scholarly journals Copper, zinc, mercury and arsenic content in Micropogonias furnieri and Mugil platanus of the Montevideo coastal zone, Río de la Plata

2016 ◽  
Vol 64 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Diego Corrales ◽  
Alicia Acuña ◽  
María Salhi ◽  
Gustavo Saona ◽  
Ernesto Brugnoli
Keyword(s):  
Coastal Zone ◽  
High Mobility ◽  
Human Consumption ◽  
Arsenic Content ◽  
Fish Length ◽  
Safety Level ◽  
Cu Content ◽  
Copper Zinc ◽  
Standard Values ◽  
Micropogonias Furnieri

Abstract Metals (Cu, Zn, Hg) and metalloid (As) concentrations were measured in Micropogonias furnieri and Mugil platanus caught in three areas along the Montevideo coastal zone during winter 2010, spring 2010 and 2011. Compared to previous studies conducted in the zone, both species showed higher (for Cu), similar (for Zn) or lower (for Hg) concentrations. The highest Hg values were found in the M. furnieri of Montevideo bay. There was no spatial variation in Cu, Zn, and As concentrations in muscle, likely due to the high mobility of both species. However, the Cu content in the liver of M. furnieri was higher in fish from the West zone. Cu, Zn and As found in the liver of M. platanus were much higher than in that of M. furnieri. A functional relationship between muscle levels of Zn and Hg and fish length of M. furnieri indicates bioaccumulation of these metals. According to the results, M. furnieri may be used as a temporal bioindicator for Hg, but not as a spatial bioindicator. Mercury levels were below the maximum safety level based on international standard values for human consumption.

scholarly journals Cadmium, Lead, Copper, Zinc, and Iron Concentration Patterns in Three Marine Fish Species from Two Different Mining Sites inside the Gulf of California, Mexico

2021 ◽  
Vol 18 (2) ◽  
pp. 844
Author(s):  
Elisa Serviere-Zaragoza ◽  
Salvador E. Lluch-Cota ◽  
Alejandra Mazariegos-Villarreal ◽  
Eduardo F. Balart ◽  
Hugo Valencia-Valdez ◽  
...  
Keyword(s):  
Fish Species ◽  
Gulf Of California ◽  
Anthropogenic Activities ◽  
Iron Concentration ◽  
Dry Weight ◽  
Human Consumption ◽  
Metal Concentrations ◽  
Mining Sites ◽  
Copper Zinc ◽  
Cadmium Lead

In the Gulf of California; mineral deposits have contributed to high metal contents in coastal environments. This study examined cadmium; lead; copper; zinc; and iron contents in three fish species; Kyphosus vaigiensis (herbivore), Stegastes rectifraenum (omnivore), and Balistes polylepis (carnivore) at two mining sites. Metal concentrations were analyzed by atomic absorption spectrophotometry and stable nitrogen and carbon isotopes were estimated using mass spectrophotometry. Also, we assessed the risk to human health from the consumption of these three species based on permissible limits; although only two of them (Kyphosus and Balistes) are consumed as food. Metal concentrations differed among fish species; except for iron. The highest concentrations of metals were not always recorded in the species at the highest trophic level; i.e., Balistes. The highest concentrations (dry weight) recorded were cadmium (0.21 ± 0.03 µg g−1) and lead (1.67 ± 0.26 µg g−1), in S. rectifraenum; copper (1.60 ± 0.49 µg g−1) and zinc (67.30 ± 8.79 µg g−1), in B. polylepis; and iron (27.06 ± 2.58 µg g−1), in K. vaigiensis. Our findings show that each element accumulates differently in particular marine organisms; depending on the physiology of the species and the biogeochemistry of its habitat; which in turn is affected by the anthropogenic activities in adjacent areas. No risk of heavy metals toxicity is expected from the human consumption of the species and sites studied

scholarly journals Determination of Mercury, Methylmercury and Selenium Concentrations in Elasmobranch Meat: Fish Consumption Safety

2022 ◽  
Vol 19 (2) ◽  
pp. 788
Author(s):  
Arianna Storelli ◽  
Grazia Barone ◽  
Rita Garofalo ◽  
Antonio Busco ◽  
Maria Maddalena Storelli
Keyword(s):  
Total Mercury ◽  
Health Benefit ◽  
Absorption Spectrometry ◽  
Human Consumption ◽  
Apex Predators ◽  
Safety Level ◽  
Italian Market ◽  
Elasmobranch Fish ◽  
Rate Limit

