scholarly journals Physico-Chemical Parameters and Heavy Metal Levels in Water and Fish Samples from River Jakara and Jakara Dam, Kano State, Nigeria

2015 ◽  
Vol 27 (10) ◽  
pp. 3794-3798
Author(s):  
V.E. Agbazue ◽  
N.R. Ekere ◽  
M.I. Samira
Keyword(s):  
Heavy Metal ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Fish Samples ◽  
Metal Levels

scholarly journals Keban Baraj Gölü Örencik Mevkiinden (Elazığ) Yakalanan Capoeta trutta’nın Kas Dokusundaki Bazı Ağır Metal Düzeylerinin Karşılaştırılması

2021 ◽  
Vol 9 (7) ◽  
pp. 1250-1257
Author(s):  
Özgür Canpolat ◽  
Metin Çalta
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Muscle Tissue ◽  
Fish Species ◽  
Human Consumption ◽  
Potential Health ◽  
Fish Samples ◽  
Metal Levels ◽  
Biological Aspects ◽  
The Relationship

Keban Dam Lake is the second largest dam lake in Turkey. In addition, it has the feature of being one of the most important dam lakes in our country in terms of both aquaculture potential and electricity generation. In this study, fish samples belong to Capoeta trutta caught from Örencik region of Keban Dam Lake were used. The concentrations of some heavy metals (copper, iron, zinc, chromium, nickel, cadmium, arsenic and mercury) in muscle of Capoeta trutta and the potential health risk from consumption of this fish species were examined. In addidion, the relationship between the heavy metal levels and some biological aspects of fish (weight, length and sex) were determined. As a result of the study, it was determined that the most and the least accumulated heavy metals in the muscle tissue of Capoeta trutta were zinc and cadmium respectively. The concentration of heavy metals showed differences according to weight, length and sex of fish. The results were found indicated that heavy metal levels in the muscle tissue of Capoeta trutta are below the tolerable values recommended by EPA, WHO and FAO. Therefore, there is not any risk for human consumption of this fish species.

Spatial distribution and risk assessment of radioactivity and heavy metal levels of sediment, surface water and fish samples from Lake Van, Turkey

2014 ◽  
Vol 300 (3) ◽  
pp. 919-931 ◽  
Author(s):  
Sema Erenturk ◽  
Sabriye Yusan ◽  
D. Alkim Turkozu ◽  
Zeyneb Camtakan ◽  
M. Kirami Olgen ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Surface Water ◽  
Sediment Surface ◽  
Lake Van ◽  
Fish Samples ◽  
Metal Levels

Pharmacognostical and Phytochemical Studies of Notonia grandiflora Wall

2021 ◽  
pp. 5335-5340
Author(s):  
Meera Paul ◽  
Sanilkumar R. ◽  
Sabu M.C
Keyword(s):  
Heavy Metal ◽  
Ash Content ◽  
Cortical Region ◽  
Vascular Bundles ◽  
Chemical Parameters ◽  
Crude Drug ◽  
Succulent Plant ◽  
Physico Chemical ◽  
Palisade Cells ◽  
Phytochemical Studies

Pharmacognostic evaluation is the first and foremost step to determine the identity and to assess the quality and purity of the crude drug. Notonia grandiflora is a perennial succulent plant, widely used in traditional medicinal system without standardisation. Notonia grandiflora has reported to possess various pharmacological activities such as analgesic and antinociceptive, anti-inflammatory, antimicrobial, antibacterial, antifungal, and antipyretic. In the present study, pharmacognostic studies of root, stem, and leaf of Notonia grandiflora is carried out in order to standardize the plant. For standardization of plant material morphological and anatomical characterization was carried out. Physico-chemical parameters viz. ash content, extractive values, heavy metal content was carried out. Transverse section of Notonia grandiflora root shows periderm, cortex xylem parenchyma showing tracheids and phloem. Stem shows epidermis covered externally by cuticle, cortex, vascular bundles and pith. Calcium oxalate crystals, leaf and branch traces were also present in the cortical region of the stem. Leaf lamina showed palisade cells and spongy parenchyma in mesophyll region and anisocytic type of stomata. Powder characters and physico-chemical parameters such as moisture content, extractive values, ash content and heavy metal analysis were performed. The results of current study could be served as a diagnostic tool for the standardization of this medicinal plant and will be helpful in characterization of the crude drug.

scholarly journals Spatio-Temporal Analysis of Surface Water Quality in Mokopane Area, Limpopo, South Africa

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 220
Author(s):  
Mmasabata Dolly Molekoa ◽  
Ram Avtar ◽  
Pankaj Kumar ◽  
Huynh Vuong Thu Minh ◽  
Rajarshi Dasgupta ◽  
...  
Keyword(s):  
South Africa ◽  
Water Quality ◽  
Heavy Metal ◽  
Land Use ◽  
Surface Water ◽  
Water Samples ◽  
Surface Water Quality ◽  
Quality Data ◽  
Chemical Parameters ◽  
Physico Chemical

