Wyniki wyszukiwania

1

Determination of lead and cadmium in biological material by graphite furnace atomic absorption spectrometry method

100%

Szkoda J., Zmudzki J.

Bulletin of the Veterinary Institute in Puławy

|

2005

|

tom 49

|

nr 1

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Comparative analysis of trace elements concentrations in dialysis fluids before and after dialyzer

86%

Dlugaszek M., Karbowiak P., Szopa M.

Journal of Elementology

|

2009

|

tom 14

|

nr 1

43-53

Disturbances of mineral metabolism are one of the many complications observed in patients with renal failure. Fluids used in dialysotherapy may introduce elements to a patient’s body. On the other hand, some trace elements may be removed. Dialysis fluids contain chlorides of calcium (Ca), magnesium (Mg), sodium (Na), and potassium (K), but they may also be contaminated by toxic metals. In the first part of our work the amounts of Mg, Ca, zinc (Zn), and iron (Fe) were determined in samples of hemodialysis fluids just before and after a dialyzer. The concentration of copper (Cu), aluminium (Al), lead (Pb), cadmium (Cd), and chromium (Cr) were measured by the atomic absorption spectrometry method (AAS) in a graphite furnace (GFAAS) in the same dialysates. The average concentration of Cu in dialysis fluids before and after dialyzer was 13.51 and 10.51 μg L-1 respectively, Al – 8.72 and 7.88 μg L-1, Pb – 24.03 and 22.81 μg L-1, Cd – 1.09 and 1.07 μg L-1, Cr – 5.91 and 6.28 μg L-1. Except for Cr (p < 0.05), the comparison of concentrations of all the measured elements before and after haemodialysis did not show any significant differences. Positive significant correlations between the element concentration before and after a dialyzer were found for Al (r = 0.33030 and Cd (r = 0.7496). In the samples of dialysis fluids of patients who had been dialyzed for less than one year, a negative balance of elements was found, except Pb. The balance was positive in patients who had been dialyzed for more than a year. Our findings also show statistically significant negative correlation between duration of dialysis treatments and Al concentration. Statistically, the examined dialysis fluids seem to be safe for dialyzed patients. However, individual data show that it is important to control elemental levels in dialyzates used for many years to prevent some complications in these patients.

3

The effect of alkyd resin on the stability of binding (3-aminopropyl) triethoxysilane with cellulose and wood

86%

Ratajczak I., Rzepecka E., Wozniak M., Szentner K., Mazela B.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

|

2015

|

tom 58

|

nr 195

Experiments were conducted using (3-aminopropyl) triethoxysilane (APTES) and alkyd resin in order to improve the reactivity of wood protective preparations with wood. The results presented concern a structural analysis (FTIR, AAS) of modified cellulose and wood, both after chemical reactions with silanes and after water extraction. The FTIR spectrum of pine wood powder was presented after a reaction with organosilane preparations and with the addition of alkyd resin, and then after water extraction. The FTIR analysis detected vibrations of Si-C, Si-O and N-H groups, indicating permanent bonding with the organosilane preparation. The presence of bands at 710 cm-1 (characteristic of vibrations of the silicon bond with an atom of carbon and oxygen) and at 1600-1580 cm-1 (characteristic of deformation vibrations of N–H coming from the amine group) confirmed the reactivity of these preparations with the wood. The results of atomic absorption spectrometry confirmed the stability of the organosilane bonds with the cellulose and the wood.

4

The influence of cigarette smoking on the occurrence of some metals in teeth

86%

Malara P., Kwapulinski J., Drugacz J.

Polish Journal of Environmental Studies

|

2004

|

tom 13

|

nr Suppl.2, Part 1

The aim of this study was to find out if cigarette smoking influences the Cd, Cr, Cu, Fe, Mn, Pb, Zn, K, Na, Ca and Mg contents and mutual relationships between these elements in teeth. The content of elements was determined by means of atomic absorption spectrometry in the smokers' and non-smokers' teeth. It was concluded that the cigarette smoking results in the significant increase of Cd, Zn and Cu contents in teeth and that the supply of heavy metals from cigarette smoke to human organism influences the mutual relationships between the elements in a tooth structure.

5

The influence of lead on occurrence of some essential elements in teeth

86%

Malara P., Kwapulinski J., Malara B.

Acta Toxicologica

|

2004

|

tom 12

|

nr 1

6

Determination of Fe3plus, Cu2plus, Zn2plus and Mn2plus ions content in some fruits of medicinal plants

86%

Sowa I., Blicharska E., Kocjan R.

Herba Polonica

|

2003

|

tom 49

|

nr 3-4

In the Aroniae fructus, Rubi idaei fructus, Sambuca fructiis, Rosae fructus, Sorbí fruetus, Pyriis malus fructus, Foeniculi fructus, Pruni spinosae fructus and Myrtilli fructus, the contents of Fe3+, Cu2+, Zn2+ and Mn2+ ions were determined by the flame atomic absorption spectrometry (MS) and ion chromatography (IC). It was found that the quantities of the examined ions differ and vary in the investigated species. The amounts were: Fe3+ 20.99 - 1084.3 mg/kg; Cu2+ 2.44 - 13.58 mg/kg; Zn2+ 8.19 - 139.11 mg/kg and Mn2+ 4.88 - 217.32 mg/kg of dry mass.

