scholarly journals Occurrence, physiologic effects, and toxicity of heavy metals--arsenic, cadmium, lead, mercury, and zinc--in marine biota: an annotated literature collection.

1976 ◽  
Vol 18 ◽  
pp. 181-217 ◽  
Author(s):  
L S Corrill ◽  
J E Huff
Keyword(s):  
Heavy Metals ◽  
Marine Biota ◽  
Cadmium Lead

INFLUENCE OF THE ECOLOGICAL STATE OF THE SEREPOK RIVER (VIETNAM) ON ACCUMULATION OF HEAVY METALS IN ORGANS OF FISH

2017 ◽  
pp. 98-105
Author(s):  
Ngo The Cuong ◽  
Tran Hoan Quoc ◽  
Svetlana Vasilievna Zolotokopova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
River Water ◽  
Bottom Sediments ◽  
Heavy Metal Concentration ◽  
Industrial Areas ◽  
Industrial Regions ◽  
Cadmium Lead ◽  
Sarotherodon Galilaeus ◽  
Water Bottom

The article focuses on the study of change of containing heavy metals (zinc, copper, iron, cadmium, lead, arsenic) in the abiotic and biotic components of the Serepok river (Vietman) influenced by wastewater discharge from industrial areas. Heavy metal content was determined in the river water and bottom sediments in the four zones: above and within the boundaries of industrial regions Xoa Phu and Tam Thang and in two water reservoirs situated below the boundaries of those industrial areas. Tilapia Galilean ( Sarotherodon galilaeus ), Hemibagrus ( Hemibagrus ), and sazan ( Cyprinus carpio ) caught in these areas were the hydrobionts under study in which liver, gills, skeleton and muscles accumulation of heavy metals was detected. In the organs of fish caught in the river within industrial region, heavy metals concentration was 3-7 times higher. The greatest concentration of heavy metals was found in the liver and gills of fish caught in the boundaries of industrial regions, the least concentration was in the muscles. In most cases, significant correlation between heavy metal concentration in organs of fishes and in river water, bottom sediments has been revealed.

scholarly journals Physiological Response of Thallasia hemprichii on Antrophogenic Pressure In Pari Island, Seribu Islands, DKI Jakarta

2017 ◽  
Vol 22 (1) ◽  
pp. 40 ◽  
Author(s):  
Aditya Hikmat Nugraha ◽  
Dietriech G. Bengen ◽  
Mujizat Kawaroe
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Physiological Responses ◽  
Research Station ◽  
Marine Biota ◽  
Nursery Ground ◽  
Thalassia Hemprichii ◽  
Growth Physiology ◽  
Rhizome Growth ◽  
Seagrass Ecosystem

Seagrass ecosystem is one of tropical marine ecosystem and have important function. The function of ecosystem like a feeding and nursery ground for marine biota. Antrophogenic pressure is one of threat for seagrass ecosystem sustainability. This research study about effect antropogenic pressure for seagrass Thallasia hemprichii physiology response in some different location at Great Barrier Pari Island. The physiology response study cover growth, heavy metal bioaccumulation and histology analysis. The result shows that growth of leaf and rhizome Thalassia hemprichii have positif correlation with nutrient consentration in environment. The highest growth of leaf Thalassia hemprichii at 2nd station (4.16 mm.day-1) and the highest growth of rhizome Thalassia hemprichii at 4th station (1.3 mm.day-1). Seagrass can accumulation heavy metal from environment. The highest heavy metal accumulation is Pb. Not correlation between heavy metal consentration in seagrass with heavy metal concentration from environment. Analysis histology result that not damage seagrass tissue in all research station. Keyword : Bioacumulation,Growth,Physiology,Seagrass, Thalassia hemprichiiSeagrass ecosystems is one of the tropical marine ecosystems that have important functions, among others as a feeding and nursery ground for marine life. Anthropogenic stress is one of the threats that may inhibit the survival of seagrass ecosystems. This study examines the effects of anthropogenic pressures on physiological responses of seagrass Thalassia hemprichii at several different locations in Pari Islands. Physiological responses studied were leaves and rhizome growth, bioaccumulation of heavy metals and histological tissue analysis on seagrass. The results showed that the growth response of seagrass has a positive correlation with the nutrients in the environment. Seagrass leaf growth is highest at Station 2 (4.16 mm.day-1) and rhizome growth is highest at Station 4 (1.3 mm.day-1). Seagrass accumulate heavy metals from the environment and accumulation of heavy metals is highest on Pb. There is no correlation between the concentration of heavy metals in the seagrass and environment. The results of histological analysis showed that there was no damage to the tissue of seagrass leaf and rhizome. Keywords : Bio-acumulation, Growth, Physiology, Seagrass, Thalassia hemprichii

