Accumulation of heavy metals (Fe, Zn, Cu, Mn, Cd and Pb) in mullets Planiliza subviridis (Valenciennes, 1836) and Ellochelon vaigiensis(Quoy & Gaimard, 1825) from Damb Harbor, Balochistan, Pakistan

2020 ◽  
Vol 49 (2) ◽  
pp. 140-146
Author(s):  
Quratulan Ahmed ◽  
Semra Benzer ◽  
Qadeer M. Ali ◽  
A. Buksh Baloch
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Fish Species ◽  
Dry Weight ◽  
Southwest Monsoon ◽  
Northeast Monsoon ◽  
Limit Value ◽  
Copper Manganese ◽  
Pb Accumulation ◽  
Cadmium And Lead

AbstractIn this study, muscle samples collected from Planiliza subviridis (Valenciennes, 1836) and Ellochelon vaigiensis (Quoy & Gaimard, 1825) caught on the Balochistan coast (Damb Harbor) between January and December 2015 (during the northeast monsoon, post-monsoon and pre-monsoon seasons, and the southwest monsoon) were analyzed to determine concentrations of heavy metals: iron, zinc, copper, manganese, cadmium and lead by an atomic absorption spectrophotometer, expressed per unit of dry weight of each sample. The average measured level of Fe, Zn, Cu, Mn, Cd and Pb for P. subviridis was 26.70 ± 11.49 μg g−1, 13.82 ± 4.56 μg g−1, 1.66 ± 0.84 μg g−1, 0.24 ± 0.10 μg g−1, 0.06 ± 0.07 μg g−1 and 0.17 ± 0.14 μg g−1, respectively. The average level of the same metals for E. vaigiensis was 29.26 ± 10.18 μg g−1, 18.85 ± 6.28 μg g−1, 2.18 ± 1.01 μg g−1, 0.32 ± 0.14 μg g−1, 0.25 ± 0.11 μg g−1 and 0.30 ± 0.12 μg g−1, respectively. The highest Pb accumulation (0.56 μg g−1 and 0.61 μg g−1) detected in P. subviridis and E. vaigiensis is above the limit value (0.50 μg g−1) reported by FAO, hence the accumulation of Pb in these two fish species should be monitored in the future.

scholarly journals Bioaccumulation of Some Heavy Metals in Ayre Fish (Sperata Aor Hamilton, 1822), Sediment and Water of Dhaleshwari River in Dry Season

2012 ◽  
Vol 40 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Abu Tweb Abu Ahmed ◽  
Suman Mandal ◽  
Didarul Alam Chowdhury ◽  
Abu Rayhan M Tareq ◽  
M Mizanur Rahman
Keyword(s):  
Heavy Metals ◽  
Nitric Acid ◽  
Atomic Absorption ◽  
Water Samples ◽  
Dry Weight ◽  
Acid Digestion ◽  
Fish Organs ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Nitric Acid Digestion

The present study was carried out to determine the level of bioaccumulation of some heavy metals in a freshwater fish Ayre (Sperata aor Hamilton, 1822) collected from Rajfulbaria (23°48?56.36? N and 90°14?54.04? E) of  Dhaleshwari river. Four heavy metals, namely chromium (Cr), copper (Cu), lead (Pb), and cadmium (Cd) were selected for this study. Metal concentrations were   determined by Flame Atomic Absorption Spectrophotometer after nitric acid  digestion of samples. The concentrations of accumulated heavy metals in fish were  also compared with the concentrations of metals in the sediments and waters of  that river. The level of bioaccumulations in different organs of S. aor were determined separately and compared among them. Average bioaccumulation levels  in S. aor were Cr: 1.458 mg/kg, Cu: 31.500 mg/kg, Pb: 18.776 mg/kg and Cd:  0.487 mg/kg of dry weight. The levels of heavy metals in sediments were Cr: 27.393 mg/kg, Cu: 37.450 mg/kg, Pb: 15.797 mg/kg and Cd: 2.083 mg/kg, and in water were Cr: 0.130 ppm, Cu: 0.000 ppm, Pb: 0.201 ppm and Cd: 0.001 ppm.The bioaccumulation of these four heavy metals in fish organs, sediment and  water samples were also compared with FAO approved standard levels and other  related studies, and found that the levels of bioaccumulation in the Dhaleshwari river exceeded all the standard levels. DOI: http://dx.doi.org/10.3329/bjz.v40i1.12904 Bangladesh J. Zool. 40(1):147-153, 2012

scholarly journals Levels of Heavy Metals in Popular Cigarette Brands and Exposure to These Metals via Smoking