This study measures total mercury (THg), methylmercury (MeHg) and selenium (Se) concentrations in elasmobranch fish from an Italian market with the aim of evaluating the risk-benefit associated with their consumption, using estimated weekly intake (EWI), permissible safety level (MeHgPSL), selenium health benefit value (HBVSe) and monthly consumption rate limit (CRmm) for each species. THg and Se were analysed by atomic absorption spectrometry, while MeHg was determined by HrGc/Ms. THg and MeHg concentrations ranged from 0.61 to 1.25 μg g−1 w.w. and from 0.57 to 0.97 μg g−1 w.w., respectively, whereas Se levels were 0.49–0.65 μg g−1 w.w. In most samples European Community limits for THg were surpassed, while for MeHg none of the fish had levels above the limit adopted by FAO/WHO. EWIs for THg and MeHg in many cases were above the provisional tolerable weekly intakes (PTWIs). MeHgPSL estimate showed that fish should contain approximately 50% of the concentration measured to avoid exceeding the PTWI. Nevertheless, the HBVSe index indicated that solely skates were safe for human consumption (HBVSe = 3.57–6.22). Our results highlight the importance of a constant monitoring of THg and MeHg level in fish, especially in apex predators, to avoid the risk of overexposure for consumers.

scholarly journals An Integrated Approach to Identify Water Resources for Human Consumption in an Area Affected by High Natural Arsenic Content

Water ◽  
2015 ◽  
Vol 7 (9) ◽  
pp. 5091-5114 ◽  
Author(s):  
Giovanna Armiento ◽  
Antonella Baiocchi ◽  
Carlo Cremisini ◽  
Cinzia Crovato ◽  
Francesca Lotti ◽  
...  
Keyword(s):  
Water Resources ◽  
Integrated Approach ◽  
Human Consumption ◽  
Arsenic Content

ASSESSMENT OF HEAVY METALS LEVELS IN SOIL AND VEGETABLES IN THE VICINITY OF UNLINED WASTE DUMPSITE IN NNEWI, ANAMBRA STATE NIGERIA

2020 ◽  
Vol 45 (4) ◽  
Author(s):  
C.C. Aralu ◽  
P.A.C. Okoye
Keyword(s):  
Heavy Metals ◽  
Risk Index ◽  
High Mobility ◽  
Control Site ◽  
Human Consumption ◽  
Residential Areas ◽  
Wet Season ◽  
Transfer Factors ◽  
Anambra State ◽  
Control Samples

Unlined waste dumpsites are known to generate pollutants in the environment where they are located. This study investigates the pollutant load of unlined dumpsite by assessing the heavy metals levels of soil and vegetables in and around the waste dumpsite. 16 samples (study samples and control) for each soil and vegetable samples (Telfairia occidentalis, Talinum triangulare and Amaranthus hydridus) were collected respectively during wet season. The levels of 10 heavy metals were analysed using Atomic Absorption Spectrophotometric method. The highest and lowest heavy metals concentrations in the study sample site for vegetables ranged from 11.5 mg/kg – 0.01 mg/kg, while 7.79 mg/kg - 0.00 mg/kg was analysed for control site. The soil heavy metals values ranged from 13.1 mg/kg – 0.28 mg/kg for study samples, while 7.45 mg/kg – 0.02 mg/kg for control site. The study samples heavy metal results for vegetables and soil were higher than the control samples, which was attributed to high mobility of metal ions as a result of its closeness to the dumpsite through leaching. The total transfer factors ranged from 3.89 – 3.01 for study samples and 3.46 – 2.75 for control samples. The study samples were higher than the control site due to high levels of soil contaminations. The vegetables samples showed high levels of heavy metals, which were above WHO/FAO limits. The risk index range of 16.015 – 14.551 for study samples, and 6.821 – 5.761 for control samples from the extrapolated vegetable results, revealed that the vegetables collected from both sites were above the critical value of 1. The vegetables are unfit for human consumption and can cause non-cancer health risks to the populace who consume them. A proper refuse disposal system in and around the residential areas should be adopted. Routine monitoring of heavy metals in such plants to prevent excessive accumulation of the metals in the food chain is also advocated.

