scholarly journals Determination of water quality, trace elements contamination in Oreochomis niloticus and Clarias gariepinus reared in 2 types of ponds and health risk assessment in Cameroon

2020 ◽  
Author(s):  
Isabelle Sandrine Bouelet Ntsama ◽  
Betrand Ayuk Tambe ◽  
Christine Fernande Nyangono Biyegue ◽  
Guy Pouokam ◽  
Hélène Claudia Mentho ◽  
...  

Abstract Background: Fish farming in Cameroon is growing very rapidly and fish available in the markets is mostly coming from fish farms, but domestic fish production is still low to meet demand. Intensification of production could lead to the occurrence of various types of contaminants that can affect the sanitary quality of farmed fish and consumer health. This study aimed to assess the quality of farmed fish collected in fish farms located in four regions of Cameroon (Center, South, West, Littoral).Results: Concentrations of arsenic, cadmium, lead, chromium, cobalt, and nickel were determined in pond water and muscles of Oreochromis niloticus and Clarias gariepinus raised in concrete and earthen ponds to evaluate health risk for consumers. Trace elements were determined using Inductively Coupled Plasma Optical Emission spectrometry (ICP-OES). Heavy metals in water for concrete and earthen ponds shows there are no significant differences (p<0.05) between the rearing systems except for cobalt and nickel. Heavy metals concentrations in water were lower when compared to the WHO recommended limits except for cadmium in all the ponds. For concrete ponds, heavy metal concentrations decreased in water in the sequence of Cd > As > Co > Ni > Cr > Pb. For earthen ponds the concentrations decreased as Cd > Co > As > Ni > Cr > Pb.Conclusion: Concentrations recorded in the muscles of the 2 species were above the safety limits recommended by FAO/WHO. The target hazard quotient of As was highest compared to other metals and higher than the acceptable limits according to US Environmental Protection Agency guidelines in all fish species. the level of each investigated metal, highlighted a very low health risk for consumers.

2019 ◽  
Vol 10 (2) ◽  
pp. 244-253
Author(s):  
Laila D Abd El-Samee ◽  
Yasser A Hamouda ◽  
Samia M Hashish ◽  
Mosaad A Abdel-Wahhab

This study was conducted to determine heavy metals and trace elements content in tilapia fish collected from three sources in Damietta governorate, Egypt and to evaluate the human health risk due to tilapia consumption. Tilapia samples were collected from two locations in the River Nile stream, tow fish farms and two sluiceways. Health risk assessment was evaluated based on the consumption habits of adult human. The results revealed that all samples vary in elements concentrations. The calculation of human health risk revealed that the consumption of tilapia in the three tested area does not pose any health risk except for Selenium. It could be concluded that consumption of such fish may be a risk for consumers who eat fish more than one time per week. Consequently, precautions should be taken and warning against eating tilapia fish caught from these regions should be announced.


Author(s):  
Sayyed Mohammad Ali Noori ◽  
Mohammad Hashemi ◽  
Sajjad Ghasemi

Abstract: Saffron is one of the most expensive spices in the world, and its popularity as a tasty food additive is spreading rapidly through many cultures and cuisines. Minerals and heavy metals are minor components found in saffron, which play a key role in the identification of the geographical origin, quality control, and food traceability, while they also affect human health. The chemical elements in saffron are measured using various analytical methods, such as techniques based on spectrometry or spectroscopy, including atomic emission spectrometry, atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry, and inductively coupled plasma mass spectrometry. The present study aimed to review the published articles about heavy metals and minerals in saffron across the world. To date, 64 chemical elements have been found in different types of saffron, which could be divided into three groups of macro-elements, trace elements, and heavy metals (trace elements with a lower gravity/greater than five times that of water and other inorganic sources). Furthermore, the chemical elements in the saffron samples of different countries have a wide range of concentrations. These differences may be affected by geographical condition such as physicochemical properties of the soil, weather and other environmental conditions like saffron cultivation and its genotype.


