Wyniki wyszukiwania

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Determination of total mercury in fish and Cormorant using cold vapour atomic absorption spectrometry

100%

Konieczka P., Misztal-Szkudlinska M., Namiesnik J., Szefer P.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 5

One of the most frequently used methods for determining total mercury content in biological samples is cold vapour atomic absorption spectrometry (CV-AAS), which is extensively used in the biomonitoring of environmental pollution. Seabirds are often used as bioindicators of metal contamination because of their specific feeding habits, wide geographical ranges and long lifespan. This paper describes the validation of CV-AAS for determining the total mercury content in biological samples (whole fish, cormorant tissues). The development and optimization of the procedure is outlined, and the main objective of this study was to calculate its validation parameters. The selectivity of the method was documented; linearity (r>0.993) ranged from 0.29 to 100 ng of total mercury per sample mass. For a total Hg content of 80-1,000 ng, a polynomial calibration curve derived directly the Lambert-Beer law was used. The method showed good recoveries (average 98.0%) and a relative standard deviation for repeatability of < 10%. The limit of detection was calculated at 0.096 ng of total Hg per sample mass. The uncertainty budget was evaluated according to the ‘Guide to the Expression of Uncertainty in Measurement’ (GUM) [1]; the relative expanded uncertainty was estimated at < 13%.

2

Determination of total mercury in urine by CV AAS

100%

Gazewski A., Trzcinka-Ochocka M., Brodzka R.

Acta Toxicologica

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2007

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tom 15

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nr 1

3

Mercury in immature and adults Herring Gulls (Larus argentatus) wintering on the Gulf of Gdansk area

84%

Szumilo E., Szubska M., Meissner W., Beldowska M., Falkowska L.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 3

4

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Fluxes and balance of mercury in the inner Bay of Puck, Southern Baltic, Poland: an overview

84%

Boszke L.

Oceanologia

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2005

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tom 47

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nr 3

The aim of the study was to analyse the balance of mercury (Hg), i.e. the content of this metal, its inflow and outflow, in the ecosystem of the Bay of Puck. Based on literature data and the results of the author’s own study, this analysis has shown that the main source of Hg pollution is the atmosphere. An estimated 1.1–3.8 kg of Hg enters annually from the atmosphere, whereas the mass of Hg carried there by river waters per annum is about 7 times lower (0.13–0.44 kg year−1). The 0.9 –2.7 kg year−1 of Hg released from Bay of Puck waters to the atmosphere is of the same order as the quantity deposited from the atmosphere. The total amount of Hg deposited in the upper (0–5 cm deep) layer of the sediments has been estimated at 240–320 kg, its rate of entry being c. 2.25–2.81 kg year−1. 0.25–1.25 kg year−1 of Hg are released from the bottom sediments to bulk water, while 0.61–0.97 kg remains confined in aquatic organisms, including 133 g in the phytobenthos, 2.6 g in the zooplankton, 420–781 g in the macrozoobenthos and 34 g in fish.

5

Contents of methylmercury and total mercury in Baltic Sea fish and fish products

84%

Barska I., Skrzynski I.

Bulletin of the Sea Fisheries Institute

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2003

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nr 3

6

The influence of weight and length on the mercury content in the muscle tissue of fish from four lakes in the Olsztyn Lake District (Poland)

67%

Luczynska J.

Archives of Polish Fisheries

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2005

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tom 13

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nr 1

The total mercury content was determined in the muscle of northern pike, perch, and roach caught in four lakes (Łańskie, Pluszne, Dłużek, Maróz) in the Olsztyn Lake District (northeastern Poland) from October 1999 to October 2000. The total mercury was analyzed with flameless cold vapor atomic absorption spectrometry (CV AAS). The total mercury content in the muscle of pike ranged from 0.076 mg kg⁻¹ (Łańskie) to 0.902 mg kg⁻¹ (Pluszne), in perch from 0.104 mg kg⁻¹ (Pluszne) to 1.277 mg kg⁻¹ (Dłużek), and in roach from 0.074 mg kg⁻¹ (Maróz) to 0.278 mg kg⁻¹ (Maróz). In most cases, the strongest positive correlation (p < 0.001) was found between the Hg concentration in the muscle tissue of the fish and total body weight (0.825 < r < 0.967) or total body length (0.781 < r < 0.950). The exception was the roach from Lake Maróz, where the correlation coefficients between mercury content in the muscle of these fish and their body weight and total length were r = 0.794 and r = 0.788, respectively (p < 0.01). Similarly, with pike from Lake Maróz it was found that the correlation coefficient between the mercury concentration in the muscle of these fish and their total length was r = 0.781 (p < 0.01).

