Search Results

You are looking at 11 - 20 of 638 items for :

Clear All
Open access

Jolanta Domańska, Tadeusz Filipek and Monika Kwiecień

organicznych nawadnianych ściekami miejskimi Lu- blina. Zeszyty Problemowe Postępów Nauk Rolniczy ch 437: 299-304. Tarchouna Gharbi L., Merdy P., Lucas Y., 2010. Effects of long- term irrigation with treated wastewater. Part 11: Role of orga- nic carbon on Cu, Pb and Cr behaviour. Applied Geochemi- stry 25: 1711-1721. DO 1:10.1016/j. apgeochem .2010.09.002. Tessier A., Campbell P.G.C., Bisson M., 1979. Sequential extrac- tion procedure for the speciation of particulate trace metals. Analytical Chemistry 51 (7): 844

Open access

E. Rudnik, G. Włoch and A. Czernecka

Abstract

Ni - Sn alloys were electrodeposited from acidic chloride-sulphate solution in potentiostatic and galvanostatic conditions. Cyclic voltammetry and Hull cell were used for the selection of the appropriate deposition potentials and cathodic current densities, respectively. In the potentiostatic conditions (-1.0 - -1.2 V vs. Ag/AgCl) porous deposits (~7-10 wt% Ni) were obtained, while dense coatings (~15-34 wt% Ni) were produced in the galvanostatic conditions (0.5-1.5 A/dm2). In both cases, deposits consisted of β - Sn and Ni3Sn4 phases. Speciation of the bath was also calculated.

Open access

Barbora Micháleková Richveisová, Zuzana Dürešová, Miroslav Horník, Jozef Augustín and Martin Pipíška

.: Tolerance of Arundo donax to heavy metals. Chin. J. Appl. Ecol., 16, 2005, 161-165. HIROSHI, K., HIDEYUKI, I., TOMOYUKI, O.: Mutual separation of metal ions by dithizone extraction-isotachophoresis on the basis of HSAB principle. Analyst, 9, 1994, 723-726. HOAGLAND, D.R.: Optimum nutrient solutions for plants. Science, 52, 1920, 562-564. HORNÍK, M., ŠUŇOVSKÁ, A., PIPÍŠKA, M., GUBIŠOVÁ, M., GUBIŠ, J., AUGUSTÍN, J.: Phytofiltration of Cd and Zn by roots of vascular plants: Effect of metals speciation. Proceedings of

Open access

M. V. Kovalenko and S. Yu. Utevsky

. - Nauka : Leningrad, 1976. - 484 p. - Russian : Лукин E. И. Пиявки. Фауна СССР. Mavarez J., Salazar C. A., Bermingham E. et al. Speciation by hybridization in Heliconius butteflies // Na­ture. - 2006. - 441, N 15. - P. 868-871. Moquin-Tandon A. Monographie de la familledes. Hirudinees. - Paris : J.-B. Chez A. Ailliere, 1846. - 454 p. Nesemann H., E. Neubert. Annelidae, Clitellata: Brachiobdellida, Acanthobdellea, Hirudinea // Süßwasser­fauna von Mitteleuropa / Eds J. Schwoerbel, P. Zwick. - Heidelberg : Spektrum, 1999

Open access

Andrzej Plak, Piotr Bartmiński and Ryszard Dębicki

. Competitive Adsorption of Arsenate and Arsenite on Oxides and Clay Minerals. Soil Sci. Soc. Am. J., 66, 413-421, doi:10.2136/sssaj2002.4130 Hartley W., Dickinson N.M., Riby P., Leese E., Morton J., and Lepp N.W., 2010. Arsenic mobility and speciation in a contaminated urban soil are affected by different methods of green waste compost application. Environ. Pollut., 158, 3560-3570, doi: 10.1016/j.envpol.2010.08.15 Hieltjes A.H.M. and Lijklema L., 1980. Fractionation of inorganic phosphates in calcareous sediments. J. Environ. Qual., 9, 405-407, doi:10.2134/jeq

