scholarly journals Site-wise Mercury Levels in Ulhas River Estuary and Thane Creek near Mumbai, India and its Relation to Water Parameters

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 170-179 ◽  
Author(s):  
J.S. Menon ◽  
S.V. Mahajan
Keyword(s):  
Prime Factor ◽  
Mercury Level ◽  
River Estuary ◽  
Chemical Parameters ◽  
Heavy Load ◽  
Water Parameters ◽  
Industrial Pollutants ◽  
Physico Chemical ◽  
Positive Correlations ◽  
Thane Creek

Ulhas river estuary (73°14′E, 19°14′N to 72°54′E, 19°17′N) and Thane creek (72°55′E, 19°N to 73°E, 19°15′N) near Mumbai, India are highly polluted owing to the heavy load of industrial pollutants and sewage discharge. The traditional fisher-folk living along the banks of Ulhas river estuary and Thane Creek rely on these contaminated fish for their daily sustenance, thereby being exposed to heavy mercury pollution for several years. However, little attention has been given to the levels of mercury in water, its intake and exposure to those populations. In the present study, mercury levels in the waters of Ulhas river estuary and Thane creek has been analysed and its relation with other physico-chemical parameters have been studied. Mercury level was maximum in Wehele station and Alimgarh station with an average of 8.57 ng/ml and minimum at Diwe-Kewni station with 2.6 ng/ml. Vittawa and Airoli stations along Thane creek showed moderate levels with an average of 5.71 ng/ml. The reference site, Khadavli had Hg below the level of detection in the water samples. Study on Hg levels in water showed proximity to the source of discharge to be the prime factor for its elevated levels. Mercury in water depicted positive correlations with temperature and BOD and negative correlations with pH, salinity, hardness and DO.DOI: 10.3126/on.v8i1.4325

scholarly journals Real time monitoring of water Quality using IoT and Deep learning

2021 ◽  
Vol 297 ◽  
pp. 01059
Author(s):  
Saloua Senhaji ◽  
Mohamed Hamlich ◽  
Mohammed Ouazzani Jamil
Keyword(s):  
Water Quality ◽  
Deep Learning ◽  
Real Time ◽  
Environmental Protection Agency ◽  
Short Term Memory ◽  
Chemical Parameters ◽  
Water Parameters ◽  
Term Memory ◽  
Single Board Computer ◽  
Physico Chemical

Access to safe drinking water is one of the most pressing issues facing many developing countries. Water must meet Environmental Protection Agency (E.P.A.) requirements. The normal method of measuring physico-chemical parameters is to take samples manually and send them to the laboratory to check the water quality. In this paper, we proposed a new intelligent design of a real-time water quality monitoring system using Deep Learning technology. This system is composed of several sensors that allow us to measure water parameters (physico-chemical parameters), bacteriological parameters and organoleptic parameters) and to detect the presence of certain substances (undesirable substances, toxic substances) and of a single-board/mobile computer module, Internet and other accessories. Water parameters are automatically detected by the single-board computer. Raspberry Pi3 model B. The single board computer receives the data from the sensors and this data is sent to the web server using the Internet module. It is able to detect the water quality situation worldwide. The data will be analysed in real time. The application of deep learning to these areas has been an important research topic. The Long-Short Term Memory (LSTM) network has been shown to be well suited for processing and predicting large events with long intervals and delays in the time series. LSTM networks have the ability to retain long-term memory.

scholarly journals Cyanobacterial blooms in kaliski region water reservoirs and water quality parameters / Zakwity sinicowe w zbiornikach okolic Kalisza a wskaźniki jakości wody

2015 ◽  
Vol 41 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Dominik Szczukocki ◽  
Radosław Dałkowski ◽  
Barbara Krawczyk ◽  
Renata Juszczak ◽  
Luiza Kubisiak-Banaszkiewicz ◽  
...  
Keyword(s):  
Light Exposure ◽  
Quality Parameters ◽  
Cyanobacterial Blooms ◽  
Cyanobacterial Cell ◽  
Chemical Parameters ◽  
Water Reservoirs ◽  
Nitrogen And Phosphorus ◽  
Water Parameters ◽  
Physico Chemical ◽  
Cyanobacterial Species