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Muhammad Waqar Ashraf
Keyword(s):  
Heavy Metals ◽  
Saudi Arabia ◽  
Atomic Absorption Spectrometry ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Dry Weight ◽  
International Studies ◽  
Graphite Furnace Atomic Absorption ◽  
Average Quantity ◽  
Cadmium And Lead

The levels of selected heavy metals in popular cigarette brands sold and/or produced in Saudi Arabia were determined by graphite furnace-atomic absorption spectrometry (GFAAS). Average concentrations of Cadmium and Lead in different cigarette brands were 1.81 and 2.46 μg g−1(dry weight), respectively. The results obtained in this study estimate the average quantity of Cd inhaled from smoking one packet of 20 cigarettes to be in the range of 0.22–0.78 μg. Results suggest that the quantity of Pb inhaled of smoking one packet of 20 cigarettes is estimated to be 0.97–2.64 μg. The concentrations of Cd and Pb in cigarettes were significantly different between cigarette brands tested. The results of the present study were compared with those of other regional and international studies.

scholarly journals Cuantificación de metales pesados en Anadara tuberculosa(Mollusca:bivalvia) del estero Huaylá de Puerto Bolívar, por espectrofotometría de absorción atómica. // Quantification of heavy metals in Anadara tuberculosa, (Mollusca: bivalvia) from the Huaylá estuary of Puerto Bolívar, by atomic absorption spectrophotometry.

Ciencia Unemi ◽  
2017 ◽  
Vol 10 (24) ◽  
pp. 1
Author(s):  
Nancy Yadira Collaguazo ◽  
Humberto Ayala Armijos ◽  
Geanina Machuca Loja
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Atomic Absorption Spectrophotometry ◽  
Bivalve Molluscs ◽  
Absorption Spectrophotometry ◽  
Commercial Importance ◽  
Permissible Limits ◽  
Limit Value

La presencia de metales pesados en moluscos bivalvos implica un grave problema para la salud de los consumidores de este tipo de alimento. Por ello, el objetivo de la investigación fue determinar la presencia de metales pesados enAnadara tuberculosa, moluscode importancia comercial en Puerto Bolívar, Ecuador. El método utilizado para cuantificar la concentración de metales pesados fue la  espectrofotometría de absorción atómica, se  determinó  la concentración de seis metales: Plomo (Pb), Arsénico (As), Mercurio (Hg), Cadmio (Cd), Cromo (Cr) y Cobalto (Co). Los valores promedios obtenidos, expresados en mg.kg-1 fueron: Pb (7,52 ± 0,46); As (1,55 ± 0,14); Hg (364,38 ± 91, 39); Cd (1,68 ± 0,28); Cr (3,89 ± 1,82) y Co (2,71 ± 0,34 en Anadara tuberculosa. Los resultados muestran que  el  Pb, As, Cd, y Hg superan  los límites máximos permisibles,  el Mercurio supera en más de 100 veces el valor límite. La talla más pequeña (3-4 cm) del molusco en estudio posee la capacidad de bioacumular mayor concentración de Pb, Cd y  Cr.ABSTRACTThe presence of heavy metals in bivalve molluscs implies a serious problem for the consumers health of this type of food. Therefore, the objective of the present investigation was to determine the presence of heavy metals in Anadara tuberculosa, mollusc of commercial importance at Puerto Bolívar, Ecuador. Atomic absorption spectrophotometry was the method used to quantify the concentration of heavy metals. The concentration of six metals was determined: lead (Pb), arsenic (As), mercury (Hg), cadmium (Cd), chromium (Cr) and cobalt (Co). The average values obtained, expressed in mg.kg-1 were: Pb (7.52 ± 0.46); As (1.55 ± 0.14); Hg (364.38 ± 91.39); Cd (1.68 ± 0.28); Cr (3,89 ± 1,82) and Co (2,71 ± 0,34 in A. tuberculosa The results show that Pb, As, Cd, and Hg exceed the maximum permissible limits, mercury exceeds by more than 100 times the limit value. The smaller size (3-4 cm) studied mollusc, has the capacity to bioaccumulate higher concentration of Pb, Cd and Cr.   

