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    Wyświetlanie 1-5 z 5
    Tytuł:
    Platinum uptake by mustard (Sinapis alba L.) and maize (Zea mays L.) plants
    Autorzy:
    Kowalska, J.
    Asztemborska, M.
    Bystrzejewska-Piotrowska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/147295.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    platinum
    plant samples
    voltammetry
    mass spectrometry with inductively coupled plasma (ICP-MS)
    Opis:
    The ability of platinum uptake by hydroponically cultivated plants - Indian mustard (Sinapis alba L.) and Anawa maize (Zea mays L.) - was investigated. The efficiency of the transport of platinum compounds from the roots to above ground organs was estimated. For platinum determination in plant samples, digested in closed system with microwave energy, very sensitive analytical methods were applied - adsorptive stripping voltammetry (AdSV) and mass spectrometry with inductively coupled plasma (ICP-MS). For validation of the obtained results the recovery of platinum was examined. The accumulation factors (AF) of platinum: more then 800 and 400 for roots of Indian mustard and Anawa maize, respectively and about 90 and 30 for above ground organs of both species were found.
    Źródło:
    Nukleonika; 2004, 49,suppl.1; 31-34
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odporność zapraw z udziałem popiołów lotnych z kotłów fluidalnych i konwencjonalnych na korozję kwasową
    The resistance of mortars with fluidized beds boiler fly ashes and conventional fly ashes to acid corrosion
    Autorzy:
    Janowska-Renkas, E.
    Kowalska, J.
    Kaliciak, A.
    Janus, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/131481.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
    Tematy:
    popioły lotne ze spalania w kotłach fluidalnych
    popioły lotne z kotłów konwencjonalnych
    korozja kwasowa
    trwałość zapraw
    fly ashes
    fluidized boiler
    conventional boiler
    acid corrosion
    durability of cement mortars
    Opis:
    This paper presents the results of research undertaken to determine the impact of the aggressive environment of acid corrosion on the durability of cement mortars with the participation of fluidized beds boiler fly ashes and conventional fly ashes used separately and in the form of mixtures. The beneficial effect of fluidized beds boiler fly ashes on the physical properties of cement mortars has been shown, i.e. reduction of the contraction, decrease of weight loss and reduction of the destruction of mortars in acid corrosion. This effect was especially beneficial for mortars containing higher (45% by weight) content of fluidized fly ashes, used separately and in the form of mixtures, regardless of the aggressiveness of the environment (1%, 3% and 5% HCl solution).
    Źródło:
    Roczniki Inżynierii Budowlanej; 2016, 16; 101-109
    1505-8425
    Pojawia się w:
    Roczniki Inżynierii Budowlanej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Platinum bioaccumulation by mustard plants (Sinapis alba L.)
    Autorzy:
    Hawieńczyk, M.
    Bystrzejewska-Piotrowska, G.
    Kowalska, J.
    Asztemborska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147788.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bioaccumulation of Pt
    biomonitoring
    bioremediation
    mustard plants
    platinum
    Opis:
    The ability of hydroponically cultivated Indian mustard plants (Sinapis alba L.) to accumulate platinum was investigated. The Pt-bioaccumulation in leaves, stem and shoots of plants growing for 2 and 4 weeks at Pt-concentration of 50 and 500 ěg/L was compared. The relation between dry and fresh weight was also estimated. Adsorptive stripping voltammetry (AdSV) and mass spectrometry with inductively coupled plasma (ICP-MS) were applied for determination of Pt. Increasing Pt-concentration from 50 to 500 ěg/L in the medium causes: (1) reduction of the root tissue hydration level at unchanged modification in aboveground parts of the plants and (2) decrease of the Pt transfer factor (TF) for roots and increase for leaves and stem. Duration of the culture influenced on Pt-accumulation in roots and in aboveground organs of mustard plants. Transfer factor for Pt between 560 and 1600 makes Indian mustard plants one at Pt-hyperaccumulators. Distribution of Pt-bioaccumulation in the plant organs may be useful for biomonitoring of platinum in the environment.