Abstract Cyanobacterial blooms occur frequently in artificial lakes, especially in water reservoirs with small retention exposition to anthropopressure. The abundant occurrence of cyanobacteria is accompanied by danger of oxygen imbalance in the aquatic environment and the secretion of toxins that are possible threat to human health and life. Cyanobacterial cell growth depends on a number of physical (temperature, light exposure), chemical (pH, concentration of compounds containing nitrogen and phosphorus) and biological (the presence of other organisms) factors. This paper presents the results of the analysis of water from reservoirs located in southern Wielkopolska region (Pokrzywnica-Szałe, Gołuchów and Piaski-Szczygliczka). Some important physico-chemical parameters of water samples taken from investigated reservoirs as well as cyanotoxins concentration were determined. Furthermore, the cyanobacterial species were identified. There was also an attempt made to correlate the water parameters with the cyanobacteria development and cyanotoxins production. On the basis of the results obtained in the analyzed season, it can be concluded that water from Pokrzywnica and Gołuchów reservoirs was rich in nutrients, hence the intense cyanobacterial blooms and cyanotoxins in water were observed

scholarly journals Comparative Assessment of Physico-Chemical Parameters of Lotic and Lentic Zone of River Betwa in Jhansi (U.P.), India

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Umesh Kumar Mishra ◽  
Vijay Kumar Yadav
Keyword(s):  
Water Temperature ◽  
Electric Conductivity ◽  
Comparative Assessment ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Human Race ◽  
Water Parameters ◽  
Physico Chemical ◽  
Two Samples

Water is the most precious natural gift given by God to human race. Its purity is also important for everyone. For the present study two sampling stations, Baratha village and Parichha dam head were selected for comparative assessment of physico-chemical parameters of lotic and lentic zones on Betwa river. Both these sampling stations are located at Jhansi (UP) India. Samples were collected regularly for one complete year from July 2018 to June 2019. Eighteen water parameters and four hundred thirty two samples were analysed. The overall mean ranges of these parameters at Baratha village and Parichha dam head were notified as electric conductivity (518.66±43.47) and (528.75±59.65), pH (8.09±0.36) and (8.14±0.26), water temperature (24.37±4.14) and (23.78±4.12), transparency (54.91±4.97) and (41.61±3.83), turbidity (30±12.38) and (35.25±16.38), TDS (265.33±16.74) and (267.66±25.42), TSS (66.5±12.52) and 69.83±14.45), TS (331.83±28.76) and (337.5±39.04), DO (6.76±0.68) and (6.72±0.86), total alkalinity (141.58±22.74) and (142.25±29.37), total hardness (150.08±22.70) and (153.66±20.55), Ca (29.04±2.32) and (29.84±5.38), Mg (13.51±2.01) and (14.32±2.20), chloride (24.77±3.29) and (26.85±3.99), BOD (4.08±0.71) and (4.15±1.16), COD (11.64±1.02) and (12.82±1.20), NO3 (1.64±0.37) and (1.93±0.59), PO4 (0.46±0.21) and (1.33±0.29). All these findings concluded that the lentic zone (Parichha) is more polluted than the lotic zone (Baratha). However all the observed values are in the range of permissible limits, so both zones can be used for irrigation and fisheries sector.

scholarly journals Preliminary Study to Find Occurrence and Dynamics of Toxic Cyanobacteria in Nuwara wewa and Nachchaduwa wewa, Two Man-made Reservoirs in Sri Lanka

2018 ◽  
Vol 6 (5) ◽  
pp. 179-191
Author(s):  
M.C.M. Zakeel ◽  
P.A. Weerasinghe ◽  
H.C.D. Wijayawardhana ◽  
B.A.D.G. Kumari
Keyword(s):  
Cyanobacterial Bloom ◽  
Aquatic Organisms ◽  
Rrna Gene ◽  
Chemical Parameters ◽  
Toxic Cyanobacteria ◽  
Physico Chemical ◽  
Microcystin Production ◽  
Preliminary Study ◽  
Positive Correlations ◽  
Drinking Purpose