scholarly journals The Uptake Mechanism of Cd(II), Cr(VI), Cu(II), Pb(II), and Zn(II) by Mycelia and Fruiting Bodies ofGalerina vittiformis

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Dilna Damodaran ◽  
Raj Mohan Balakrishnan ◽  
Vidya K. Shetty
Keyword(s):  
Heavy Metals ◽  
Heavy Metal Stress ◽  
Life Forms ◽  
Metal Stress ◽  
Fruiting Bodies ◽  
Tolerance Mechanism ◽  
Cellular Mechanisms ◽  
Uptake Mechanism ◽  
Cadmium Lead ◽  
Analytical Tools

Optimum concentrations of heavy metals like copper, cadmium, lead, chromium, and zinc in soil are essential in carrying out various cellular activities in minimum concentrations and hence help in sustaining all life forms, although higher concentration of these metals is lethal to most of the life forms.Galerina vittiformis, a macrofungus, was found to accumulate these heavy metals into its fleshy fruiting body in the order Pb(II) > Cd(II) > Cu(II) > Zn(II) > Cr(VI) from 50 mg/kg soil. It possesses various ranges of potential cellular mechanisms that may be involved in detoxification of heavy metals and thus increases its tolerance to heavy metal stress, mainly by producing organic acids and phytochelatins (PCs). These components help in repairing stress damaged proteins and compartmentalisation of metals to vacuoles. The stress tolerance mechanism can be deduced by various analytical tools like SEM-EDX, FTIR, and LC-MS. Production of two kinds of phytochelatins was observed in the organism in response to metal stress.

scholarly journals Biotechnological aspects of transformation of heavy metal salts and their detoxication in milk of milk cows

2021 ◽  
Vol 262 ◽  
pp. 02010
Author(s):  
Boris Dzagurov ◽  
Oleg Getokov ◽  
Vladimir Gukezhev ◽  
Taladin Kokov ◽  
Vitaly Vorokov
Keyword(s):  
Heavy Metals ◽  
Dairy Cows ◽  
Particle Diameter ◽  
Bentonite Clay ◽  
The Body ◽  
Control Group ◽  
Milk Cows ◽  
Heavy Metal Salts ◽  
Cadmium Lead ◽  
Experimental Group

Based on the results of previous studies on pigs and poultry, in which encouraging results of a significant decrease in the concentration of heavy metals in the body were obtained, respectively, in pork, poultry and eggs, the study provided for the use of the bentonite clay of the Zamankul deposit (RNO-Alania) as an enterosorbent in relation to heavy metals and detoxification of the organism of dairy cows. In order to study the feasibility of using bentonite as an enterosorbent, studies were performed on dairy cows of the Simmental breed in the Kaloyev farm located in st. Zmeyskaya, Kirovsky district of North Ossetia-Alania. To conduct research on the principle of analog pairs, two experimental groups of cows (control and experimental, five cows in each group) of the 3rd and 4th lactation were formed. The experiment lasted for 305 days of lactation from March 2018 to January 2019. Herewith, the control group of cows was fed with a basic diet balanced in all nutritional elements, the experimental livestock, together with the main diet, daily in the composition of the concentrates was injected with crushed bentonite with a particle diameter of 4-6 mm based on the dry matter of the feed (137 g/animal). The study of the concentration of heavy metals (cadmium, lead and zinc) in soil, feed, blood and milk was performed in two periods of lactation (on the 250th and 300th days of lactation). Herewith, an increased content of heavy metals in the soil was established, relative to the MPL: cadmium - 10.1; lead - 7.4; zinc - 9.7 times more, in drinking water: cadmium - 2.5 times; lead - 9.0 times and zinc - 9.7 times more, in feed: cadmium - from 1.7 to 5.3 times; lead - from 1.1 to 1.7; zinc - from 1.0 to 2.5 times the MPL. The inclusion of bentonite to the ration of the animals of the experimental group, in comparison with the control group, in both study periods (250 and 300 days of lactation) contributed to a significant decrease in the concentration of the studied heavy metals in the blood from 17 to 20%, in milk - from 16 to 18 %. The transformation ration values of heavy metals from feed into the body, respectively, into milk, were also lower in the animals of the experimental group, relative to the control.