scholarly journals Heavy Metal Concentration in Eight Fish Species from Epe Lagoon (Nigeria)

2019 ◽  
Vol 21 (1) ◽  
pp. 69-82
Author(s):  
Iyabode Olusola Taiwo ◽  
Olaniyi Alaba Olopade ◽  
Nathanael Akinsafe Bamidele
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Concentration ◽  
Fish Species ◽  
Heavy Metal Concentration ◽  
Atomic Absorption Spectrophotometry ◽  
Human Consumption ◽  
Heavy Metal Concentrations ◽  
Absorption Spectrophotometry

Abstract This research was undertaken to find out the levels of five heavy metals (Cu, Fe, Mn, Pb, and Zn) in the muscles of eight fish species from Epe Lagoon. The levels of heavy metals were determined by atomic absorption spectrophotometry after digestion of the samples using Kjldahl heating digester. The heavy metal concentrations among the fish species were statistically dissimilar (P < 0.5). The heavy metals of Pb, Fe, and Mn were above the FAO/WHO agreeable limits for human consumption.

scholarly journals Pollution Problem in River Kabul: Accumulation Estimates of Heavy Metals in Native Fish Species

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Habib Ahmad ◽  
Ali Muhammad Yousafzai ◽  
Muhammad Siraj ◽  
Rashid Ahmad ◽  
Israr Ahmad ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fish Species ◽  
Fish Population ◽  
Native Fish ◽  
Nickel Copper ◽  
Wallago Attu ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium And Lead ◽  
River Kabul

The contamination of aquatic systems with heavy metals is affecting the fish population and hence results in a decline of productivity rate. River Kabul is a transcountry river originating at Paghman province in Afghanistan and inters in Khyber Pakhtunkhwa province of Pakistan and it is the major source of irrigation and more than 54 fish species have been reported in the river. Present study aimed at the estimation of heavy metals load in the fish living in River Kabul. Heavy metals including chromium, nickel, copper, zinc, cadmium, and lead were determined through atomic absorption spectrophotometer after tissue digestion by adopting standard procedures. Concentrations of these metals were recorded in muscles and liver of five native fish species, namely,Wallago attu,Aorichthys seenghala,Cyprinus carpio,Labeo dyocheilus, andOmpok bimaculatus. The concentrations of chromium, nickel, copper, zinc, and lead were higher in both of the tissues, whereas the concentration of cadmium was comparatively low. However, the concentration of metals was exceeding the RDA (Recommended Dietary Allowance of USA) limits. Hence, continuous fish consumption may create health problems for the consumers. The results of the present study are alarming and suggest implementing environmental laws and initiation of a biomonitoring program of the river.

scholarly journals Effects of cadmium and lead concentrations and arbuscular mycorrhiza on growth, flowering and heavy metal accumulation in scarlet sage (Salvia splendens sello 'torreador')

2012 ◽  
Vol 60 (1) ◽  
pp. 79-83 ◽  
Author(s):  
Joanna Nowak
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Accumulation ◽  
Mycorrhizal Colonization ◽  
Salvia Splendens ◽  
Pb Accumulation ◽  
Negative Effect ◽  
Mycorrhizal Plants ◽  
Cadmium And Lead

The objective of this research was to examine the influence of Cd (0, 10, 20, 40 mg Cd·dm<sup>-3</sup>) and Pb (0, 10, 100, 200 mg Pb·dm<sup>-3</sup>) in growing substrate and mycorrhizal colonization of root system on growth, flowering, Cd and Pb accumulation in scarlet sage shoots. Both Cd and Pb had a negative effect on mycorrhizal colonization of scarlet sage roots. The effect of Cd and Pb on the growth of scarlet sage was negligible. Cd at 40 mg·dm<sup>-3</sup> lowered the number of inflorescences and caused slight chlorosis of the lowermost leaves. Pb at 200 mg·dm<sup>-3</sup> caused drying of the lowermost leaves. Both heavy metals accelerated flowering of non-mycorrhizal plants, independently of the concentration in growing media. Cd and Pb contents in scarlet sage shoots increased with the increasing content of these heavy metals in growing substrate in both non-mycorrhizal and mycorrhizal plants. Mycorrhization decreased the growth of scarlet sage and increased the accumulation of Cd and Pb in shoots of plants grown in media strongly polluted with heavy metals.

