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Interactions of mercury in the environment

100%

Maluszynska I., Popenda A., Maluszynski M. J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2013

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tom 45

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nr 2

Mercury is a pollutant of global concern largely due to its potential for biological transformation into harmful forms and bioaccumulation through the food chains. Mercury is not able to biodegrade in the environment and it forms many toxic inorganic and organic complexes. The strongest harmful effects of mercury concerns the central nervous system. The harmful effects of mercury is very stable, because the mercury compounds bind to enzymes. Getting into the brain, mercury displace zinc from brain tissue, and thus reduces the effi ciency of the brain. Then excreted in the cell nuclei and destroys the genetic material. The antagonism between zinc and mercury partially modifies its toxic effects. Mercury is combined with active groups of proteins and amino acids, accumulating in the body. Selenium has similar affinity, limiting connects these groups with mercury, reducing its toxicity. Antagonists are also cadmium, mercury and zinc, but their effects are most likely related with the action of selenium. Antagonist for mercury is also iodine content in the thyroid gland which is lowered, the excessive concentration of mercury in the body. It is known that taking selenium, zinc and thiols, e.g. GSH and NAC, are of prime importance in considering effects on human organisms as well as the level of its excretion. Due to the fact that interactions are dynamic and poorly understood at present the better understanding of their role requires the further studies. Despite that have been identifi ed interactions between elements and mercury, limiting its toxic effects, we still do not have sufficient knowledge about how to reduce the negative effects of this element on the human body. The definition of what is an acceptable daily dose of mercury for humans also does not quarantee protection of the health, because we do not know the exact limits of tolerance for different follow-up effects of prolonged exposure to low concentrations. It should also be pointed out that the interactions are dynamic and weakly understood at present. The better understanding of the role the afore-mentioned particles may be crucial in the to study the interaction between mercury and various environmental components and to find a substance that interacts with mercury to reduce its toxicity to living organisms.

2

The relationship between parasite community structure and level of bioaccumulation of pollutants within parasite environment

100%

Sebelova S., Dusek L., Machala M., Gelnar M., Jurajda P.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

3

Accumulation of manganese in selected links of food chains in aquatic ecosystems

86%

Niemiec M., Wisniowska-Kielian B.

Journal of Elementology

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2015

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tom 20

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nr 4

The accumulation of elements in biocenoses of aquatic ecosystems depends primarily on the forms of elements in the environment. The bioaccumulation coefficient (BC) is a measure of the intensity of an elements uptake of trace by living organisms. Manganese is an essential element for both plant and animal organisms. However, its excess may cause a toxic effect, i.e. it disturbs the activity of synapses, thus leading to an impaired functioning of the central nervous system. This study focused on the accumulation of manganese in individual links of an aquatic ecosystem food chain under conditions of extensive carp farming. The BC values were computed and the pollution degree of the fish pond was estimated. The investigations were conducted in a fish pond situated in Mydlniki and fed with water from the Rudawa River. Water, bottom sediment, benthic organisms (Diptera Chironomidae larvae) and carps were sampled from the pond. Organs most strongly involved in the metal metabolism (gills, gonads, liver and muscles) were prepared from sampled carps. Manganese concentrations were determined in all samples using atomic emission spectroscopy after wet mineralization of samples in a closed system in a microwave mineralizer. The concentrations of manganese in the abiotic elements of pond ecosystems were low and should not pose any threat of its excessive accumulation in living organisms. However, the manganese concentrations in the benthic organisms and in the analyzed carp organs were high. Similarly, other authors found high manganese concentration in fish living in the environments polluted with this element. The value of manganese enrichment coefficient for the bottom sediments in relation to its water concentration was high. The biggest manganese content was assessed in gills, then in the liver and gonads, and the smallest one - in carp muscles. Manganese BCs in the gills of carps in relation to its content in water and bottom sediments were 176.6 and 0.08, respectively. The BC values in relation to the manganese concentration in water were much higher, but lower in comparison to its content in bottom sediments than reported elsewhere. This confirms that the BC for manganese in gills varies depending on the water pollution level.

