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1

Arsen, antymon i selen jako mikroskladniki czy mikrozanieczyszczenia wod?

100%
Niedzielski P.
Ekologia Praktyczna
|
2002
|
nr 07
23-26
2

Rtec w srodowisku przyrodniczym

84%
Kowalski A., Niedzielski P.
Przegląd Komunalny
|
2005
|
nr 03
18-19
3

Arsenic speciation in marine sediment samples from the 26.12.2004 tsunami area in Thailand

84%
Kozak L., Niedzielski P.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 1
87-92
Our paper reports results of speciation analysis of arsenic(III) and (V) in the exchangeable fraction of the marine sediments from the Andaman Sea. The sediments were collected from the coastal zone at the coast of Thailand affected by the 2004 tsunami waves. The samples were extracted with phosphate buffer and then subjected to determination of inorganic species of arsenic by HPLC-HG-AAS. A correlation between the contents of arsenic and grain size of the sediments was found. Higher content of As(III) established in fine grain fraction of the sediment can suggest its deposition by tsunami.
4
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Finansowanie publicznej komunikacji zbiorowej w aglomeracjach miejskich w Polsce

84%
Ziolo M., Niedzielski P.
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Polityki Europejskie, Finanse i Marketing
|
2019
|
nr 21[70]
5

Oczekiwania MSP na usługi w zakresie innowacyjności w świetle badania ankietowego

84%
Niedzielski P., Markiewicz J.
Biuletyn PAN. Komitet Przestrzennego Zagospodarowania Kraju
|
2007
|
nr 235
6

Oznaczenia form arsenu [III] i arsenu [V], antymonu [III] i antymonu [V] oraz selenu [IV] i selenu [VI] w wodach powierzchniowych miasta Poznania

84%
Kubinski A., Niedzielski P.
Ekologia i Technika
|
2004
|
tom 12
|
nr 4
120-131
7

Analytical methods for determining arsenic, antimony and selenium in environmental samples

84%
Niedzielski P., Siepak M.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 6
This paper presents a comparative description of different methods of determination of arsenic, anti­mony and selenium: spectrophotometric, electro-analytical (voltamperometry), activation analysis, atomic fluorescence and the methods of inductive or microwave-induced plasma in combination with different detection methods (emission or mass spectrometry). The description is based on literature data illustrating the present state of the metalloid determinations in different matrices. The limits of determination ensured by different methods are also compared. Much attention has been paid to methods combining chromato- graphic separation with selective detection, especially with the application of plasma generation methods (usually ICP-MS).
8

Content of 27 selected elements in the potentially mobile fraction of tsunami sediments

68%
Kozak L., Machat J., Niedzielski P.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 1
131-136
Our paper reports results of a study on the bioavailability of selected elements from sediments deposited by the tsunami event of 26 December 2004 in south Thailand. In January 2005, 15 samples of the sediments deposited by the tsunami were collected at four different localities. The reference sample was collected in an area not affected by the tsunami. In the acid leachable sediments fraction (the bioavailable fraction) the contents of 27 selected elements (Be, Ga, Bi, Rb, Cs, Sn, Mn, Re, Co, Rh, Ru, Mo, V, Nb, Ta, Zr, Sc, Th, Pt, La, Ce, Nd, Eu, Gd, Tb, Ho, Lu) were determined using ICP-MS. The measurements were repeated after one year to establish a potential effect of the rainy season on the content of these elements in this fraction.
9

Zawartosc arsenu, antymonu i selenu w wodach jezior Wielkopolskiego Parku Narodowego

68%
Niedzielski P., Siepak J., Pelechaty M., Burchardt L.
Morena
|
2000
|
nr 07
69-77
10

Instrumentalne metody oznaczania sladowych ilosci metali w probkach srodowiskowych

68%
Niedzielski P., Baralkiewicz D., Siepak J.
Ekologia i Technika
|
1996
|
tom 04
|
nr 4
26-30
11

Adsorpcyjna spektrometria atomowa jako metoda oznaczania sladowych ilosci metali w srodowisku

68%
Niedzielski P., Baralkiewicz D., Siepak J.
Ekologia i Technika
|
1996
|
tom 04
|
nr 3
27-31
12
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Assessment of iron in uterine and testicular tissues and hair of free - ranging and household cats

68%
Rzymski P., Niedzielski P., Dabrowski P.
Polish Journal of Veterinary Sciences
|
2015
|
tom 18
|
nr 4
Iron (Fe) represents a highly essential element for various biological processes. In spite of this very little is known as regards its status in mammalian reproductive tissues and factors that may potentially influence it. At the same time, there is an ongoing debate as to whether analyses of the Fe content in hair can provide reliable information on its tissue burden. Therefore, the aim of the present study was to investigate the content of Fe in the testicular and uterine tissues, and hair of the domestic cat (Felis catus) and how this content relates to an animal’s age, weight, physical activity, inhabited environment and diet. The median Fe content in the feline reproductive tissues amounted to 50.8 ppm and in hair to 180.2 ppm. As found, free-ranging cats were characterized by a significantly higher Fe content in reproductive tissues, particularly in the uterus. Age, weight and physical activity had no effect on determined Fe levels. The type of commercial diet (wet, dry or combined) given to household cats also had no influence upon Fe status in hair and tissue although males fed exclusively on dry food had a lower Fetestis:Fehair ratio. Hair Fe level was positively correlated with that found in the reproductive tissues (Rs=0.30). This study extends the body of information on Fe distribution in felines, demonstrates the difference between free-ranging and household cats and provides evidence that Fe hair status may, at least partially, reflect the status of this element in the feline reproductive system.
13

