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Date Published: 30/09/2020
Online Published: 30/09/2020
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DOI: https://doi.org/10.54607/hcmue.js.17.9.2859(2020)
Issue
Vol. 17 No. 9 (2020)
Section
Articles
How to Cite
Phạm , T. L., Trần , T. H. Y., Trần , T. T., & Ngô , X. Q. (2020). USING WATER QUALITY INDEX (WQI) AND THE BIOLOGICAL DIATOM INDEX (BDI) FOR ASSESSMENT OF THE WATER QUALITY IN THE SAI GON RIVER. HCMUE Journal of Science, 17(9), 1588. https://doi.org/10.54607/hcmue.js.17.9.2859(2020)

USING WATER QUALITY INDEX (WQI) AND THE BIOLOGICAL DIATOM INDEX (BDI) FOR ASSESSMENT OF THE WATER QUALITY IN THE SAI GON RIVER

Thanh Lưu Phạm , Thị Hoàng Yến Trần , Thành Thái Trần , Xuân Quảng Ngô

Main Article Content

Abstract

 


This study aimed to apply the water quality index (WQI) and the biological diatom index (BDI) for assessment of the water quality in the Sai Gon River. Water quality variables and benthic diatom samples were collected in dry and rainy seasons at six stations. In total, 52 diatom species belonging to 18 genera of diatom were identified. Cyclotella, Achnanthidium, Gyrosogma, and Fragillaria were dominant in the upper course sites whereas Melosira, Coscinodiscus, Navicula, and Surrirella were dominant in the lower course sites. The results of this study showed that the WQI and BDI varied from 56 to 67 and 8.6 to 12.8, respectively. According to the WQI values, the water quality in the Sai Gon River was at the moderate status, but the BDI indicated that the water quality was varied between the moderate to poor status in the SG6 station (Thu Thiem area). The results indicated that the BDI index from diatom offered more information of the water quality and ecological status. Therefore, it is better to use diatoms together with the physico-chemical variables in the national water quality assessment.

Keywords

benthic diatom, bioindicator, monitoring, water quality

Article Details

References

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