2009 ◽  
Vol 27 (Special Issue 1) ◽  
pp. S390-S393 ◽  
Author(s):  
T. Tóth ◽  
J. Tomáš ◽  
P. Lazor ◽  
D. Bajčan ◽  
K. Jomová

The problems of soil hygiene and contents of the following heavy metals: cadmium, cobalt and nickel in the productive parts of plants in the location of Agricultural Cooperative Štrba in Poprad County were discussed in the presented work. Above-mentioned location is found in the neighbourhood with a chemical factory Chemosvit Svit. The achieved results show that the soil hygiene in this region is mainly affected by the activity of this chemical factory. This factory is producing many risky substances and their results can be seen in the condition of soil hygiene and in the quality of farmed plants. The results of monitored heavy metals (Cd, Co, Ni) prove that the content of cadmium and nickel is the main polluting factor of soil in this region. The increased contents of these elements in soil produce a high risk of the uptake to plants. This further affects the technological quality along with the quality of hygiene of farmed products and finally the food itself as well. A higher attention needs to be paid to cobalt too, because it proved quite high cumulation ability in soil.


2020 ◽  
Vol 24 (5) ◽  
pp. 261-277
Author(s):  
Zakaria I. M. El-Khatib ◽  
Ahmad M. Azab ◽  
Hamdy A. H. Abo-Taleb ◽  
Ahmed N.M. Al-Absawy ◽  
Mohamed M.M. Toto

2013 ◽  
Vol 444 ◽  
pp. 128-137 ◽  
Author(s):  
I. Kalantzi ◽  
T.M. Shimmield ◽  
S.A. Pergantis ◽  
N. Papageorgiou ◽  
K.D. Black ◽  
...  

2019 ◽  
Vol 10 (07) ◽  
pp. 942-957
Author(s):  
Marius Kounbèsiounè Somda ◽  
Donatien Kabore ◽  
Iliassou Mogmenga ◽  
Cheik A. T. Ouattara ◽  
Assietta Ouattara ◽  
...  

2019 ◽  
Vol 96 (12) ◽  
pp. 1192-1195 ◽  
Author(s):  
V. N. Rakitskii ◽  
T. V. Yudina ◽  
Marina V. Egorova ◽  
N. S. Kutakova

There are presented methodological approaches to assess the risk of negative factors associated with characteristic areas of metallurgical enterprises in pollution of the environment with heavy metals to human health. The use of noninvasive biotesting, based on established correlations of indices of trace elements and oxidative status in the body is suggested. As a non-invasive biological material, alveolar moisture condensate from the person (expirate) is used. The basis for the health risk assessment is information on the balance of two components of the oxidative process responsible for the adaptive function of the body - free radical oxidation and antioxidant defense system. An imbalance of these processes contributes to the development of oxidative stress, the complication of the course of many diseases. The deviation in quantitative indices of a number of elements, primarily of metals of variable valency, which participate in reactions of lipid peroxidation, showing pro - or antioxidant properties can also serve as the indicator of the effects of complex heavy metals. The identified relationship of trace elements and oxidative status allows providing the approach to the assessment of processes of peroxidation in the assessment of microelement exchange indirectly. To study the intensity of peroxidation and capacity of the antioxidant defense system in expirate a number of methodological solutions was proposed - methods of chemiluminescence and spectrophotometry, as well as biotest, allowing detect deviations in the oxidative status and based on the level of bioluminescence of lyophilized bacteria by oxidative potential of investigated expirate of alveolar moisture. The complex of methods for assessment of the degree of the health risk associated with pollution by heavy metals can be used for screening observations in selected contingents with the purpose of formation of risk groups such as individually for the choice the optimal ways of correction of disorders and the assessment of the efficiency of preventive or corrective measures. Examples of methodological approaches in one of the regions of accommodation of the enterprises of nonferrous metallurgy, and in the estimation of risk development of pathological conditions and the efficiency of the treatment for a particular worker of the metallurgical plant, as the patient in the clinic of occupational diseases.


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