scholarly journals Determination of heavy metals in sunflower seeds by atomic absorption spectroscopy based on fractional mineralization

2018 ◽  
Vol 80 (3) ◽  
pp. 164-169
Author(s):  
Yu. A. Demchenko ◽  
A. D. Tsikunib
Keyword(s):  
Heavy Metals ◽  
Sample Preparation ◽  
Atomic Absorption ◽  
Raw Materials ◽  
Test Methods ◽  
Maximum Temperature ◽  
Sunflower Seeds ◽  
Actual Problem ◽  
Cadmium And Lead

The actual problem of food chemistry is the contamination of food raw materials and food products with heavy metals. Modern physico-chemical methods for the quantification of heavy metals are highly accurate and allow even trace amounts of elements to be determined, but the complexity of the sample preparation procedure is one of the most time-consuming steps, requiring high costs of reagents and time, especially for analysis of fat-containing samples. In this regard, development of new ways of determination of content of heavy metals in olive raw materials is relevant. Sunflower seeds in which they established the maintenance of toxic elements with use of different ways of sample preparation have acted as an object of a research: dry combustion and a wet mineralization and the developed new way of a fractional mineralization which distinctive features are: preliminary decomposition of test on fatty (oil) and fat-free (oilcake) of fraction with their independent mineralization. Oilcake is exposed to combustion at the maximum temperature 400 ?С for two full cycles, with convertion of the mineralizat in background solution and definition of metals by AAS-ETA method, oil – is dissolved in bipolar solvent in the ratio 1:6:2 from the mass of oil, with the subsequent direct input of mix in an analytical cell of the graphite tubular furnace of an electrothermal atomizer where there is a mineralization and simultaneous atomization of test. The use of fractional mineralization makes it possible to improve the metrological characteristics of the atomic absorption method of sunflower seeds: to increase the average openability of the investigated elements to 90.8%, to reduce the error of convergence (by 4.5%) and the reproducibility (by 4.9%) of the results of the study of cadmium and lead, and also to reduce the total time of sample preparation for 4–6 hours as compared with the test methods.

SPATIAL AND TEMPORAL DISTRIBUTION OF BACTERIAL COMMUNITIES AND HEAVY METALS (CR, CD AND PB) COMPOSITION IN SEDIMENTS ALONG PAHANG RIVER, MALAYSIA

2015 ◽  
Vol 77 (24) ◽  
Author(s):  
Mohd Huzaimi Mohd Amin ◽  
Ahmed Jalal Khan Chowdhury ◽  
Kamaruzzaman Yunus ◽  
Noor Faizul Hadry Nordin
Keyword(s):  
Heavy Metals ◽  
Bacterial Communities ◽  
Monsoon Season ◽  
Temporal Distribution ◽  
Dry Weight ◽  
Bacterial Colony ◽  
Nutrient Contents ◽  
North East ◽  
Colony Number ◽  
Cadmium And Lead

Bacterial communities show complex and sensitive response towards the environmental stimulation. Pahang River is one of the important inland aquatic biodiversity resources that provide food and excellent habitat for many organisms including microorganisms. Higher bacterial diversity is assumed to increase ecosystem capacity to resist and recover from perturbation. Hence, it is important to assess the impacts of heavy metals composition towards distribution of bacteria in sediments along Pahang River. A study on heavy metals composition such as chromium, cadmium and lead was carried out along the Pahang River using Teflon Bomb digestion processes and were analyzed using ICP-MS. Overall 19 sampling areas along Pahang River with frequency of 20-30 km for each site were chosen as our sampling stations. Sampling was conducted during pre and post of North-East monsoon season. The average dry weight concentration for chromium (Cr) was found between 3.250 and 21.950 µg/g, cadmium (Cd) ranged from 0.019 to 0.403 µg/g and lead (Pb) 8.024 to 20.660 µg/g. The bacterial community in sediments along Pahang River was determined using culture-based method. The bacterial colony-forming unit (CFU) range was found between 1013.33 CFU/g and 28826.67 CFU/g. This study demonstrated that the concentration of heavy metals and bacterial colony number different at each station during pre and post-monsoon. Apart from that, the heavy metals composition can influence the changes of bacterial colony number. However this changes also influence by other factors such as physicochemical parameters, sediments size, nutrient contents in the river and also sediments and water run-off. The condition of Pahang River is still conducive and activities that causing pollution should be stopped.