    Źródło:
    Nukleonika; 2005, 50,suppl.1; 59-61
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary study of platinum accumulation in the fruitbodies of a model fungal species: king oyster mushroom (Pleurotus eryngii)
    Autorzy:
    Urban, P.
    Bazała, M.
    Asztemborska, M.
    Manjón, J.
    Kowalska, J.
    Bystrzejewska-Piotrowska, G.
    Pianka, D.
    Stęborowski, R.
    Kuthan, R. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/147784.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bioaccumulation
    bioremediation
    fungi
    heavy metals
    mushrooms
    mycoextraction
    platinum
    Opis:
    A model species of saprophytic fungus, king oyster mushroom (Pleurotus eryngii), was cultivated on barley substrate supplied with [Pt(NH3)4](NO3)2, under well defined conditions. The samples of the collected fruiting bodies were digested and analyzed for total platinum content by means of ICP-MS. The results proved that platinum is not accumulated in the fruitbodies of Pleurotus eryngii for a wide range of Pt concentrations in the culture substrate (100 1000 ppb Pt in 50 ml of water solution added to ca. 450 g of hydrated barley seeds per container). Observable levels of Pt were only found in the fruitbodies obtained from the medium contaminated with 10000 ppb (10 ppm) platinum solution. This demonstrates significant difference in the effectiveness of platinum extraction in fungi and plants, which are capable to accumulate platinum even when supplied at lower concentration (<500 ppb). It also shows different physiological pathways of platinum and other elements which are easily accumulated in the fruitbodies of the same species.
    Źródło:
    Nukleonika; 2005, 50,suppl.1; 63-67
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bottom Deposits of Stratified, Seepage, Urban Lake (On the Example of Tyrsko Lake, Poland) as a Factor Potentially Shaping Lake Water Quality
    Autorzy:
    Augustyniak, R.
    Neugebauer, M.
    Kowalska, J.
    Szymański, D.
    Wiśniewski, G.
    Filipkowska, Z.
    Grochowska, J.
    Łopata, M.
    Parszuto, K.
    Tandyrak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/125198.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    urban lake
    phosphorus
    bottom sediment
    internal loading
    Opis:
    The object of the study was Tyrsko Lake (area 18.6 ha, max. depth 30.4 m), located in the western part of Olsztyn (Olsztyn Lakeland). This lake is one of the clear water lakes in Olsztyn, but the progressive deterioration of water quality has been observed during recent years. The phosphorus concentration in the water-sediment interface, phosphorus fractions quantity and the amount of components which can bind this element was investigated in the upper (0–5 cm) layer of deposits. The aim of study was to analyze the potential influence of bottom sediment on the lake water quality. The obtained results revealed that the bottom sediment of Tyrsko Lake can be classified as mixed, silica-organic type, with a relatively high content of iron (over 4% Fe in d.w.). The total phosphorus content was ca. 3.5 mg P g,-1 d.w. on average. Phosphorus in the bottom sediment was bound mainly with organic matter (NaOH-nrP fraction), which had over 50% share in TP. Highly mobile fractions (NH4-Cl-P and BD-P) together only included ca. 5% to 7% TP. The obtained results show that the bottom sediment of Tyrsko Lake can bind phosphorus quite effectively. The calculated internal mineral phosphorus loading during summer stagnation period was 10.9 kg and it was lower that the assessed annual external phosphorus load (22.6 kg). The assessed annual phosphorus loading from both sources was still lower than the critical load according to Vollenweider criteria. However, due to the fact that the internal loading phenomenon is occurring in the lake, it should be taken into consideration that the lake water quality can deteriorate gradually during the longer time perspective. These findings should be accounted for in the future if the potential protection and restoration procedures will be developed.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 5; 55-62
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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