends of POPs and EACs in biota of Vietnam with view of predicting the future trend of contamination and to reveal new clues for understanding possible toxic impacts on aquatic organisms.
書誌情報 Coastal marine science

巻 30, 号 1, p. 396-400, 発行日 2006-04-28
ISSN
収録物識別子タイプ ISSN
収録物識別子 13493000
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA11957899
フォーマット
内容記述タイプ Other
内容記述 application/pdf
日本十進分類法
主題Scheme NDC
主題 452
出版者
出版者 International Coastal Research Center, Ocean Research Institute, the University of Tokyo
出版者別名
東京大学海洋研究所国際沿岸海洋研究センター
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