scholarly journals Heavy metals content in Serbian old plum brandies

2013 ◽  
Vol 78 (7) ◽  
pp. 933-945 ◽  
Author(s):  
Mirjana Bonic ◽  
Vele Tesevic ◽  
Ninoslav Nikicevic ◽  
Jelena Cvejic ◽  
Slobodan Milosavljevic ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ph Value ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Atomic Spectrometry ◽  
Alcoholic Beverages ◽  
Cu Content ◽  
Lead And Cadmium ◽  
Flame Atomic Absorption ◽  
Copper Zinc

Seven elements, namely, arsenic, lead, cadmium, copper, zinc, iron and manganese were determined in 31 samples of Serbian plum brandies by applying atomic spectrometry techniques. Flame atomic absorption spectrometry was used for quantification of copper, iron, zinc, manganese, lead and cadmium; and hydride generation atomic spectrometry absorption for arsenic quantification. Measured concentrations of heavy metals and arsenic was assessed according to the Serbian regulations, official regulations of some other countries and in respect of microelements content in other similar distilled alcoholic beverages. Amounts of microelements in maximal recommended daily and weekly intake of plum brandy were determined. The influence of production (home made and industrial), type of wooden barrel (oak and mulberry), and duration of ageing process on the content of Zn, Cu, Fe and Mn in plum brandies, as well as coefficient of correlation between Cu content and pH value were also studied.

scholarly journals PARTIAL CHRONIC TOXICITY TEST OF COPPER (Cu2+), ZINC (Zn2+) and CYANIDE (Cn+) FOR YOUNG COBIA FISH (Rachycentron canadum)

2008 ◽  
Vol 33 (1) ◽  
pp. 49-53
Author(s):  
Le Quang Dung ◽  
Nguyen Duc Cu
Keyword(s):  
Heavy Metals ◽  
Growth Rate ◽  
Statistical Analysis ◽  
Chronic Toxicity ◽  
The Body ◽  
Toxicity Tests ◽  
Fish Length ◽  
Toxic Substances ◽  
Rachycentron Canadum ◽  
Copper Zinc

The partial toxicity tests of copper (Cu2+), zinc (Zn2+) and cyanide (CN-) for young cobia (Rachycentron canadum) fishes 45 days-old were conducted in Doson station during ten days (yr 2005). These three toxic substances affected strongly the growth rate of the Cobia fish (length and weight of the body), even at the lowest treated concentration. The LC50 values of copper, zinc and cyanide were 0.32 mg l-1; over mg l-1 and 0,049 mg l-1, respectively. Based on the statistical analysis of growth rate of cobia by determining 1C25, IC50, NOEC and LOEC values, we have addressed the safe concentrations of these two heavy metals and cyanide in the environmental aquaculture which must be lower than 0.025 mg Cu l-1, 0.5 mg Zn l-1 and 0.005 mg CN l-1, respectively. The result also showed that cyanide was the most toxic to Cobia, followed by copper and zinc.

scholarly journals Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger

2015 ◽  
Vol 13 (3) ◽  
pp. 191-202 ◽  
Author(s):  
Slavica Blagojevic ◽  
Stevan Blagojevic ◽  
Biljana Begovic
Keyword(s):  
Maximum Concentration ◽  
Graphite Furnace ◽  
Microwave Digestion ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Human Consumption ◽  
Arsenic Content ◽  
Mineral Contents ◽  
Green Pepper ◽  
Black Cumin

In order to evaluate the safety of selected commercial spices brands, concentration of lead, mercury and arsenic, as well as moisture and mineral contents were analyzed in samples of dried black and white pepper powders, black, white and green peppercorns, black cumin seeds and ginger powder. Lead (Pb), mercury (Hg) and arsenic (As) concentrations in spice samples purchased from local markets in Belgrade were determined, after a microwave digestion of the samples, by atomic absorption spectrometry (AAS), using the graphite furnace AAS technique (Pb), cold vapor AAS technique (Hg) and hydride generation AAS technique (As). Trace levels of Pb, Hg and As in the selected dried spices samples were in the range 0.10 ppm - 0.79 ppm, 0.01 ppm - 0.10 ppm and 0.01 ppm - 0.51 ppm, respectively. The maximum Pb concentration was determined in the sample of ginger and it was 0.79 ppm, the maximum concentration of Hg was 0.10 ppm, determined in green peppercorns samples, while the maximum concentration of As in powdered black pepper sample was 0.51 ppm. The moisture and mineral contents in the different analyzed spices were in the range 1.70-13.10% and 3.40-6.50%, respectively. According to the obtained results, the concentrations of the analyzed toxic elements, as well as the moisture and mineral content in selected spices, were below the maximum permissible limits declared by the national legislations deemed safe for human consumption.