4

Effect of bottom sediment on content, bioaccumulation and translocation on heavy metals in maize biomass

86%

Jasiewicz C., Baran A., Tarnawski M.

Journal of Elementology

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2010

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tom 15

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nr 2

281-290

The research aimed to assess the effect of bottom sediment on the content, bioaccumulation and translocation of heavy metals in maize biomass. The investigations were conducted in 2006-2007 as a pot experiment on light soil of the granulometric composition of weakly-loamy sand. The experimental design comprised 3 treatments: without sediment (I), a 5% sediment admixture (II) and a 10% sediment admixture to the soil (III). Bottom sediment was added to the soil in the first year of the investigations. The content of Zn, Cu, Ni. Pb, Cd and Cr was determined using the ICP-EAS method in the plant material after its dry mineralization and ash solution in HNO3. The uptake of the above-mentioned metals by maize was computed alongside their bioaccumulation and translocation coefficients. The effect of bottom sediment admixture on heavy metal concentrations in maize was determined to be varied, e.g. a 5% dose of sediment added to soil decreased the content of all the analyzed heavy metals in the biomass of maize aerial parts, whereas a 10% admixture increased the content of Cu, Ni, Pb and Cr. The values of bioaccumulation coefficients revealed that an admixture of both doses of bottom sediment led to a decreased accumulation of Zn, Cu, Cd, Cr and Ni (5% dose) in maize aerial biomass. Moreover, the plant more easily accumulated Zn, Cd and Cu than Cr, Ni or Pb. Permissible amounts of heavy metals in plants to be used as animal fodder were not exceeded in the maize biomass.

5

Biosorption and bioaccumulation of thallium[I] and its effect on growth of Neosartorya fischeri strain

86%

Urik M., Kramarova Z., Sevc J., Cernansky S., Kalis M., Medved J., Littera P., Kolencik M., Gardosova K.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 2

457-460

Little is known about thallium behavior in the environment, especially its interactions with microorganisms such as fungi. This article evaluates basic interactions (bioaccumulation, biosorption and growth inhibition) between thallium and the common heat-resistant fungal species Neosartorya fischeri. The results suggest that the N. fischeri strain is relatively resistant to elevated concentrations of thallium in cultivation media up to 1 mg・l⁻¹. However, the toxic effect of thallium on fungal growth depends on the time of cultivation, and after 30-day cultivation growth inhibition was reduced. The bioaccumulation of thallium after 30-day cultivation by fungal strain was 35.74 mg・kg⁻¹ and 432.91 mg・kg⁻¹ for initial concentration 1.012 and 4.861 mg・l⁻¹ of Tl(I) in medium, respectively. The biosorption capacity was calculated to be 11.77 mg・kg and 62.01 mg・kg⁻¹ for initial concentration 1.012, and 4.861 mg・l⁻¹ of Tl(I) in medium, respectively.

6

Role of glutathione and glutathione S-transferase in lead tolerance and bioaccumulation by Dodonaea viscosa (L.) Jacq

86%

Rojas-Loria C. C., Favela-Torres E., Gonzales-Marquez H., Volke-Sepulveda T. L.

Acta Physiologiae Plantarum

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2014

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tom 36

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nr 09

Glutathione (GSH) plays a central role in the plant tolerance against the toxic effects of metals. It is a key antioxidant and acts as a cofactor for glutathione S-transferase (GST). The main objective of this study was to determine the Pb tolerance and bioaccumulation by Dodonaea viscosa (L.) Jacq. and their relation to GSH production and GST activity. The relationship between the Pb tolerance and bioaccumulation by D. viscosa and the effect of the exposure time on the GSH production or the GST activity was assessed in trials with perlite under different Pb treatments. D. viscosa showed a remarkable tolerance to Pb [half-inhibitory concentration (IC₅₀) = 2,797 mg kg⁻¹] and accumulated up to 11,428 mg Pb kg⁻¹ in dry roots with a limited translocation to shoots without any signs of phytotoxicity after 105 days of exposure. The stress caused by the fast Pb uptake rate (489 mg kg⁻¹ day⁻¹) during the first 10 days of exposure was strongly correlated to increased GSH contents (~1.3-fold) and GST activities (~3.6-fold) in both shoots and roots. The results indicate that the Pb stress triggered a defense mechanism that involved increased contents of GSH and GST activities, suggesting that both variables are involved in the tolerance of D. viscosa against Pb toxicity.

