Radiotoxic metals concentration measurement in sediments due to gold mining activities, Chalkidiki.

The mining operation and tailing deposits in Stratoni region, Northern part of Greece, make monitoring activities necessary both in the terrestrial and coastal areas. As a part of a preliminary monitoring action, in summer of 2012, surface sediment samples in the coastal area of Stratoni (in Ierissos Gulf) were collected and measured aiming a) to obtain concentration levels of (Natural Occurring Radioactive Materials) NORM and heavy metals (e.g. As, Zn, Cu, Pb and Mn,), b) to identify minerals composition and c) to determine the distribution of the grain size. The activity concentrations of 238U, 232Th daughters and 40K were found between (20-100) Bq/kg, (20-35) Bq/kg and (420-700) Bq/kg, respectively. The concentrations of the most toxic heavy metals were found, (8-4100) ppm for As, (30-4000) ppm for Zn, (7-200) ppm for Cu, (40-1700) ppm for Pb and (400-26000) ppm for Mn. In addition, granulometric analysis reveals mostly sandy and sandy-mud sediments (97 – 53% content of sand). In general, enhanced levels of heavy metals and radionuclides were located near the load-out pier area of the coastal region. So, the input mechanisms of them (via local streams, rainfall, floods or others) into the sea and their levels has to be periodically investigated through more concerted monitoring actions.

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Study of Naturally Occurring Radioactive Materials and Some Heavy Metals from Intake of Some Nuts and Seeds in South-Western, Nigeria

Physical Science International Journal ◽

10.9734/psij/2020/v24i630195 ◽

2020 ◽

pp. 15-23

Author(s):

Augustine Kolapo Ademola ◽

Ruth Omoseeke Morakinyo

Keyword(s):

Heavy Metals ◽

Inductively Coupled Plasma ◽

Toxic Heavy Metals ◽

High Concentration ◽

Hazard Indices ◽

Radioactive Materials ◽

Mean Values ◽

Inductively Coupled ◽

Naturally Occurring ◽

The Mean

The concentration of NORMs and some toxic heavy metals in some nuts and seeds commonly consumed in the south-western states of Nigeria were investigated. The analysis was done with NaI(TI) spectrometry and Inductively Coupled Plasma (ICP) respectively. The concentration of 226Ra, 232Th, and 40K in the samples was found to be below the world average. The mean values are 6.6±1.8, 3.6±1.0 and 98.2±13.5 Bq/kg, in nuts and 8.4±2.6, 2.6±1.3 and 97.6±15.0 Bq/kg in seeds respectively. The effective dose in nuts was calculated to be 13.99 and 12.0 µSv in seeds. The fatal and hereditary cancer risk estimated from the consumption of the nuts and seeds are lower than 1.0 x 10-6 which is the lowest limit. Concentration of metals in the samples descend as Fe > Zn > Cu > Cr. The Hazard Indices of heavy metals are lower than 1 except for in Cocoa which is higher than 1 due to the high concentration of Cu and Fe. Therefore, the nuts and seeds analyzed in this study are contaminated with Cu and Fe and so must be taken with care so that consumers will not be exposed to excessive concentration of these metals which may have undesirable effects.

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Removal of copper and zinc from plating wastewater by megnatic separation method

Science and Technology Development Journal - Natural Sciences ◽

10.32508/stdjns.v1it3.465 ◽

2017 ◽

Vol 1 (T3) ◽

pp. 47-54

Author(s):

Thuy Thi Xuan Le ◽

Quyen Hong Ho ◽

Mai Thi Sao Nguyen

Keyword(s):

Heavy Metals ◽

Mining Operation ◽

Toxic Heavy Metals ◽

Efficient Removal ◽

New Methods ◽

Metal Plating ◽

Metals Removal ◽

Water And Wastewater ◽

Cu And Zn ◽

Plating Wastewater

Copper (Cu) and Zinc (Zn) are two popular heavy metals using in the mining operation, metallurgic industry, metal plating facilities, etc., and their effecs on the environment and human health are quite seriously. Application of a new adsorbent γ-PGM (-poly glutamic acid coated magnetite) is one of the new methods to separate toxic heavy metals Cu and Zn from water and wastewater. This study showed that 0.2 g/L γ-PGM at pH 6 with the shaking speed 200 rpm in 10 minutes were the best conditions for removal of Cu and Zn. The efficient removal of Cu and Zn was 99.91 % and 99.75 %, respectively. Besides, regeneration the ability of γ-PGM particles reached to 12 times while using hydrochloric acid HCl 0.1 N for 1 hour for desorption of the materials which is the best optimal conditions for separating Cu2 + and Zn2 + ions from the surface of γ-PGM particles. The results indicated that γ-PGM was the potential material for the application to the heavy metals removal in water and wastewater with various outstanding characteristics.