7

Total mercury in floodplain soils of the Warta River, Poland

67%

Boszke L., Kowalski A.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 4

517-523

The aim of this study was to determine spatial distribution of mercury in floodplain soils of the middle Warta river with special regard to the polluting influence of the city of Poznań (capital of the Wielkopolska District) and high water levels and floods. Total mercury concentration was determined in samples collected from eleven sampling sites located above, below and in the area of Poznań agglomeration. From each site three soil samples were collected at distances of 1, 10 and 50 meters from riverside. The method used for the determinations was cold vapour atomic fluorescence spectrometry (CV-AFS). The results of the study have shown that mercury distribution in the samples of floodplain soil of Warta river was relatively uniform. However, higher mercury concentrations were found in the floodplain soils collected below of Poznań (median 300 ng g-1, range 75-884), lower in soil samples above of Poznań (228 ng g-1, range 54-754) and from the city area (183 ng g-1, range 72-303).

8

Assessment of mercury in muscles, liver and gills of marine and freshwater fish

67%

Luczynska J., Luczynski M. J., Paszczyk B.

Journal of Elementology

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2016

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tom 21

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nr 1

In this study, the total mercury concentration was determined in the muscles, liver and gills of six fish species (rainbow trout Oncorhynchus mykiss Walb., carp Cyprinus carpio L., bream Abramis brama L., perch Perca fluviatilis L., ide Leuciscus idus L. and flounder Platichthys flesus L.). The fish were acquired from October to November 2012. Mercury was analyzed by atomic absorption spectrometry using thermal decomposition, compounds of mercury and amalgamation. The mercury content in fish organs reached 0.006-0.168 (in mg kgˉ¹ wet weight) in muscles, 0.001-0.027 in gills and 0.003-0.045 in the liver. The muscles of perch and ide had significantly more Hg compared to the other fish’s muscles (P≤0.05). The liver and gills of perch, ide and flounder contained more Hg than the same tissues of the other fish (P≤0.05). Generally, the highest Hg content was determined in muscles (except rainbow trout) (P≤0.05), whereas the lowest Hg content was found in gills (except perch) (P≤0.05). The content of Hg in gills of perch did not differ from the one in the liver (P>0.05). There was a positive correlation between the weight or length of a fish and the Hg concentration in its tissues, except for the length and Hg in the gills of carp. However, a statistically significant positive correlation between the body weight and the Hg levels in fish appeared only in the case of the organs of ide (P≤0.004) and muscles of carp (P≤0.038). The correlation between the factor condition and the content of Hg, albeit positive (0.106 < r < 0.811) except for the organs of flounder, was not statistically significant (P>0.05).

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Badania metodyczne oznaczania całkowitej zawartości rtęci w glebach i materiale roślinnym

67%

Malczyk P., Dabkowska-Naskret H.

Acta Agrophysica

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2001

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tom 56

10

Determination of total mercury concentration in hair of Lubartow-area citizens [Lublin Region, Poland]

67%

Kowalski R., Wiercinski J.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 1

The aim of the experiment was to evaluate mercury content in the hair of people in Lubartów and surrounding areas (Lublin region, Poland) depending on their place of residence, lifestyle and diet. Mean mercury content in the hair of tested general population from Lubartów and surroundings, which amounted to 0.10±0.07 μg g⁻¹, was similar to the results achieved by other authors for populations from Zamość and Warsaw regions as well as about three or four times lower as compared to concentrations determined for Lublin region in 1979. It was found that mean mercury concentrations in the hair of people who had a diet rich in fish products was significantly higher as compared to mean values for remaining groups. It was recorded that the hair of smokers contained significantly higher mercury levels than that of other non-smoking respondents (0.14±0.09 μg g⁻¹ for smokers, 0.05±0.03 μg g⁻¹ and 0.09±0.06 μg g⁻¹ for non-smokers). No influence of hair dying on elevating the mercury content was found.

11

Badania nad bioakumulacja rteci w wytworach skory u czlowieka i zwierzat w terenach zurbanizowanych

43%

Dobrzanski Z., Bolanowski J., Pokorny P., Patkowska-Sokola B., Zawadzki W.

Acta Scientiarum Polonorum. Medicina Veterinaria

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2007

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tom 06

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nr 3

3-9

Ograniczanie wyników

Determination of total mercury in fish and Cormorant using cold vapour atomic absorption spectrometry

Determination of total mercury in urine by CV AAS

Mercury in immature and adults Herring Gulls (Larus argentatus) wintering on the Gulf of Gdansk area

Fluxes and balance of mercury in the inner Bay of Puck, Southern Baltic, Poland: an overview

Contents of methylmercury and total mercury in Baltic Sea fish and fish products

The influence of weight and length on the mercury content in the muscle tissue of fish from four lakes in the Olsztyn Lake District (Poland)

Total mercury in floodplain soils of the Warta River, Poland

Assessment of mercury in muscles, liver and gills of marine and freshwater fish

Badania metodyczne oznaczania całkowitej zawartości rtęci w glebach i materiale roślinnym

Determination of total mercury concentration in hair of Lubartow-area citizens [Lublin Region, Poland]

Badania nad bioakumulacja rteci w wytworach skory u czlowieka i zwierzat w terenach zurbanizowanych