7

Changes in nitrogen and magnesium contents in pea under the effect of nitrogen fertilization

86%

Symanowicz B., Kalembasa S., Jaremko D., Krasuski S.

Acta Scientiarum Polonorum. Agricultura

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2020

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tom 19

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nr 4

8

Impact of the bioaccumulation of selected toxic elements on the condition of bees and other organisms

86%

Madras-Majewska B., Ochnio L., Ochnio M.

Medycyna Weterynaryjna

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2014

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tom 70

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nr 12

Toxic elements often occur in the natural environment at doses higher than the maximum allowable concentration. The honey bee (Apis mellifera L.) is inextricably connected with the external environment, from which it obtains air and water and food. Bees are exposed to contaminants while collecting pollen, nectar, honeydew and water. Therefore, they are highly sensitive to all kinds of environmental pollution and water and air contamination. It is proven that there is a close relationship between the level of accumulation of heavy metals in soil and plants and their content in the bodies of bees and in bee products. Bees are good biological indicators of environmental contamination. At the same time, heavy metals accumulate in bee products that are later consumed by humans and animals. Research on the content of these metals in the bodies and brood of bees is extremely important because the increased use of chemicals in agriculture and other environmental factors, such as pollution with toxic elements, affect the health and mortality of bees. This paper provides an overview of studies on the harmfulness and bioaccumulation of lead, mercury and cadmium in the bodies of bees and on the impact of these elements on living organisms.

9

The effect of potassium fertilization on lithium and aluminium content in eastern galega (Galega orientalis Lam.) and in the soil

86%

Szymanowicz B., Kalembasa S., Krasucki S.

Acta Scientiarum Polonorum. Agricultura

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2019

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tom 18

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nr 4

10

Differences of chloroorganic pesticides and polychlorinated biphenyls bioaccumulation in selected organisms from the Gulf of Gdansk

86%

Sapota G.

Oceanological Studies

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2002

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tom 31

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nr 1-2

11

Dioxins and dioxin - like chemicals in breast milk Czech Republic data in a European context

86%

Bencko V., Cerna M., Jech L.

Folia Histochemica et Cytobiologica. Supplement

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2001

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tom 39

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nr 1

12

Seasonal assessment of biological indices, bioaccumulation and bioavailability of heavy metals in mussels Mytilus galloprovincialis from Algerian west coast, applied to environmental monitoring

72%

Rouane-Hacene O., Boutiba Z., Belhaouari B., Guibbolini-Sabatier M. E., Francour P., Risso-de Faverney R.-d.

Oceanologia

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2015

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tom 57

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nr 4

13

Use of selected aspects of Cepaea nemoralis (Gastropoda: Pulmonata) polymorphism in environmental biomonitoring on Lublin area

72%

Kowalczyk-Pecka D., Stryjecki R.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

14

Cultivation of peppermint (Mentha piperita rubescens) using water treated with low-pressure, low-temperature glow plasma of low frequency

72%

Pisulewska E., Ciesielski W., Jackowska M., Gastol M., Oszczeda Z., Tomasik P.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2018

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tom 21

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nr 3

15

Teeth of the red fox Vulpes vulpes (L., 1758) as a bioindicator in studies on fluoride pollution

72%

Kalisinska E., Palczewska-Komsa M.

