Chất lượng nước mặt của sông Tiền chảy qua địa phận Tân Châu, tỉnh An Giang

Trúc, Dương Thị; Phát, Phạm Hữu; Nam, Nguyen Dinh Giang; Toàn, Phạm Văn; Trí, Văn Phạm Đăng

doi:10.22144/ctu.jsi.2019.131

Cited by 2 publications

(6 citation statements)

References 10 publications

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“…2b). In general, the temperature in North Vam Nao was similar to that in the former studies [24][25][26]. The higher temperature in the rainy season than in the dry season may be due to the different sampling times between the two seasons.…”

Section: A Evolution Of Surface Water Quality In the Study Area 1) Te...supporting

confidence: 81%

“…When DO concentration is too low, it is a favorable condition to generate odor-causing H2S and reduce the self-cleaning ability of water bodies [24,34]. Compared with DO at the sampling sites on Tien and Hau rivers outside the full-dike area (5.14-5.44 mg/L) [26], DO levels in the current study were low. Low DO indicates the water pollution at in North Vam Nao.…”

Section: ) Oxygen Demandmentioning

confidence: 75%

“…4b). According to [26,33], dissolved oxygen in water depends on temperature, decomposition processes of organic compounds and photosynthesis of aquatic plants. When DO concentration is too low, it is a favorable condition to generate odor-causing H2S and reduce the self-cleaning ability of water bodies [24,34].…”

Section: ) Oxygen Demandmentioning

confidence: 99%

“…The spatial variation of NH4 + -N ranged from 0.39±0.46 to 0.76±0.49 mg/L, with the highest at S7 in the rainy season. The NH4 + -N concentration of this study was lower than that in other rivers and canals [26,40,41]. Domestic, agricultural and industrial wastewater are sources generation of NH4 + -N [6,31,[40][41][42][43][44].…”

Section: ) Nutrientsmentioning

confidence: 99%

“…Domestic, agricultural and industrial wastewater are sources generation of NH4 + -N [6,31,[40][41][42][43][44]. Especially the excessive use of fertilizers and pesticides in agriculture activities [26,42,43]. The seasonal variation of NO3 − -N over the years (0.03±0.01~1.54±0.29 mg/L) and over locations (0.11±0.09~0.56±0.87 mg/L) still within the allowable limit of QCVN 03-MT:2015/BTNMT (2 mg/L) (Fig.…”

Section: ) Nutrientsmentioning

confidence: 99%

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Seasonal Variation and Key Variables Affecting Surface Water Quality in North Vam Nao Area, Vietnam

Giao

2024

IJESD

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Surface water is essential to life, but it is seriously influenced by anthropogenic and natural impacts. Extraction of inside information (for examples sources and key variables influencing water quality) from monitoring data of surface water quality is a crucial task. This study was to intensively evaluate surface water quality in North Vam Nao using Principal Component Analysis (PCA) and Cluster Analysis (CA). The water quality parameters from seven locations during the period 2010–2022 including temperature, pH, total suspended solids (TSS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), nitrate (NO3−-N), ammonium (NH4+-N), orthophosphate (PO43−-P) and coliforms were collected. The results show that surface water quality is seasonally varied, except for pH. The PCA results predicted the main sources of water pollution were possibly hydrological conditions (rainfall, erosion) and human activities (domestic, agricultural and industrial activities). CA classified the water quality into three clusters for both dry and wet seasons. The common pollutants in both seasons were total suspended solids, organic matters, nutrients, and coliform. All the parameters temperature, pH, TSS, DO, BOD, COD, NH4+-N, NO3−-N, PO43−-P and coliform are key surface water parameters needed to be monitored. The results of the current study could be used for designing surface water monitoring at the study area.

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Section: A Evolution Of Surface Water Quality In the Study Area 1) Te...supporting

confidence: 81%

Section: ) Oxygen Demandmentioning

confidence: 75%

Section: ) Oxygen Demandmentioning

confidence: 99%

Section: ) Nutrientsmentioning

confidence: 99%

Section: ) Nutrientsmentioning

confidence: 99%

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Seasonal Variation and Key Variables Affecting Surface Water Quality in North Vam Nao Area, Vietnam

Giao

2024

IJESD

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Variation of Surface Water Quality in Cu Lao Dung Island, Soc Trang Province, Vietnam

Giao¹,

Mi²

2023

IJESD

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The study aims to evaluate variation of surface water quality in canals in Cu Lao Dung district, Soc Trang province, Vietnam using multivariate statistical methods. Sixteen surface water samples with the parameters of pH, total suspended solids (TSS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), NH4+-N, NO2−-N, PO43−-P, Cl−, Fe, coliform were used for the assessment. The results showed that the surface water in the study area was contaminated with microorganisms, salinity and acidity, and nutrient. The concentrations of coliform, Cl−, Fe, TSS and NO2−-N were higher than the specified limits by 4.17, 2.04, 1.91, 1.28 and 1.10 times, respectively. The four principal components could explain up to 81.40% of the total variance of surface water quality. The main water pollution sources could be from natural (rainwater runoff, saltwater intrusion, erosion) and man-made activities from domestic and agricultural activities (livestock, aquaculture, cultivation), industry and navigation activities. Cluster analysis divided surface water quality into two groups by the difference in BOD, COD, NH4+-N, NO2−-N, Fe, coliform and pH. Pearson correlation results demonstrated that only BOD or COD should be monitored since it is mutually predictable. Specific sources and its contribution should be further studied for effective surface water quality management in the study area.

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Chất lượng nước mặt của sông Tiền chảy qua địa phận Tân Châu, tỉnh An Giang

Cited by 2 publications

References 10 publications

Seasonal Variation and Key Variables Affecting Surface Water Quality in North Vam Nao Area, Vietnam

Seasonal Variation and Key Variables Affecting Surface Water Quality in North Vam Nao Area, Vietnam

Variation of Surface Water Quality in Cu Lao Dung Island, Soc Trang Province, Vietnam

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