7

Total content of arsenic, antimony and selenium in groundwater samples from Western Poland

86%

Niedzielski P., Siepak J., Siepak M.

Polish Journal of Environmental Studies

|

2001

|

tom 10

|

nr 5

This paper presents statistical analysis of results of determination of the total content of arsenic, antimony, selenium and microcomponents in 49 samples of groundwater from an area of western Poland (Wielkopolska). The total content of arsenic reached up to 3.00 ng/ml, antimony 1.25 ng/ml, selenium < 0.15 ng/ml, at detection limits of 0.16 ng/ml for As, 0.18 ng/ml for Sb and 0.15 ng/ml for Se. The samples showed low values of the content of the elements considered relative to the values obtained for water samples from other regions. As the groundwater samples were collected from isolated water bearing horizons, the values determined for them could be treated as geogenic.

8

Trends in lead and cadmium content in soils adjacent to European highway E30

72%

Deska J., Bombik A., Marciniuk-Kluska A., Rymuza K.

Polish Journal of Environmental Studies

|

2011

|

tom 20

|

nr 2

Results of lead and cadmium contents in soil adjacent to European highway E30 in the East of Poland were presented in the study. Soil samples were collected at three distances: 0, 50, and 100 m from the track, and at two depths: 5-15 cm and 35-45 cm. Soil pH, content of silt and clay particles, organic matter content, types of underlaying rock and land use methods were tested. The total contents of lead and cadmium were analyzed by AAS method. Lead content ranged from 9.70 mg・kg⁻¹ to 155.75 mg・kg⁻¹ of dry matter (on average 103.38 mg・kg⁻¹) in the strip directly adjacent to the roadside. The values were significantly larger than those from further distances. The lead content in soils beyond the road strip did not exceed the limit value of 100 mg・kg⁻¹ in soil used for farming purposes. The cadmium content, however, ranged from 0.016 to 0.909 mg・kg⁻¹, and it did not significantly depended on the distance from the road. The largest cadmium content, significantly different from others, in soils located to the east of the industrial district of Siedlce was proved, but the content did not exceed the limit of 1 mg・kg⁻¹ in soil of agricultural area. The study was a part of complex research concerning the environmental monitoring that was conducted by co-authors of the paper.

9

A reaction of [3-(2-aminoethylamino)propyl]trimethoxysilane with wood and cellulose – chemical analyses

72%

Wozniak M., Ratajczak I.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2020

|

tom 109

10

Analysis of selected surface water components in the town of Siedlce, Poland

72%

Kluska M., Marciniuk-Kluska A.

Oceanological and Hydrobiological Studies

|

2014

|

tom 43

|

nr 1

11

Diagnostic values of calcium and magnesium forms determined in human serum and saliva

72%

Andrusishina I. N.

Journal of Elementology

|

2010

|

tom 15

|

nr 3

425-433

Calcium and magnesium are known to be necessary for the normal function of various systems in animal and human organisms. There are many diseases caused by abnormal concentration of electrolytes, e.g. arterial hypertension or nervous system diseases such as multiple sclerosis, Mb. Alzheimer or Mb. Parkinson. The mechanisms of homeostasis indicate only the ionized forms of these elements. It is known that ionized calcium serves as an endocellular intermediary in action of enzymes and hormones in cells. Therefore, it is very important to define levels of total and ionized forms of Ca2+ and Mg2+ in blood serum and saliva by the method of atomic absorption spectrometry and to show their diagnostic value for various pathological conditions of a human body. The 39 persons, aged 21 to 47 years take part in these investigations. The results of determinations of calcium and magnesium forms present in human serum and saliva, representing physiological states are presented. The age and daily fluctuations of Ca2+ and Mg2+ content in serum and saliva were studied by atomic absorption spectrometry. The levels of non albumin forms of these elements were found by FAAS. The significance of determination of calcium and magnesium levels in serum and saliva under various pathological conditions (arterial hypertension and osteoporosis) was shown.

12

Soil pollution with heavy metals in industrial and agricultural areas: a case study of Olkusz district

72%

Miskowiec P., Laptas A., Zieba K.

Journal of Elementology

|

2015

|

tom 20

|

nr 2

Soil contamination of areas covered by industrial plants and farms is one of the major environmental problems whose weight is underestimated in Poland and Europe. Such regions are usually not as exposed to direct pollution as highly urbanized industrial areas. On the other hand, they are usually less strictly monitored than protected areas. The District of Olkusz, an example of such a region, is characterized by well-developed agriculture, regressing local industry and growing tourism industry. However, it borders with Silesia, a heavily industrized area. The study reports the condition of arable soils in Olkusz District in terms of their contamination with lead, cadmium, zinc and copper. The atomic absorption spectrometry (AAS) method was used to determine the concentrations of the metallic elements. The parameters like pH, content of the clay fraction and content of organic matter have been also taken in consideration to assess the bioavailability of the metals. The analytical results showed that, despite the decreasing impact of the local industry, levels of concentration of all the studied metals are significantly higher than their average concentration in Polish soils. Moreover, all the calculated Pearson correlation coefficients between concentrations of the metals were above 0.9, which means they correlate each other strongly. The impact of the local pollutants (mainly Bukowno smelter) in connection with the proximity of the Silesia and the high vulnerability for contamination of the soils precludes agricultural use of the ground in at least half of the cases.