Bloom of cyanobacteria in water bodies causes devastating problems to the ecosystem and humans when they depend on these waters for drinking purpose. Microcystin and nodularin, produced by some cyanobacteria, are toxic for human and many other aquatic organisms. Nuwara wewa and Nachchaduwa wewa are two important reservoirs supplying water for drinking purpose in addition to agricultural use. Therefore, preliminary study was conducted to evaluate these reservoirs for the presence of toxic cyanobacteria and their dynamics is of importance to take proper measures to control cyanobacterial growth and to ensure supply of quality water for human drinking purpose. Water samples were collected for 12 months from both reservoirs and physic-chemicals parameters of water were also recorded. Correlations between the physico-chemical parameters of water and the cyanobacterial density were established. Toxic cyanobacteria were isolated and identified using conventional and molecular methods. 16S rRNA gene and mcy-A gene were targeted for molecular identification using PCR. Cyanobacterial density had strong positive correlations with some physico-chemical parameters such as pH, temperature and dissolved oxygen in both reservoirs. These parameters can be used as good indicators to evaluate the condition these reservoirs with respect to cyanobacterial bloom. Some cyanobacterial isolates recovered from both reservoirs harboured mcy-A gene, showing the potential of microcystin production.

scholarly journals Comparative Physico-Chemical Limnology of Two Lakes of Kashmir Himalaya

2018 ◽  
Vol 5 (2) ◽  
pp. 128 ◽  
Author(s):  
Tanveer Bhat Hassan ◽  
R. Arnold ◽  
R.M. Mishra
Keyword(s):  
Trophic Status ◽  
Kashmir Himalaya ◽  
Anthropogenic Stress ◽  
Chemical Parameters ◽  
Anthropogenic Pressures ◽  
Heavy Load ◽  
Pollution Levels ◽  
Dal Lake ◽  
Physico Chemical ◽  
Manasbal Lake

In the present paper an effort has been made to evaluate the trophic status of two lakes viz; Dal Lake and Manasbal Lake on the basis of physico-chemical parameters criterion. Four ecologically different habitats in each lake were selected for the present study i.e DL1-DL4 & MS1-MS4 in Dal and Manasbal Lake respectively. The rate of pollution in both the lakes varied from basin to basin as well as lake to lake. It has been observed that both lakes are subjected to anthropogenic stress in the form of nutrient enrichment which changes the overall trophic status of both the lakes. However, the stress is more pronounced in Dal Lake as compared to Manasbal Lake which shows higher pollution levels as depicted by physico-chemical parameters. While the rural lake (Manasbal) is marching towards high trophic nature as a result of heavy influx of nutrients from the catchment area, the urban valley lake (Dal) operating under tremendous anthropogenic pressures receives heavy load of pollutants leading to its rapid trophic evolution in the form of eutrophication.

Comparative analysis of physico-chemical parameters of some river systems of Ebonyi State, Nigeria

2020 ◽  
Vol 34 (1) ◽  
pp. 33-41
Author(s):  
M.O. Nwabunike ◽  
G.V.C. Igwe ◽  
I.J. Ochokwu
Keyword(s):  
Natural Water ◽  
Control Experiment ◽  
Pond Water ◽  
Water Bodies ◽  
Fish Production ◽  
Chemical Parameters ◽  
Water Parameters ◽  
Physico Chemical ◽  
Water Fish ◽  
Natural Water Bodies

The study comparatively analyzed the general physico-chemical parameters of five different water bodies to assess their suitability for fish production. Four water bodies (Enyigba, Mkpuma, Ameka and Ebonyi) close to quarry sites were selected while the fifth was a culture pond water which served as the control experiment. The water parameters: pH, temperature, dissolved oxygen (DO), free CO2 and transparency were examined using standard methods for 24 months. The results showed that the pattern of temperature variation in all the water bodies examined followed a similar trend with the lowest value observed between December and January. The pond water showed slightly varied pH levels compared to the natural water bodies. The DO contents of Ebonyi, Mkpuma and Enyigba were higher than those recorded from Ameke and pond. Relatively, lower concentrations of free CO2 were recorded in the pond water and Ebonyi river during the harmattan period (December to January) and below the detectable levels. The variation of Sechi disc depth was higher in Enyigba when compared with other water bodies all through the period of the experiment. The trend of transparency was the same in all the water bodies. Keywords: Physico-chemical parameters, natural water bodies, pond water, fish production, Ebonyi State

