Seasonal Variation of Physico-chemical Properties in Tube Well Water in few Blocks of Malda District, West Bengal

An investigation on the bacteriological and physico-chemical properties of stored household drinking water in Ado-Ekiti, Nigeria was carried out between April and October, 2008. The drinking water sources considered for examination were harvested rain water, tap water and well water stored in plastic water pots for 2 to 4 days. The waterborne pathogens in the samples that were isolated were characterized for antibiotic resistance. Estimation of bacterial loads in the water samples revealed mean total bacterial count (TBC) of 1.17 × 105, 1.30 × 104 and 9.70 × 104 cfu/ml for rain water, tap water and well water respectively. The mean-total coliform count (TCC) were recorded as 1.57 × 106, 7.40 × 105 and 5.70 × 105 cfu/ml for rain water, tap water and well water respectively. Seven bacteria genera comprising Escherichia (41.7%), Shigella (75%), Klebsiella (33.3%), Pseudomonas (25%), Staphylococcus (25%), Streptococcus (50%) and Enterococcus (20%) were isolated from stored rain water .Three genera comprising Escherichia coli (8.3%), Staphylococcus (25%) and Pseudomonas (75%) were isolated from stored tap water. In well water samples, nine genera comprising Escherichia (50%), Salmonella (100%) Enterococcus (80%) and Shigella (25%) Proteus (100%) Serratia (100%), Klebsiella (66.6%), Staphylococcus (50%) and Streptococcus (50%) were isolated. The antibiotic susceptibility tests showed that the majority of the bacteria isolated particulaly, Escherichia, Salmonella, Enterococcus and Shigella were resistant to common antibiotics which are still available in Nigerian market. The resistance pattern of the bacterial isolates ranged from 50–100% to amoxicillin, tetracycline, streptomycin, cotrimoxazone, erythromycin, gentamicin. In terms of physico-chemical analysis, all the water samples met the WHO standard for drinking water. However, the results obtained revealed that adequate domestic water sanitation and disinfection programmes must be put in place to ensure safety against waterborne antibiotic resistant pathogens especially in developing countries.

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Bacteriological and physico-chemical properties of the Gulshan Lake, Dhaka

Bangladesh Journal of Botany ◽

10.3329/bjb.v40i2.9753 ◽

1970 ◽

Vol 40 (2) ◽

pp. 105-111 ◽

Cited By ~ 1

Author(s):

Mihir Lal Saha ◽

Tahmina Bari ◽

Mahbubar Rahman Khan ◽

Sirajul Hoque

Keyword(s):

Seasonal Variation ◽

Pseudomonas Syringae ◽

Water Samples ◽

Rainy Season ◽

Heterotrophic Bacteria ◽

Bacterial Load ◽

Chemical Properties ◽

Enteric Bacteria ◽

Physico Chemical ◽

Chemical Contents

Seasonal variation on bacterial load irrespective of heterotrophic and enteric bacteria was noticed in Gulshan lack of Dhaka Metropolitan city. The lowest number (1.56×106 cfu/100 ml) in the summer and the highest (19.03×106 cfu/100 ml) were recorded during winter. Among the isolated bacteria 32 were studied in details and provisionally identified as Bacillus cereus (1), B. sphaericus (1), B. subtilis (1), B. brevis (2), B. pasteuri (1), B. stearothermophilus (1), B. azotoformans (1), B. pantothenticus (1), B. licheniformis (1), B. circulans (1), B. insolitus (1), Planococcus citrius (1), Micrococcus sedentarius (1), Pseudomonas. syringae (4), P. aeruginosa (1), P. cichorii (1), Escherichia (2), Klebsiella (1), Aeromonas (1), Proteus (1), Enterobacter (1), Salmonella (2), Yersinia (1), Shigella (1), Hafnia (1), and Alcaligens (1). The temperature and pH of the water samples varied between 24.3 and 29.2º C and 6.54 and 7.12, respectively. Chemical contents (mg/l) like NH4 +-N, NO3 --N and phosphorus ranged 3.06 (Winter) to 14.86 (Summer), 0.32 (in Rainy season) to 13.02 (Summer) and 0.81 (Rainy season) to 1.86 (Summer), respectively. The enteric bacterial load (0.03 × 105 cfu/100 ml in Rainy season to 21.2 × 105 cfu/100 ml in Winter) and the presence of Escherichia, Aeromonas, Enterobacter, Pseudonomas in the samples indicated significant level of microbial pollution of the lake. Key words: Aerobic-heterotrophic; Bacteria; Enteric bacteria; Chemical factorsDOI: http://dx.doi.org/10.3329/bjb.v40i2.9753 Bangladesh J. Bot. 40(2): 105-111, 2011 (December)

