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Wyszukujesz frazę "heavy metals (Pb, Cd, Ni)" wg kryterium: Temat

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    Tytuł:
    Zawartość związków zakwaszających i metali ciężkich w korze martwicowej sosny pospolitej (Pinus sylvestris L) oraz w glebie małych lasów w Skawinie i Krakowie
    Acidifying components and heavy metal concentrations in pine bark (Pinus sylvestris L) and topsoil in small forest ecosystem in Skawina anf Kraków
    Autorzy:
    Marko-Worłowska, M.
    Wątor, G.
    Kozik, R.
    Łaciak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/127285.pdf
    Data publikacji:
    2010
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    zanieczyszczenia
    związki zakwaszające
    metale ciężkie (Pb, Cd, Ni)
    kora martwicowa
    gleba
    pollution
    heavy metals (Pb, Cd, Ni)
    acidifying components
    necrotic bark
    topsoil
    Opis:
    Do oceny zanieczyszczenia środowiska związkami zakwaszającymi oraz metalami Pb, Zn i Ni zbadano korę martwicową Pinus sylvestris L, oraz glebę, na której te sosny rosły. Badania prowadzono w strefie ekotonowej małych lasów leżących w odległości ok. 5 m od ruchliwej ulicy i 300 i 700 m od huty aluminium i elektrowni (stanowisko I) oraz ok. 1 km od obwodnicy autostradowej i 5,5 i 5,7 km od ww. emitorów przemysłowych (stanowisko II). Zbadano pH kory, a także zawartość Pb, Cd i Ni od strony najczęściej wiejących w Polsce wiatrów (zachód) i od strony przeciwnej oraz pH i zawartość ww. metali w glebie. Wyniki wskazują, że zarówno kora sosny, jak i gleba są dobrymi wskaźnikami zanieczyszczenia związkami zakwaszającymi i badaymi metalami. Na stanowisku I stwierdzono wyższą kwasowość kory oraz większe stężenie Pb i Cd niż na stanowisku II. Gleba stanowiska bardziej oddalonego od emitorów przemysłowych wykazała większe zakwaszenie i większą zawartość Ni.
    In the presented paper the pine bark, superficial layer of the soil - topsoil (to 10 cm deep) from pine’s surroundings were used as the accumulative indicators. In order to evaluate the impact of pollution of environment by heavy metals and by acidifying components a few chosen physicochemical parameters of pine bark and the topsoil of the two small forests (Locality I and Locality II) were detected. It was detected that the reaction of the soils of both habitats was less acidic than pine bark, whereas concentration of Cd, Pb and Ni was higher in the forest soil. Therefore pine bark is better accumulator of acidifying components than soil. Locality situated nearer Power plant and Aluminium smelter in Skawina indicated higher acidity of bark and higher concentration of Pb, Cd, than locality situated in Krakow.
    Źródło:
    Proceedings of ECOpole; 2010, 4, 2; 459-463
    1898-617X
    2084-4557
    Pojawia się w:
    Proceedings of ECOpole
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heavy metal toxicity - metabolism, absorption, distribution, excretion and mechanism of toxicity for each of the metals
    Autorzy:
    Magelsir, Hassan Mohamed Ihmed
    Powiązania:
    https://bibliotekanauki.pl/articles/1119309.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Cd
    Cu
    Fe
    Heavy metals
    Hg
    Ni
    Pb
    Zn
    growth
    nutrients
    proteins
    uptake
    Opis:
    The main threats to human health from heavy metals are associated with exposure to lead, cadmium, mercury and arsenic. These metals have been extensively studied and their effects on human health regularly reviewed by international bodies such as the WHO. Heavy metals have been used by humans for thousands of years. Although several adverse health effects of heavy metals have been known for a long time, exposure to heavy metals continues, and is even increasing in some parts of the world, in particular, in less developed countries. However, over the last 100 years, emissions have declined in most developed countries. Cadmium compounds, the exception, are currently mainly used in re-chargeable nickel-cadmium batteries. Cadmium emissions have increased dramatically during the 20th century, one reason being that cadmium-containing products are rarely re-cycled, but often dumped together with household waste. Cigarette smoking is a major source of cadmium exposure. In non-smokers, food is the most important source of cadmium exposure. Recent data indicate that adverse health effects of cadmium exposure may occur at lower exposure levels than previously anticipated, primarily in the form of kidney damage, but possibly also in bone effects and fractures. Many individuals in Europe already exceed the recommended exposure levels and the margin is very narrow for large groups. Therefore, measures should be taken to reduce cadmium exposure in the general population in order to minimize the risk of adverse health effects. The general population is primarily exposed to mercury via food, fish being a major source of methyl mercury exposure, as is dental amalgam. The general population, however, does not face a significant health risk from methyl mercury, although certain groups with high fish consumption may attain blood levels associated with a low risk of neurological damage to adults. Since there is a risk to the fetus in particular, pregnant women should avoid a high intake of certain fish, such as shark, swordfish and tuna; fish (such as pike, walleye and bass) taken from polluted fresh waters should especially be avoided. There has been a debate on the safety of dental amalgams and claims have been made that mercury from amalgam may cause a variety of diseases. However, there are no studies so far that have been able to show any associations between amalgam fillings and ill health. The general population is exposed to lead from air and food in roughly equal proportions. During the last century, lead emissions to ambient air caused considerable pollution, mainly due to lead emissions from petrol. Children are particularly susceptible to lead exposure due to high gastrointestinal uptake and the permeable blood-brain barrier. Blood levels in children should be reduced below the levels so far considered acceptable as recent data indicates that lead may hold neurotoxic effects at lower levels of exposure than previously anticipated. Although lead in petrol has dramatically decreased over the last decades, thereby reducing environmental exposure, phasing out any remaining uses of lead additives in motor fuels should be encouraged. The use of lead-based paints should also be abandoned, and lead should not be used in food containers. In particular, the public should be aware of glazed food containers, which may leach lead into food. Exposure to arsenic is mainly via intake of food and drinking water, food being the most important source in most populations. Long-term exposure to arsenic in drinking water is mainly related to increased risks of skin cancer, but also enhanced risk of some other cancers, as well as other skin lesions such as hyperkeratosis and pigmentation changes. Occupational exposure to arsenic, primarily by inhalation, is causally associated with lung cancer. Clear exposure-response relationships and high risks have been observed.
    Źródło:
    World News of Natural Sciences; 2016, 4; 20-32
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metale w środowisku Cz. II. Wpływ metali ciężkich na rośliny
    Metals in the environment Part II. Effect of heavy metals on plants
    Autorzy:
    Gruca-Królikowska, S.
    Wacławek, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/106435.pdf
    Data publikacji:
    2006
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    metale ciężkie
    Cd
    Pb
    Ni
    Cu
    Zn
    warzywa
    rośliny
    mechanizm działania metali na rośliny
    heavy metals
    vegetables
    plants
    mechanism of metal action on plants
    Opis:
    Opisano wpływ metali ciężkich na rośliny, zwłaszcza warzywa. Przedstawiono również mikroskopowy mechanizm tego zjawiska. Problem ten przeanalizowano też w zależności od natury metalu: Cd, Pb, Ni, Cu i Zn.
    Effect of heavy metals on plants, especially vegetables has been described, including microscopic mechanisms of the impact. The problem has been also analysed with relation to the kind of metal: Cd, Pb, Ni, Cu and Zn.
    Źródło:
    Chemistry-Didactics-Ecology-Metrology; 2006, 11, 1-2; 41-54
    2084-4506
    Pojawia się w:
    Chemistry-Didactics-Ecology-Metrology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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