Wykorzystanie analizy specjacyjnej mikrosladowych zawartosci metaloidow w badaniach przeplywu wod podziemnych infiltracyjnego ujecia DEBINA w Poznaniu

68%
Siepak M., Przybylek J., Niedzielski P.
Ekologia i Technika
|
2004
|
tom 12
|
nr 1
22-31
14

Stan czystosci wod jeziora Sarcz poddanego antropopresji

68%
Lukasiewicz R., Niedzielski P., Siepak J.
Ekologia i Technika
|
1995
|
tom 03
|
nr 5
23-25
15

Research on heavy metals in Poland

68%
Szyczewski P., Siepak J., Niedzielski P., Sobczynski T.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 5
The analysis of 238 papers published in the Polish Journal of Environmental Studies concerning investigations on heavy metals conducted in the years 1998-2008 suggests a steadily growing interest in the issue. Investigations on the environmental problems in question are carried out by means of more modern research methods and using the most recent analytical equipment. Research on the role of heavy metals and metalloids in the environment concerned analytical and legal problems. Research on the speciation of metals, their toxicity, accumulation, biomagnification, bioindication, migration, removal, phytoremediation and biomonitoring was conducted. The papers published in the Polish Journal of Environmental Studies were divided according to the range of topics mentioned above. At present, the paper is a review compendium and therefore current and important for every reader.
16

Microtrace contents of arsenic, antimony and selenium in surface waters of Pszczewski Landscape Park as a region potentially free from anthropogenic pressure

68%
Niedzielski P., Siepak M., Grabowski K.
Polish Journal of Environmental Studies
|
2002
|
tom 11
|
nr 5
This paper presents results of determination of the total content of arsenic, antimony and selenium in samples of surface water from selected lakes of Pszczewski Landscape Park. The concentrations of arsenic, antimony and selenium determined by the absorption atomic spectrometry method were up to 0.66 ng/ml, 0.62 ng/ml and 0.76 ng/ml, respectively, at the detection limits of 0.04 ng/ml for As, 0.04 ng/ml for Sb and 0.03 ng/ml for Se. The water samples studied revealed low concentrations of the elements of interest relative to the values obtained for the samples from other regions. The determined concentrations of arsenic, antimony and selenium can be interpreted as natural.
17

Occurrence of arsenic, antimony and selenium in surface waters of Drawienski National Park

68%
Niedzielski P., Siepak J., Siepak M., Kraska M.
Polish Journal of Environmental Studies
|
2002
|
tom 11
|
nr 1
This paper reports the results of determinations of total amounts of arsenic, antimony, selenium and macrocomponents in water samples from lakes in Drawieński National Park. The total content of arsenic was up to 0.95 ng/mL, antimony up to 0.53 ng/mL, while selenium was below 0.15 ng/mL, at the limits of detectability of 0.16 ng/mL 0.18 ng/mL and 0.15 ng/mL, respectively. The water samples studied had a relatively low content of the elements determined in comparison to their content in water samples from other regions of Poland.Taking into regard that the samples were collected from an area under special protection, the contents of arsenic, antimony and selenium determined in them can be interpreted as representing the natural level of these elements.
18

Speciation analysis for determinations of arsenic, antimony and selenium in water samples from the Lednickie Lake

68%
Niedzielski P., Siepak J., Kowalczuk Z.
Archiwum Ochrony Środowiska
|
2000
|
tom 26
|
nr 1
19

Atomic absorption spectrometry in determination of arsenic, antimony and selenium in environmental samples

68%
Niedzielski P., Siepak M., Przybylek J., Siepak J.
Polish Journal of Environmental Studies
|
2002
|
tom 11
|
nr 5
This paper reports determination of arsenic, antimony and selenium in different matrices using atomic absorption spectrometry, with atomisation in a graphite tube and with generation of hydrides. The actual state of atomic absorption spectrometry as the method of determining As, Sb and Se is described on the basis of literature data. The effects of interference in determinations by atomic absorption spectrometry, and the problems related to sample preparation to determinations (extraction, mineralisation, concentration) are discussed. The application of flow injection analysis in atomic absorption spectrometry with hydride generation is described. The effectiveness of atomic absorption spectrometry in speciation determinations of arsenic, antimony and selenium applied alone and in combination with chromatographic methods is shown.
20
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NCD layers obtained in RF PE CVD plasma process as an dielectrical chemosensitive material in MIS end ChemFET structures

68%
Guzdek T., Szmidt J., Niedzielski P.
Acta Agrophysica
|
2002
|
tom 80
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