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Taxonomy and biodiversity of the genus Oscillatoria Vauch. ex Gom. (Cyanoprokaryota: Oscillatoriales) with ecological notes from Hooghly in West Bengal, India

Brazilian Journal of Biological Sciences ◽

10.21472/bjbs.040710 ◽

2017 ◽

Vol 4 (7) ◽

pp. 89-101

Author(s):

Nilu Halder

Keyword(s):

Aquatic Ecosystems ◽

West Bengal ◽

Chemical Properties ◽

Polluted Water ◽

Reference List ◽

Blue Green Alga ◽

Alkaline Ph ◽

Ecological Data ◽

Blue Green Algae ◽

Physico Chemical

Research articles in the reference list regarding investigation or exploration of Oscillatoriales exhibited that taxonomic study of freshwater blue-green algae has been a subject of interest of research workers and professional scientists for more than one century in India. Oscillatoria Vauch. ex Gom. (Cyanoprokaryota: Oscillatoriales) is a dominant and ubiquitous blue-green alga in Hooghly District of West Bengal, India. Its thallus is consists of unsheathed trichome and contains more than 20 cells in a trichome. The recent study was dealt with the taxonomic enumeration of five species of the genus (O. princeps, O. curviceps, O. sancta, O. limosa, and O. jenensis) which were collected from different freshwater aquatic ecosystems of this district and they were described with ecological data, geographical distributions and colored microphotographs. Here, the relationships between the water chemistry and their occurrences had been also discussed. The analysis of important physico-chemical properties of water revealed that species of Oscillatoria prefer to grow in those water bodies prevailing alkaline pH, sufficient to meet the essential nutrients and contain hard and polluted water.

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Change in physico-chemical properties of soil and nutrients in Desmodium triflorum in case of seasonal variation in Ratnanagar-11, Jirauna, Chitwan, Nepal

International Journal of Scientific Reports ◽

10.18203/issn.2454-2156.intjscirep20174868 ◽

2017 ◽

Vol 3 (11) ◽

pp. 285

Author(s):

Niroj Paudel ◽

Lila Pati Paudel ◽

Prakash Deep Rai ◽

Bishnu Dev Das

Keyword(s):

Seasonal Variation ◽

Rainy Season ◽

Chemical Change ◽

Winter Season ◽

Chemical Properties ◽

Low Ph ◽

Physico Chemical ◽

Phosphorus And Potassium ◽

Nitrogen Phosphorus ◽

Properties Of Soil

Background: Physico-chemical change is described in case of seasonal variation. The plant became grazed in different seasonings; nitrogen, phosphorus and potassium are estimated. The aim of paper is the nutrient uptake of Desmodium triflorum due to the change in season.Methods: The sample is collected as four month interval period the grass is tolerate as low pH. N-1.67–2.04%, P- 0.34–0.61% and K-1.46–4.15%. Results: Soil had lowest concentrations of nitrogen (0.096%), phosphorus (0.004%), and potassium (0.027%) in the rainy season. The highest concentration of nitrogen (0.22%) occurred in summer season, phosphorus (0.005%) in winter and summer seasons, and potassium (0.073%) in the winter season. The carbon/nitrogen (C/N) ratio was highest (15.22:1) in summer and lowest (13.96:1) in the rainy season.Conclusions: Present study will be valuable in evaluation and management of the middle land pastures in Nepal.

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Change in Physico-Chemical Properties of Soil and Nutrients in Desmodium triflorum in Case of Seasonal Variation in Ratnanagar-11, Jirauna, Chitwan, Nepal

International Journal of Environmental Sciences & Natural Resources ◽

10.19080/ijesnr.2017.05.555666 ◽

2017 ◽

Vol 5 (4) ◽

Author(s):

Niroj Paudel

Keyword(s):

Seasonal Variation ◽

Chemical Properties ◽

Physico Chemical ◽

Properties Of Soil

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