13

Correlations between some elements in hair of healthy controls, mentally handicapped, psychiatric patients and somatic patients determined using atomic absorption spectrometry

72%

Kimak K.

Polish Journal of Environmental Studies

|

2004

|

tom 13

|

nr Suppl.2, Part 1

The study of content of K, Mg, Ca, Na, Zn, Cu, Fe, Li, and Pb in human hair was carried out on 300 individuals in the years 1996-2002. The patients were from Lublin, Zamość, Łabunie, Krasnystaw, Ostrów Krupski, and Zwierzyniec. The samples of hair to be examined for the content of Mg, K, Na, Zn, Cu, Fe, Li, and Pb were collected from 79 healthy controls, 98 mentally handicapped, 81 psychiatric patients and 42 somatic patients. The content of particular elements in hair was determined using atomic absorption spectometer type AAS-3 (Carl Zeiss), attached to a microcomputer type 113 MPC/38 C and Spectr AA 880 by Varian. The results of the study of hair revealed the positive correlation between Mg and Pb (Rs=0,49, p=0,000024) and between K and Na in healthy controls. Negative correlation was revealed between Mg and K in healthy controls and between Mg and Ca in all studied patients.

14

Reactivity of (3-aminopropyl)trimethoxysilane with cellulose

72%

Wozniak M., Ratajczak I.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2020

|

tom 109

15

Chromium in food products

72%

Sykula-Zajac A., Pawlak A.

Biotechnology and Food Science

|

2012

|

tom 76

|

nr 1

16

Histochemical changes in the testes of lead induced experimental rats

72%

Chowdhury A. R., Rao R. V., Gautam A. K.

Folia Histochemica et Cytobiologica

|

1986

|

tom 24

|

nr 3

17

Selected microelements [Cr, Zn, Cu, Mn, Fe, Ni] in slimming preparations

72%

Bloniarz J., Zareba S.

Roczniki Państwowego Zakładu Higieny

|

2007

|

tom 58

|

nr 1

Concerning the etiopathogenesis, one can speak about the following types of obesity: primary - nutritional, occurring as a result of the joint action of genetic and environmental factors, and secondary obesity - which is a symptom of e.g. metabolic diseases. It has been found out that metabolism of carbohydrates and fats in human organism is connected with some microelements, and the occurrence of obesity may indirectly be connected with the disturbances of homeostasis. The purpose of this study was determination of the content of chromium, zinc, copper, manganese, iron and nickel (elements that are involved in the processes mentioned above) in slimming preparations: Bio C.L.A., Bioslank, Chudeus-syt, Fat Burner, Slim Trio. The samples were mineralized at 450°C, and the determination of elements was performed using the absorption atomic spectrometry. The determined amounts of the examined elements may be regarded as the complementary daily demand of the organism for those elements.

18

The determination of content of selenium in natural fruit juices by spectral methods

72%

Gawloska-Kamocka A.

Roczniki Państwowego Zakładu Higieny

|

2008

|

tom 59

|

nr 2

The aim of this study was the evaluation of the content of selenium in natural fruit juices. In this study, the author determined trace quantities of selenium in fruit juices by three independent methods: atomic absorption spectrometry (AAS), spectrophotometry (UV-VIS) and spectrofluorometry (SF). None of the analysed samples contained elevated levels of selenium. Selenium content in the analysed samples was in the range of 0.46 µg/l - 0.94 µg/l average 0.65 µg/l. The level of selenium in any of the analysed samples of fruit juices did not exceed the WHO recommended level of 0.010 mg/ for drinking water.

19

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

72%

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.

20

Evaluation of metal levels of drinking waters from the Tokat-Black Sea Region of Turkey

72%

Tuzen M., Soylak M.

Polish Journal of Environmental Studies

|

2006

|

tom 15

|

nr 6

The concentrations of chromium, nickel, copper, manganese, zinc, iron, cobalt and aluminum ions in drinking waters from eight sites of Tokat, Turkey, were determined by atomic absorption spectrometry. The values found the present work for the heavy metal contents of the drinking water samples of Tokat, Turkey were below the maximum tolerable limits set by the World Health Organisation (WHO) and the Water Pollution Control Regulation of the Turkish authorities.

Ograniczanie wyników

Determination of lead and cadmium in biological material by graphite furnace atomic absorption spectrometry method

Comparative analysis of trace elements concentrations in dialysis fluids before and after dialyzer

The effect of alkyd resin on the stability of binding (3-aminopropyl) triethoxysilane with cellulose and wood

The influence of cigarette smoking on the occurrence of some metals in teeth