QUALITY OF SEDIMENTARY ENVIRONMENT IN NAI LAGOON, NINH THUAN PROVINCE

Authors

  • Lê Thị Vinh Viện Hải dương học-Viện Hàn lâm Khoa học và Công nghệ Việt Nam

DOI:

https://doi.org/10.15625/1859-3097/14/1/4030

Keywords:

Sedimentary environment, organic materials, heavy metals.

Abstract

The paper represents some aspects on the quality of the sedimentary environment in Nai lagoon. Results performed in May, 2011 shows that the contents of the organic materials and heavy metals in the sediment were considerably various ( Corg.: 0.08 - 1.44%,  Norg: 505.3 - 1279.0 μg/g,  Pt: 349.0 - 834.2 μg/g; Zn: 5.2 - 49.9 μg/g; Cd: 0.12 - 0.5 μg/g, Cu: 0.8 - 11.1 μg/g, Pb:13.7 - 21.1 μg/g, Fe: 3,066 - 15,999 μg/g, Cr: 3.5 - 23.4 μg/g and Mn: 57.9 - 352 μg/g). Overall, content of  Corg. and heavy metals decreased from the top toward the mouth of lagoon, while N and P were highest in the middle area and mouth of lagoon. The most part of the organic matters in the top of lagoon are terrigeneous in origin particularly, while those in mouth are mainly from human activities.

Generally, the sedimentary environment in Nai lagoon, in term of organic materials and heavy metals, was suitable for the aquatic life. However, from 1995 to now, there have been the increasing trend in organic matter (N and P) and heavy metal contents and the decreasing trend in  Corg.

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Published

2014-05-19

How to Cite

Vinh, L. T. (2014). QUALITY OF SEDIMENTARY ENVIRONMENT IN NAI LAGOON, NINH THUAN PROVINCE. Vietnam Journal of Marine Science and Technology, 14(1), 59–67. https://doi.org/10.15625/1859-3097/14/1/4030

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Articles