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ASSESSMENT OF HEAVY METAL CONCENTRATION IN COCONUT WATER

Recent Research in Science and Technology ◽

10.25081/rrst.2018.10.3370 ◽

1970 ◽

pp. 07-10

Author(s):

MdDidarul Islam, Ashiqur Rahaman, Aboni Afrose

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Heavy Metal Concentration ◽

Coconut Water ◽

Toxic Heavy Metals ◽

High Concentration ◽

Toxic Heavy Metal ◽

Low Concentration ◽

Wet Ashing ◽

Aas Method

This study was based on determining concentration of essential and toxic heavy metal in coconut water available at a local Hazaribagh area in Dhaka, Bangladesh. All essential minerals, if present in the drinking water at high concentration or very low concentration, it has negative actions. In this study, fifteen samples and eight heavy metals were analyzed by Atomic Absorption Spectroscopy (AAS) method which was followed by wet ashing digestion method. The concentration obtained in mg/l were in the range of 0.3 to 1.5, 7.77 to 21.2, 0 to 0.71, 0 to 0.9, 0 to 0.2, 0.9 to 17.3, 0.1 to 0.9, 0 to 0.9 and 0 to 0.7 for Fe, Ni, Cu, Cd, Cr, Zn, Pb and Se respectively. From this data it was concluded that any toxic heavy metals like Cd, Cr, Pb and Ni exceed their toxicity level and some essential nutrients were in low concentration in those samples.

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Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh.

Journal of Scientific Agriculture ◽

10.25081/jsa.2017.v1.825 ◽

2017 ◽

Vol 1 ◽

pp. 264

Author(s):

Md Didarul Islam ◽

Ashiqur Rahaman ◽

Fahmida Jannat

Keyword(s):

Heavy Metals ◽

Adverse Effect ◽

The Other ◽

Nutrient Level ◽

Dhaka City ◽

Toxic Heavy Metals ◽

High Concentration ◽

Low Concentration ◽

Feed Formulation ◽

Macro Nutrients

This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of the ecosystem. In this study six brand samples (starter, grower, finisher and layer) which was collected from different renowned chicken feed formulation industry in Bangladesh. Those samples were prepared for analysis by wet ashing and then metals were determined by Atomic Absorption Spectroscopy. It was found that 27.7 to 68.4, 57.3 to 121.9, 0.21 to 4.1, 0.32 to 2.1, 0.11 to 1.58, 0.28 to 2.11 and 0.28 to 1.78 for zinc, iron, copper, mercury, cadmium, nickel and cobalt respectively. It was found that essential macro and micro nutrients were present in the feed in low concentration on the other side mercury was present in high concentration in the feed samples.

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Determination of Traces Heavy Metals from Solid Residues Formed by Combustion of Lignite in Relation to Degree of Accessibility in Soil and Plants

Revista de Chimie ◽

10.37358/rc.17.10.5886 ◽

2017 ◽

Vol 68 (10) ◽

pp. 2363-2366

Author(s):

Delia Nica Badea

Keyword(s):

Heavy Metals ◽

Power Plant ◽

Thermal Power ◽

Reference Value ◽

Combustion Products ◽

Toxic Heavy Metals ◽

Area Of Influence ◽

Risk Potential

The paper evaluates the presence and content of traces of heavy metals Hg, Pb, Ni, Cd (total forms) from coal and solid combustion products, the degree of transfer and accessibility in the area of influence of a lignite power plant. The content of toxic heavy metals in residues are characterized by RE Meiji [ 1 (Pb and Hg) and REMeij �1 (Ni and Cd) for the filter ash. Pb and Ni content in the soil exceeds normal values, and Pb exceeds and alert value for sensitive soils around the residue deposit (70.20 mg.Kg-1). The degree of accessibility of the metals in plants (TF), reported at the Khan reference value (0.5), indicates a significant bioaccumulation level for the metals: Cd (1.9) and Hg (0.6) inside the deposit; Cd (0.39) at the base of the deposit, Hg (0.8) in the area of the thermal power plant. The trace levels of heavy metals analyzed by GFAAS and CVAAS (Hg), indicates a moderate risk potential for food safety and quality of life in the studied area.