scholarly journals CONCENTRATION OF HEAVY METALS IN WATER FLOWS IN THE AREA OF UNALSKY TAILING DUMP AND ARDON RIVER

2018 ◽  
Vol 13 (2) ◽  
pp. 113-122 ◽  
Author(s):  
Dzerassa N. Chigoeva ◽  
Inna Z. Kamanina ◽  
Svetlana P. Kaplina
Keyword(s):  
Heavy Metals ◽  
Production Capacity ◽  
Chemical Pollution ◽  
Environmental Disaster ◽  
Tailing Dump ◽  
Maximum Permissible Concentrations ◽  
History Of ◽  
Lead Zinc ◽  
Domestic Use ◽  
Cadmium Lead

The long history of development of deposits of lead-zinc ores of the Sadonsky mining region led to the formation of extensive halos of chemical pollution of surface watercourses. Aim. The aim of this study is to monitor surface watercourses in the area of the Unalsky tailing dumps and the Kholst deposit by points of sampling of 1992-2004. Sampling was conducted in the summer of 2016. Methods. The content of heavy metals of 2 and 3 hazard classes (Pb, Cd, Ni, Zn and Cu) was studied by atomic absorption. The contribution of the Unaldon River and Unalsky tailing dump to the pollution of the Ardon River. Results. The highest content of cadmium, lead and zinc, significantly exceeding the maximum permissible concentrations (MPC) in the water bodies of cultural and domestic use is found in the Ardon River down from the Unalsky tailing dump. The flow of heavy metals into the Unaldon River with adit waters compared with the observation period of 1992-2004 decreased noticeably. In conditions of a reduction in the production capacity of mining and processing enterprises, the leaching of heavy metals from mountain dumps and excavations make an insignificant contribution to the pollution of the Ardon River in comparison with the Unalsky tailing dump. Conclusion. The state of the Ardon River down from the discharge from the tailing dump corresponds to the "environmental disaster" category. The condition of the rivers Mayramdon and Unaldon according to the content of heavy metals corresponds to a "relatively satisfactory" type.

scholarly journals DETECTION AND SAFETY AWARENESS OF HEAVY METALS IN COSMETIC PRODUCTS FREQUENTLY USED IN SAUDI ARABIA

2021 ◽  
Vol 9 (10) ◽  
pp. 1439-1448
Author(s):  
Samia S. Barghash ◽  
◽  
Hatem Abdel Moniem Ahmed ◽  
Modhi K. Al-Baker ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Saudi Arabia ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Cosmetic Products ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Saudi Women ◽  
Cadmium Lead ◽  
Gf Aas

Background: Heavymetalscontaminationincosmeticproducts isbecoming animportant healthprobleminboth worldwide and locally at the level of the Kingdom of Saudi Arabia (KSA).The aim of this study was to detectthe concentration of heavy metals in the most commonly used eyeliners purchased in Saudi Arabia. Also, to assesssafetyawarenessoftoxicelementsofmostconcernheavymetalsin cosmetics. Methods: A cross-sectional survey was designed and distributed electronically in Saudi Arabia in November 2015.The questionnairewas conducted on 769 Saudi women aged from15-60 years old that is using cosmetic products. Secondly, 10samples from 10 different types of eyeliners frequently used in Saudi Arabia were digested. The digested sampleswere analyzed for lead, cadmium andmercury using graphite furnace- atomic absorption spectrometry (GF-AAS). Results:Themajorityofcosmetictypesusedbyparticipantswereeye-linerkohl(73.9%).About(34.59 %) of participants were not aware about heavy metals contents in cosmetics. The heavy metals, cadmium, lead andmercury were detected in all samples with varying concentrations. The level of lead was the highest. There was asignificant difference of cadmium, lead and mercury concentration p< (0.05) in different brands of eyeliner. Therewasstatisticallysignificant difference betweencadmiumandlead alsobetweenmercuryandlead p<0.05ofdifferenteyelinerbrands. Conclusion: It was foundthatthemajorityofparticipantsexpectedthatexpensivecosmeticsaresafe and theypreferred internationalbrandswhichisnotnecessarytobesafe.