Acta Theriologica

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2011

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tom 56

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nr 4

An examination was made of fluoride content in the mandibular first molars of the permanent teeth of the red fox Vulpes vulpes living in north-west (NW) Poland. The teeth were first dried to a constant weight at 105°C and then ashed. Fluorides were determined potentiometrically, and their concentrations were expressed in dry weight (DW) and ash. The results were used to perform an indirect estimation of fluoride pollution in the examined region of Poland. The collected specimens (n = 35) were classified into one of the three age categories: immature (im, 6–12 months), subadult (subad, from 12 to 20 months) and adult (ad, >20 months). The mean concentrations (geometric mean) of fluoride were similar in the im and subad groups (230 and 296 mg/kg DW and 297 and 385 mg/kg ash, respectively), and significantly smaller than in the ad group (504 and 654 mg/kg, respectively, in DW and ash). Basing on other reports that the ∼400 mg/kg DW concentration of fluoride in bones in the long-lived wild mammals generally reflects the geochemical background, it was found that 57% of the foxes in NW Poland exceeded this value by 9% to 170%. This indirectly reflects a moderate fluoride contamination in the tested region.

16

Bioaccumulation of Cr(VI) ions from aqueos solutions by Aspergillus niger

72%

Holda A., Kisielowska E., Niedoba T.

Polish Journal of Environmental Studies

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2011

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tom 20

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nr 2

Our paper presents biological Cr(VI) removal from water solution by applying a clean fungi culture, namely Aspergillus niger. The growth of the organism and removal of chromium(VI) were done in water solution of various chromium(VI) contents and at optimal pH value. During 14 days of incubation, samples of 5 ml each were collected daily to determinate chromium(VI) contents in solution. Then the efficiency of this biological removal was also specified. The Cr(VI) removal process may occur via reduction, biosorption, or bioaccumulation pathways. To determine which pathway may be used in the study the Cr(III) contents were also determined in the samples as well chromium contents in ooze after mycelium irrigating and in mycelium.

17

Comparative study of microelement accumulating characteristics of microalgae

72%

Molnar S., Milinki E., Kiss A.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

18

Bioremediation of chromium ions with filamentous yeast Trichosporon cutaneum R57

72%

Bajgai R. C., Georgieva N., Lazarova N.

Journal of Biology and Earth Sciences

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2012

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tom 02

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nr 2

19

Trend of arsenic pollution and subsequent bioaccumulation in Oryza sativa and Corchorus capsularis in Bengal Delta

72%

Bhattacharya S., Guha G., Gupta K., Chattopadhyay D., Mukhopadhyay A., Ghosh U. C.

International Letters of Natural Sciences

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2014

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tom 16

Oryza sativa Linn. (rice) and Corchorus capsularis Linn. (jute) are the two major crops of the Bengal basin. Both rice and jute are generally grown in submerged flooded conditions, where arsenic bioavailability is high in soil. The consumers of the edible parts from both plants therefore face an inevitable source of exposure to arsenic, with consequent accumulation and toxicity. The objective of the study was to observe the in-vivo temporal variation of arsenic bioaccumulation in the different parts of O. sativa and C. capsularis. Rice plant specimens (Aman rice, Ratna variety) of different age groups (1, 2 and 3 months old) were analyzed in HG-AAS for absorbed arsenic content in different parts. The accumulation of arsenic remained significantly high in the initial phase of growth, but decreased with time. Amount of arsenic bioaccumulation followed the decreasing order: root > basal stem > median stem > apical stem > leaves > grains in all the three age groups of the rice plant samples. C. capsularis followed a trend of arsenic bioaccumulation similar to O. sativa. O. sativa had more accumulation potential than C. capsularis, but C. capsularis showed much higher efficiency of arsenic translocation in the above ground parts. This is the first ever report of time-dependent decrease in arsenic bioaccumulation in O. sativa and C. capsularis. The contamination level can reach the grain part in significant amount and can cause health hazards in more severely arsenic affected areas. Intensive investigation on a complete food chain is urgently needed in the arsenic contaminated zones for further risk assessments.

20

Trace metals in some organisms from the Southern Baltic

72%

Brzezinska A., Trzosinska A., Zmijewska W., Wodkiewicz L.

Oceanologia

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1984

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tom 18

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