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Wyświetlanie 1-4 z 4
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
Autorzy:
Gadomska, K
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/839605.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Annals of Parasitology; 1997, 43, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
PRZEŻYWALNOŚĆ LARW NIPPOSTRONGYLUS BRASILIENSIS (NEMATODA) W ROZTWORACH SUBSTANCJI TOKSYCZNYCH
Autorzy:
Gadomska, K.
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/2148897.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Wiadomości Parazytologiczne; 1997, 43, 1; 79-88
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevention of Hydrosphere Contamination with Electroplating Solutions through Electromembrane Processes of Regeneration
Autorzy:
Serdiuk, Vasyl
Sklabinskyi, Vsevolod
Bolshanina, Svetlana
Ableyev, Alexey
Dychenko, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/124544.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
electrolysis
electroplating solution
cation exchange membrane
cadmium cation
zinc cation
forced mixing
Opis:
The work studies the process of Сd2+ and Zn2+ cations transfer through a RALEX®CM-PES 11–66 cation-exchange membrane and the cations reduction as metals on the cathodes at the cathode chambers of the electrochemical units with a view to prevent the hydrosphere contamination with the electroplating solutions. Electrolysis of the solutions that imitated the possible composition of the passivating baths contained 50 g/l sodium dichromate, 10 g/l sulfuric acid and impurity ions of Сd2+ and Zn2+ in various concentrations. The designed passivation solutions with certain amount of impurity ions in the colour solution were forcibly mixed. The impact of the impurity ions concentration in the colour solution and of a forced mixing on the metal reduction was studied. Regularity in the increased metal reduction dependent on the metal concentration was found and the conditions favouring the ion migration through the cation-exchange membrane due to forced mixing were defined.
Źródło:
Journal of Ecological Engineering; 2020, 21, 4; 61-69
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil profile as a natural membrane for heavy metals from wastewater
Autorzy:
Wlodarczyk, T.
Witkowska-Walczak, B.
Majewska, U.
Powiązania:
https://bibliotekanauki.pl/articles/24215.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil profile
natural membrane
heavy metal
waste water
zinc
cadmium
irrigation
soil solution
zinc concentration
cadmium concentration
industrial waste water
toxicity
Opis:
The effect of intensive irrigation with wastewater on the zinc (Zn) and cadmium (Cd) concentration in soil solution was investigated. The experiment was parallel conducted on two soil profiles. The soil microcosms were watered with purified wastewater and purified wastewater with an the addition of zinc and cadmium. The results indicate clearly that neither intensive overhead irrigation of the soil nor its flooding with these wastewater and exceeded sorptive capacity. The application of treated wastewater and wastewater with heavy metals addition did not appear to pose a threat to the natural environment. In all the cases under analysis, zinc and cadmium concentrations in the soil solution were several-fold lower than the permissible levels.
Źródło:
International Agrophysics; 2012, 26, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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