Capacitive Detection and Quantification of Water Suspended Solids

An attempt has been made to study the Physico-chemical condition of water of Yamuna River at Gokul Barrage, Mathura, (UP). The time period of study was July 2015 to June 2016. Three water samples were selected from different sites in each month for study. The parameters studied were Temperature, Turbidity, pH, DO, BOD, COD, Total Dissolved Solids and Suspended Solids. Almost all the parameters were found above the tolerance limit.

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OPTICAL DETECTION AND QUANTIFICATION OF RADIOCARBON DIOXIDE (14CO2) AT AND BELOW AMBIENT LEVELS

Proceedings of the 72nd International Symposium on Molecular Spectroscopy ◽

10.15278/isms.2017.mk08 ◽

2017 ◽

Author(s):

David Long ◽

Joseph Hodges ◽

Qingnan Liu ◽

Adam Fleisher

Keyword(s):

Optical Detection ◽

Ambient Levels ◽

Detection And Quantification

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Establishing an empirical equation for the relationship between total suspended solids and total phosphorus concentrations in the downstream Red river water

Tạp chí Khoa học và Công nghệ Biển ◽

10.15625/1859-3097/20/3/14789 ◽

2020 ◽

Vol 20 (3) ◽

pp. 325-332

Author(s):

Le Nhu Da ◽

Le Thi Phuong Quynh ◽

Phung Thi Xuan Binh ◽

Duong Thi Thuy ◽

Trinh Hoai Thu ◽

...

Keyword(s):

Total Phosphorus ◽

Suspended Solids ◽

Empirical Relationship ◽

Water Environment ◽

Total Suspended Solids ◽

River System ◽

Red River ◽

Reservoir Impoundment ◽

Downstream Section ◽

Reasonable Prediction

Recently, the Asian rivers have faced the strong reduction of riverine total suspended solids (TSS) flux due to numerous dam/reservoir impoundment. The Red river system is a typical example of the Southeast Asian rivers that has been strongly impacted by reservoir impoundment in both China and Vietnam, especially in the recent period. It is known that the reduction in total suspended solids may lead to the decrease of some associated elements, including nutrients (N, P, Si) which may affect coastal ecosystems. In this paper, we establish the empirical relationship between total suspended solids and total phosphorus concentrations in water environment of the Red river in its downstream section from Hanoi city to the Ba Lat estuary based on the sampling campaigns conducted in the dry and wet seasons in 2017, 2018 and 2019. The results show a clear relationship with significant coefficient between total suspended solids and total phosphorus in the downstream Red river. It is expressed by a simple equation y = 0.0226x0.3867 where x and y stand for total suspended solids and total phosphorus concentrations (mg/l) respectively with the r2 value of 0.757. This equation enables a reasonable prediction of total phosphorus concentrations of the downstream Red river when the observed data of total suspended solids concentrations are available. Thus, this work opens up the way for further studies on the calculation of the total phosphorus over longer timescales using daily available total suspended solids values.

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ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES FISHING INDUSTRY ◽

10.24143/2073-5529-2017-1-62-66 ◽

2017 ◽

pp. 62-66

Author(s):

Truong Van Tuan ◽

Irina Vladimirovna Volkova

Keyword(s):

Bottom Sediment ◽

Bottom Sediments ◽

Water Samples ◽

Suspended Solids ◽

Natural Habitat ◽

Bottom Layer ◽

Sediment Samples ◽

Natural Breeding ◽

System Water ◽

Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

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