scholarly journals Analysis and risk assessment of arsenic in the water sources of the cities Cuenca and Azogues, Ecuador

MASKANA ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 71-79
Author(s):  
Guillermina Pauta-Calle ◽  
María Velasco ◽  
Gabriela Vázquez ◽  
Andrea Abril ◽  
Santiago Torres
Keyword(s):  
Surface Water ◽  
Toxic Substance ◽  
Toxic Element ◽  
High Flow ◽  
Human Consumption ◽  
Arsenic Content ◽  
Environmental Legislation ◽  
Quality Of Water ◽  
The City

Arsenic (As) is a toxic element present in the environment posing a threat to consumers health. To identify the arsenic content in rivers, páramos, and wells in the city of Cuenca, and in rivers in the city of Azogues, two monitoring campaigns in the period August-November 2017 were conducted, respectively during a low and high flow hydrological period. The measurements encompassed physicochemical quality indicators such as pH, color, turbidity, and conductivity. Results show that the páramos and wells are free of As, while this toxic substance is present in surface water with higher levels in periods of high flow. A significant association between the concentration of As and the pH of river water was found. The risk of chronic toxicity from consumption is almost non-existent because the observed As levels exceed only exceptionally the permissible limit established by the Ecuadorian TULSMA (Unified Text of Secondary Environmental Legislation) regulation. The presence of As in surface water is the result of anthropological activities such as the use of pesticides. A permanent monitoring of the quality of water resources for human consumption is necessary, particularly in the rainy season, due to the diffuse and difficult to control pollution processes.

scholarly journals Comparison of Zinc, Copper and Selenium Content in Raw, Smoked and Pickled Freshwater Fish

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3771
Author(s):  
Konrad Mielcarek ◽  
Anna Puścion-Jakubik ◽  
Krystyna J. Gromkowska-Kępka ◽  
Jolanta Soroczyńska ◽  
Elżbieta Karpińska ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Absorption Spectrometry ◽  
Human Consumption ◽  
European Eel ◽  
Analysis Model ◽  
Fish Products ◽  
Cu Content ◽  
Smoked Fish ◽  
Zn Content ◽  
Fish Product

The aim of the study was to assess the zinc (Zn), copper (Cu) and selenium (Se) content in freshwater fish from Poland. Selected species of raw, smoked and pickled fish were evaluated by atomic absorption spectrometry (AAS). The concentration of Zn, Cu and Se in the examined fish ranged from 1.5 to 49.9 mg/kg, 0.01 to 2.8 mg/kg and 30.9 to 728.2 µg/kg, respectively. One serving of every fish product covered the recommended dietary allowance (RDA) of Zn by 5.38–65.0%, of Cu by 0.42–11.4% and of Se by 12.3–198.6%. A cluster analysis allowed us to distinguish European eel (raw and smoked) based on the Zn content. Additionally, based on the Cu and Se content, pickled common whitefish was differentiated from other species and types of fish products. The discriminant analysis model of smoked fish enabled their classification with a 70% accuracy. Regarding Zn, all forms of the European eel as well as raw and smoked vendace can be considered a source of this element. None of the tested fish can be considered a source of Cu. All products are safe for human consumption with regard to the Zn and Cu content. Almost each form of every species of fish can be considered a source of Se. However, the Se content should be monitored in smoked and pickled common whitefish, pickled bream and pickled vendace.

scholarly journals Assessment of the Quality of Water Treated and Distributed By the Akwa Ibom State Water Company

2007 ◽  
Vol 4 (2) ◽  
pp. 180-186
Author(s):  
N. O. Eddy ◽  
A. S. Ekop
Keyword(s):  
Major Ions ◽  
World Health ◽  
Human Consumption ◽  
Physiochemical Parameters ◽  
Water Company ◽  
Quality Of Water ◽  
State Water ◽  
Standard Values ◽  
Health Organization

The quality of water treated and distributed by the Akwa Ibom Water Company has been assessed by analyzing samples of water collected from different distribution points for their physiochemical parameters, major ions, nutrients and bacteriological quality. The observed values were compared with standard values given by the World Health Organization for portable water. The quality of the analysed water is found fit for human consumption.

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