References
- Tong Cuc Thong Ke (General Statistics Office), 2008, http://www.gso. gov.vn/ (in Vietnamese) (accessed 22 September 2008).
- T. Ishigaki and L.V. Chieu, Current situation on the technology of
wastewater treatment in Hanoi, Vietnam, J. Water Waste, 45
(2003) 975–979 (in Japanese).
- Vietnam Environment Protection Agency, Environment Report of
Vietnam, The current state of water environment in 3 river basins
of Cau, Nhue–Day and Dong Nai River System, 2006, http://www.nea.gov.vn/PDF_Soe2006_VN/HTMT_Tongquan06.htm
(accessed 24 September 2008).
- M. He, Z. Wang and H. Tang, The chemical, toxicological and
ecological studies in assessing the heavy metal pollution in Le An
River, China, Water Res., 32 (1998) 510–518.
- Water Environment Partnership in Asia, Nhue–To Lich river
basin, 2008, http://www.wepa-db.net/policies/cases/vietnam.htm (accessed 24 September 2008).
- Japan International Cooperation Agency, The study on environmental
improvement for Hanoi City in the Socialist Republic of
Vietnam, Technology Transfer Report, Tokyo, 2000.
- T.L.H. Nguyen, M. Ohtsubo, L.Y. Li and T. Higashi, Heavy metal
pollution of the To-Lich and Kim-Nguu River in Hanoi City and
the industrial source of the pollutants, J. Fac. Agr., Kyushu Univ.,
52 (2007) 141–146.
- T.L.T. Ho and K. Egashira, Heavy metal characterization of river
sediment in Hanoi, Vietnam, Commun. Soil Sci. Plant Anal., 31
(2000) 2901–2916.
- S. Hayakari, Excel Add-in Factory “Hayakari” (for offers of free
soft wares for statistics and climate analysis), 2006, http://www.jomon.ne.jp/~hayakari/index.html (in Japanese) (accessed 25
September 2008).
- H.J.M. Bowen, Environmental Chemistry of the Elements,
Academic Press, London, 1979.
- T.L.T. Ho and K. Egashira, Heavy metal status of agricultural soils
in Tuliem and Thanhtri Districts of Hanoi City, Vietnam, J. Fac.
Agr., Kyushu Univ., 43 (1999) 489–497.
- U. Förstner and G.T.W. Wittmann, Metal Pollution in the Aquatic
Environment, 2nd rev. ed., Springer-Verlag, Berlin, 1981.