Spatial and seasonal variations in physico-chemical parameters of the Imo River Estuary, Niger Delta, Nigeria

2020 ◽  
Vol 35 (1) ◽  
pp. 29-38
Author(s):  
L. E. Obuba ◽  
A.A. Nlewadim ◽  
A. Uka
Keyword(s):  
Water Quality ◽  
Coastal Wetlands ◽  
River Estuary ◽  
Oxygen Demand ◽  
Principal Component ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Chemical Factors ◽  
Analysis Of Results

Variations in the water quality of the Imo River estuary was investigated by measuring values of selected physico-chemical parameters. Samples were collected bi-monthly between April 2015 and March 2016, covering the dry and wet seasons of the year. Three stations were selected: upstream (Kalibiama), midstream (Opobo) and downstream (Queenstown). Analysis of results showed that physico-chemical parameters were affected more on seasonal than spatial scale. Principal component analysis carried out indicated that values of most of the parameters recorded within the stations clustered together. On the other hand, dispersed values were recorded in months and seasons with significant variations at (p≤0.05) among most parameters. The high spatial variations in phosphates, suspended solids and lead could be associated to human activities like laundry and waste disposal within Opobo and Kalibiama stations. While, high seasonal variability in most parameters could be associated with intense sunshine, cloud cover and tidal intrusion/dilution due to runoff. It can be concluded that nutrient fluxes due to nitrogenous fertilizers are not a problem within the estuary. However, chemical factors and biodegradable components which cause fluctuations in biological oxygen demand are more of the challenge. Keywords: Land-use, nutrient flux, water-quality, pollution, coastal wetlands.

A baseline study of physico-chemical parameters and trace metals in waters of Uppanar River estuary, Tamil Nadu, India

2006 ◽  
Vol 25 (S1) ◽  
pp. 193-193
Author(s):  
Thangadurai Natarajan ◽  
Srinvasalu Seshachalam ◽  
M. P. Jonathan ◽  
T. Ayyamperumal ◽  
J. Sivaramakrishnan
Keyword(s):  
Trace Metals ◽  
Tamil Nadu ◽  
River Estuary ◽  
Chemical Parameters ◽  
Baseline Study ◽  
Physico Chemical

scholarly journals Zooplankton Diversity in Relation to Physico-Chemical Parameters in Subtropical Pond of Jammu, Jammu and Kashmir, India

2019 ◽  
Vol 16 (2) ◽  
pp. 425-439
Author(s):  
Arti Sharma ◽  
Meenu Sharma
Keyword(s):  
Diversity Index ◽  
Mesh Size ◽  
Diversity Indices ◽  
Chemical Parameters ◽  
Jammu And Kashmir ◽  
Water Parameters ◽  
Silk Cloth ◽  
Wiener Diversity Index ◽  
Physico Chemical ◽  
Taxonomic Groups

The study aim to investigate the zooplankton diversity in relation to physico-chemical parameters of surface water in Barnai pond of Jammu district. Water parameters were analysed by following various standard methods, where as zooplankton were collected through the plankton net of standard bolting silk cloth no. 25 (mesh size 0.003-0.004 μm) and the total number of zooplankton was counted by using Drop count method. Statistical analysis of data involves Pearson’s Correlation analysis and various diversity indices viz; Shannon-Wiener diversity index (H´), Simpson’s Index (D), Margalef’s Index (d´) and Pielou’s Evenness (J). A total of 38 zooplankton taxa along with Nauplius larvae were observed belonging to 5 major taxonomic groups: Protozoa (6 species), Rotifera (21species), Cladocera (6 species), Copepoda (3 species) and Ostracoda (2species). Physico-chemical parameters of Barnai pond revealed well marked fluctuations with maxima and minima values of each parameter during specific seasons and zooplankton analysis revealed seasonal variations with an increase during summer and a fall during winter and monsoon seasons.

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