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Effect of Wastewater on the Soil and Irrigation Process: A Laboratory Study

10.21523/gcj5.17010105 ◽

2017 ◽

Vol 1 (1) ◽

pp. 46-55 ◽

Cited By ~ 1

Author(s):

Athar Hussain ◽

Manjeeta Priyadarshi ◽

Saif Said ◽

Suraj Negi

Keyword(s):

Heavy Metals ◽

Tap Water ◽

Sewage Treatment ◽

Daily Intake ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Treated Wastewater ◽

Surface Water Resources ◽

Industrial Sewage ◽

Concentration Levels

Most of the industrial sewage effluents used for irrigation contains heavy metals which cause toxicity to crop plants as the soils are able to accumulate heavy metal for many years. The vegetables grown for the present study were irrigated with treated wastewater brought from a nearby full-scale sewage treatment plant at different compositions along with tap water as a control. The concentration levels of the Cd, Co, Cu, Mn and Zn in the soil were found to below the toxic limits as prescribed in literature. Daily Intake Metals (DIM) values suggest that the consumption of plants grown in treated wastewater and tap water is nearly free of risks, as the dietary intake limits of Cu, Fe, Zn and Mn. The Enrichment Factor for the treated wastewater irrigated soil was found in order Zn> Ni> Pb> Cr> Cu> Co> Mn> Cd. Thus, treated wastewater can be effectively used for irrigation. This will have twofold significant environmental advantages: (1) helpful to reduce the groundwater usage for irrigation and (2) helpful to reduce the stress on surface water resources.

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Metal-induced oxidative stress level in patients with fibromyalgia syndrome and its contribution to the severity of the disease: A correlational study

Journal of Back and Musculoskeletal Rehabilitation ◽

10.3233/bmr-200102 ◽

2020 ◽

pp. 1-8

Author(s):

Varsha Shukla ◽

Siddharth Kumar Das ◽

Abbas Ali Mahdi ◽

Shweta Agarwal ◽

Ragini Alok ◽

...

Keyword(s):

Oxidative Stress ◽

Heavy Metals ◽

Fibromyalgia Syndrome ◽

Positive Association ◽

Protein Carbonyl ◽

Essential Metals ◽

Toxic Heavy Metals ◽

Essential Trace Elements ◽

Rheumatological Disease ◽

Severity Of The Disease

BACKGROUND: Fibromyalgia syndrome (FMS) is an extra-articular rheumatological disease characterised by widespread chronic musculoskeletal pain. Metal-induced oxidative stress contributes to the severity of FMS. AIMS: First, this study evaluated the association between plasma levels of toxic heavy metals and essential metals with oxidative stress (OS) markers. Second, the OS markers and metal contents were correlated with the disease severity by assessing the Fibromyalgia Impact Questioner Revised (FIQR) and tender points (TP). METHOD: A total of 105 FMS patients and 105 healthy controls of similar age and sex were recruited. OS parameter such as lipid peroxidation (LPO), protein carbonyl group (PCG), nitric oxide (NO) and essential metals such as zinc (Zn), magnesium (Mg), manganese (Mn), copper (Cu) and toxic heavy metals such as aluminium (Al), arsenic (As), lead (Pb) were estimated. RESULTS: Levels of LPO, PCG, NO (p< 0.001) and Cu, Mn, and Al (p< 0.001), were significantly higher, and Mg (p< 0.001) and Zn (p< 0.001) were significantly lower in patients compared to controls. A positive association was observed between OS parameters, FIQR and TP with Cu, Al and Mn. A significant negative association was observed between Zn and Mg with FIQR, TP and OS parameters. CONCLUSION: Heavy metals such as Al induce OS parameters and decrease the levels of essential trace elements such as Mg and Zn, which may be responsible for the severity of FMS.

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