scholarly journals Treatment of Post-Hydrothermal Liquefaction Wastewater (PHWW) for Heavy Metals, Nutrients, and Indicator Pathogens

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 854 ◽  
Author(s):  
Samuel D. Jesse ◽  
Paul C. Davidson
Keyword(s):  
Heavy Metals ◽  
Environmental Protection Agency ◽  
Water Reuse ◽  
Crop Production ◽  
Hydrothermal Liquefaction ◽  
Total N ◽  
Treatment Methods ◽  
Attractive Option ◽  
Us Epa ◽  
Cadmium Lead

Recycling post-hydrothermal liquefaction wastewater (PHWW) may allow the use of nutrients in the aqueous phase that may otherwise go unused. PHWW is an attractive option for use as fertilizer in systems like crop production. However, there are potential contaminants in the PHWW that may inhibit crop growth or pose a food safety risk. This study investigated the concentrations of heavy metals and nutrients in the PHWW, as well as the presence of indicator pathogens. In addition, four different water treatment methods were used: (1) dilution of raw PHWW, (2) sand filtration after dilution, (3) sand and carbon filtration after dilution, and (4) reverse osmosis after dilution. Our results indicate that the concentrations of cadmium, lead, and arsenic in raw PHWW were well below the maximum recommended concentrations set by the US Environmental Protection Agency (US EPA) for Water Reuse. In addition, the treatment methods in this study achieved percent removals ranging from 82–100% for cadmium, 99–100% for mercury, 75–99.5% for lead, and 71–99% for arsenic. Nitrogen in raw PHWW was predominantly in the total N form, preventing it from being accessible to plants. After nitrification was induced, the concentration of NO3 + NO2 increased by 1.75 mg/L in the untreated 5% PHWW mixture, but remained unchanged or decreased for all other treatments and mixtures. There were no E. coli or coliform colonies detected in the raw PHWW, or in any PHWW mixtures. All PHWW mixtures with and without treatment are within US EPA guidelines for metals for irrigation water reuse. However, fertilizer supplementation may be required for PHWW to be suitable for crop production, as the low concentrations of NO3 + NO2 may prove challenging for growing crops.

THE STUDY ON NOVEL MICROELECTRODE ARRAY CHIPS FOR THE DETECTION OF HEAVY METALS IN WATER POLLUTION

2012 ◽  
Vol 05 (01) ◽  
pp. 1150002 ◽  
Author(s):  
HUI-XIN ZHAO ◽  
WEI CAI ◽  
DA HA ◽  
HAO WAN ◽  
PING WANG
Keyword(s):  
Heavy Metals ◽  
Microelectrode Array ◽  
Electrochemical Impedance ◽  
Copper Ions ◽  
Rapid Development ◽  
Anodic Stripping Voltammetry ◽  
Aqueous Environment ◽  
Mercury Film ◽  
Voltammetric Detection ◽  
Cadmium Lead

Qualitative and quantitative analysis of trace heavy metals in aqueous environment are rapidly assuming significance along with the rapid development of industry. In this paper, gold microelectrode array (MEA) plated with mercury film was used for simultaneous voltammetric detection of zinc, cadmium, lead and copper ions in water. The electrochemical behavior and the actual surface area of the MEA were investigated by cyclic voltammetry in K3[Fe(CN)6] . Electrochemical impedance spectrum (EIS) was utilized to examine the deposition of mercury on the electrode surface. Based on anodic stripping voltammetry, mercury film– Au MEA was applied to the detection of heavy metals in artificial analyte, where good calibrate linearity was obtained for cadmium, lead and copper ions, but with zinc exhibiting poor linearity.

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