Considering the well-documented impacts of land-use change on water resources and the rapid land-use conversions occurring throughout Africa, in this study, we conducted a spatiotemporal analysis of surface water quality and its relation with the land use and land cover (LULC) pattern in Mokopane, Limpopo province of South Africa. Various physico-chemical parameters were analyzed for surface water samples collected from five sampling locations from 2016 to 2020. Time-series analysis of key surface water quality parameters was performed to identify the essential hydrological processes governing water quality. The analyzed water quality data were also used to calculate the heavy metal pollution index (HPI), heavy metal evaluation index (HEI) and weighted water quality index (WQI). Also, the spatial trend of water quality is compared with LULC changes from 2015 to 2020. Results revealed that the concentration of most of the physico-chemical parameters in the water samples was beyond the World Health Organization (WHO) adopted permissible limit, except for a few parameters in some locations. Based on the calculated values of HPI and HEI, water quality samples were categorized as low to moderately polluted water bodies, whereas all water samples fell under the poor category (>100) and beyond based on the calculated WQI. Looking precisely at the water quality’s temporal trend, it is found that most of the sampling shows a deteriorating trend from 2016 to 2019. However, the year 2020 shows a slightly improving trend on water quality, which can be justified by lowering human activities during the lockdown period imposed by COVID-19. Land use has a significant relationship with surface water quality, and it was evident that built-up land had a more significant negative impact on water quality than the other land use classes. Both natural processes (rock weathering) and anthropogenic activities (wastewater discharge, industrial activities etc.) were found to be playing a vital role in water quality evolution. This study suggests that continuous assessment and monitoring of the spatial and temporal variability of water quality in Limpopo is important to control pollution and health safety in the future.

scholarly journals Health Risk Assessment of Liza parsia Fish Lipids: Heavy Metals and DDTs Contaminations

2021 ◽  
Vol 15 (3) ◽  
pp. 195-204
Author(s):  
Md. Abu Rayhan Khan ◽  
◽  
Muhammad Shamim Al Mamun ◽  
Mosummath Hosna Ara ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risk ◽  
Anthropogenic Activities ◽  
Hazard Quotient ◽  
Target Hazard Quotient ◽  
Toxic Substances ◽  
Organic Part ◽  
Fish Samples ◽  
Metal Levels

Background: Fish is a source of nutrition; however, toxic substances and heavy metals may enter human body due to consuming contaminated fish. The aim of this study was to investigate the levels of heavy metals and DDTs in Liza parsia, a fish species, and assess the health risk of the contaminants in the fish samples. Methods: The extracted fish lipid was added with n-hexane and H2SO4 and was kept for long time. The upper organic part was collected for the analysis of DDTs by gas chromatography equipped with electron capture detector. The fish samples were homogenized by wet digestion method, and the heavy metal contents were analyzed, using an atomic absorption spectrophotometer. The health risks of the fish samples were assessed based on target hazard quotient and target cancer risk. Results: The pesticide contents of DDT, DDD, DDE and DDTs in the fish samples were 0.0414, 0.000253, 0.015 and 0.0567ng/g, respectively. Also, the mean concentrations of Mn, Fe, Cu and Zn were 35.42±10.05, 318.75±242.45, 41.67±4.78 and 281.25±5.42 mg/kg, respectively. Of note, the Cd and Pb contents were below the detection limits. The concentrations of other heavy metals were above the reference limits, which can cause various disease processes. Conclusion: The contents of four heavy metals and DDTs in the samples were above the limits. The main sources of these substances are likely due to human anthropogenic activities. Fish and other edible aquatic animals should be monitored regularly and the heavy metal levels be determined and declared to the public.

scholarly journals ASSESSMENT OF SEASONAL PHYSICO-CHEMICAL PARAMETERS OF OGUTA LAKE, NIGERIA.

2016 ◽  
Vol 11 (7) ◽  
pp. 3759-3764
Author(s):  
Ukiwe L.N ◽  
C.I.A Nwoko ◽  
U.U. Egereonu ◽  
S.N. Ukachukwu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Seasonal Variation ◽  
Analytical Methods ◽  
Rainy Season ◽  
Oxygen Demand ◽  
Chemical Parameters ◽  
Anthropogenic Inputs ◽  
Physico Chemical ◽  
Dry Seasons

Seasonal variation of physico-chemical variables of Oguta Lake, Nigeria was studied. Results obtained using standard analytical methods indicated that in the rainy and dry seasons (July and August) and (October and November), 2014, iron (Fe; 1.401 mg/l in November) was the overall metal observed in the lake, while mercury (Hg) was not detected throughout the period of study. Heavy metals concentrations observed were higher (not significantly) during the dry than the rainy season. The values observed for dissolved oxygen (DO), biological and chemical oxygen demand (BOD and COD) were within WHO permissible limits. The above evidence revealed that there was signs of heavy metal (Fe) pollution of the lake, and steps must be taking for constant monitoring of anthropogenic inputs into the lake. 

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