CHẤT LƯỢNG NƯỚC KHU VỰC BIỂN VEN BỜ TỈNH NINH BÌNH

Cao Thi Thu Trang; Nguyen Van Thao; Pham Thịi Kha; Le Van Nam; Nguyen Van Bach; Nguyen Thi Thu Ha

doi:10.15625/1859-3097/19/3/12645

Author affiliations

Authors

Cao Thi Thu Trang Institute of Marine Environment and Resources, VAST, Vietnam
Nguyen Van Thao Institute of Marine Environment and Resources, VAST, Vietnam
Pham Thịi Kha Institute of Marine Environment and Resources, VAST, Vietnam
Le Van Nam Institute of Marine Environment and Resources, VAST, Vietnam
Nguyen Van Bach Institute of Marine Environment and Resources, VAST, Vietnam
Nguyen Thi Thu Ha Institute of Marine Environment and Resources, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/19/3/12645

Keywords:

Water quality, risk quotient, limitation value, eutrophication.

Abstract

This paper presents the results of investigation on water quality in Ninh Binh coastal area in 2015. The results show that the risk quotient of water quality of the area was 0.34, indicating the water was safe for aquatic life. However, for individual water quality parameter, the coastal water of Ninh Binh was contaminated by TSS, ammonium and arsenic; water faced the risk of deficiency of dissolved oxygen. The remaining water quality parameters (nitrite, phosphate, cyanide, oil and grease, coliform, Cu, Pb, Zn, Cd, Hg and organochlorinated pesticides) are safe for aquatic life. As spatial distribution, the concentration of pollutants in water is lower at depth > 15 m. In the rainy season, the water quality tends to decrease compared to the dry season.

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