scholarly journals The association of heavy metals concentration in air and health risk assessment in Paka, Malaysia

2019 ◽  
Vol 15 (2-1) ◽  
pp. 346-349
Author(s):  
Siti Noor Syuhada Muhammad Amin ◽  
Azman Azid ◽  
Saiful Iskandar Khalit ◽  
Mohd Saiful Samsudin ◽  
Ku Mohd Kalkausar Ku Yusof
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Inductively Coupled Plasma ◽  
Human Health Risk ◽  
Industrial Area ◽  
Southwest Monsoon ◽  
Northeast Monsoon ◽  
Safe Level

Heavy metals are classified as the materials that have density five times higher than water. They can be spread in the world through air, water and other routes. In this study, it was focused on heavy metals in air. Paka has be choosen in this study as it is the industrial estate that contributed to air pollution. The aim of this study was to determine an association between heavy metals concentration in air and health risk assessment in Paka, Malaysia. Eight points were selected for this study within two monsoon seasons. The sampling for southwest monsoon was done in August and September 2017 while for northeast monsoon was done in December 2017 and February 2018. The samples were digested by using aqua regia method. The concentration of heavy metals was analysed by using inductively coupled plasma mass spectrometry (ICPMS). For southwest monsoon, the results showed that the concentration of Fe was the highest with the value of mean ±SD (0.272 mg/Kg ± 0.103) and the lowest mean concentration was recorded for Cu with the value of 0.002 mg/Kg ± 0.001. For northeast monsoon, Fe was recorded the highest concentration of heavy metals and As was the lowest with the value 0.125 mg/Kg ± 0.041 and 0.002 mg/Kg ± 0.001, respectively. The health risk assessment indicated no risks from these metals as the HQs and HIs of six metals were almost all lower than the safe level (=1) for the industrial workers. The HI values were decreased in the order of Fe>Cd>Pb>As>Zn>Cu. Fe and Cd showed higher values close to safe level, while Zn and Cu were lowest. It could be concluded that the industrial emission was the major source of heavy metals in the atmosphere along Paka industrial area. The human health risk assessment has proved to be a powerful tool to distinguish heavy metals and exposure routes of most concerns in urban environments to estimate the risk of mix metal contaminates.

scholarly journals Determination of HeaDetermination of Some Heavy Metals in Three Fish Species from Duhok City Markets in Kurdistan of Iraq

2019 ◽  
Vol 7 (4) ◽  
pp. 152-157
Author(s):  
Shahyan S. Ahmed ◽  
Mahmood A. Hasan
Keyword(s):  
Heavy Metals ◽  
Fish Species ◽  
Inductively Coupled Plasma ◽  
Winter Season ◽  
Dry Weight ◽  
International Standards ◽  
Emission Spectrometry ◽  
Commercial Fish ◽  
Mean Values ◽  
Permissible Limits

In this study, the concentrations of some heavy metals including Al, Cu, Fe, Mn, Zn, Cd, Co, Cr, Ni and Pb were determined in the muscles of three commercial fish species available in Duhok city markets in two seasons, using inductively coupled plasma-optical emission spectrometry (ICP-OES), after the wet digestion process. Lowest and highest mean values of metals in µg/g (dry weight) were as follows: Al: Under Detection Limit (UDL)-3.71, Cu: UDL-4.00, Fe: 5.40-21.44, Mn: UDL-3.45, Zn: 13.38-140.11, while Cd, Co, Cr, Ni, and Pb were not detected. The highest levels of Al, Fe and Zn were recorded in Shukhat fish species, and the highest levels of Cu and Mn were recorded in Shabout in the winter season. The highest level of all metals was recorded for Zn (172.8 µg/g) with the highest mean value of (140.11 µg/g) in Shukhat species during winter.  Most heavy metal concentrations were below the international permissible limits for fish, however, some of the maximum and mean values of metals were above the international standards. Fe concentrations were above the maximum allowable limits set by WHO (1999). Zn concentrations were above the maximum permissible limits set by joint FAO/WHO (1989) and FAO (2012).

Sign in / Sign up

Export Citation Format

Share Document