Open access

Shazia Gul, Alia Naz, Iftikhar Fareed, Abdullah Khan and Muhammad Irshad

. Singh, R.P. & Agrawal, M. (2008). Potential benefits and risks of land application of sewage sludge. Waste Manage. 28, 347–358. DOI: 10.1016/j.wasman.2006.12.010. 4. Castaldi. P., Santona, L. & Melis, P. (2006). Evolution of heavy metals mobility during municipal solid waste composting. Fresen. Environ. Bull. 15(9), 1133–1140. 5. Yobouet, Y.A., Adouby, K., Trokourey, A. & Yao, B. (2010). Cadmium, copper, lead and zinc speciation in contaminated soils. Int. J. Eng. Sci. Tech. 2(5), 802–812. DOI: 10.1080/00103620009370502. 6. Singh. J

Open access

Anna Šuňovská, Miroslav Horník, Jana Marešová, Martin Pipíška and Jozef Augustín

Abstract

A hydroponic study involving lettuce plants (Lactuca sativa L.) as a leafy vegetable was conducted to evaluate the 137Cs uptake and translocation in plant tissues in dependence on the presence or absence of K+ or/and NH4 + ions in cultivation media according to Hoagland (HM) during 8 d plants growth under hydroponic conditions. Significant increase of the 137Cs+ uptake by lettuce plants and the decrease of 137Cs+ translocation efficiency from roots to leaves were observed in 50 % HM deficient in K+ and NH4 + ions. Speciation analysis using Visual MINTEQ program showed that at micromolar concentration of CsCl (5 μmol/dm3) in 50 % HM at pH 6.0 and 25 °C, cesium was occurred practically only in the free cationic Cs+ form − 98.8 %, with minor proportions of other cesium species: CsCl − 0.4 %, CsNO3 − 0.4 %, and CsSO4 - − 0.4 %. Surplus of Cl-, NO3 - and SO4 2- ions in HM causes the increase of proportions of the cesium species CsCl, CsNO3 and CsSO4 -, respectively at the expense of bioavailable Cs+ form. Radiocesium 137Cs taken up via roots was removed from lettuce leaves with high efficiency by boiling in diluted NaCl solution. At ambient temperature the extraction of 137Cs with diluted acetic acid was concentration and time dependent process, and was succeeded by leakage of tissue components absorbing at 260 nm. These findings are important for the risk assessment of radiocesium entry into the food chain via contaminated leafy vegetable.

Open access

Bartosz Nowak, Katarzyna Korszun-Kłak and Urszula Zielonka

Environment , 408, 373–381. [17] Liu, S., Nadim, F., Perkins, C.H., Carley, R., Hoag, G., Lin, Y. & Chen, L. (2002). Atmospheric mercury monitoring survey in Beijing, China. Chemosphere , 48, 97–107. [18] Gabriel, M.C., Willason, D.G., Brooks, S. & Lindberg, S. (2005). Atmospheric speciation of mercury in two contrasting Southeastern US airsheds, Atmospheric Environment, 39, 4947–4958. [19] Lynam, M.M. & Keeler, G.J. (2005a). Artifacts associated with the measurement of particulate mercury in an urban environment: the influence of elevated ozone concentrations

Open access

Zuzana Dürešová, Anna Šuňovská, Miroslav Horník, Martin Pipíška, Marcela Gubišová, Jozef Gubiš and Juraj Lesný

.C., BAJPAI, O., SINGH, N.: Energy crops in sustainable phytoremediation. Renew. Sust. Energ. Rev., 54, 2016, 58-73. POŁEĆ-PAWLAK, K., RUZIK, R., ABRAMSKI, K., CIURZYŃSKA, M., GAWROŃSKA, H.: Cadmium speciation in Arabidopsis thaliana as a strategy to study metal accumulation system in plants. Anal. Chim. Acta, 540, 2005, 61-70. QUEZADA-HINOJOSA, R., FÖLLMI, K.B., GILLET, F., MATERA, V.: Cadmium accumulation in six common plant species associated with soils containing high geogenic cadmium concentrations at Le Gurnigel, Swiss Jura Mountains. Catena, 124, 2015

Open access

Aleksandra Golob, Mateja Germ, Ivan Kreft, Igor Zelnik, Urška Kristan and Vekoslava Stibilj

screening the elemental composition of buckwheat grain by micro- PIXE. Journal of Agricultural and Food Chemistry 59, 1275-1280. Pyrzynska, K., 2009: Selenium speciation in enriched vegetables. Food Chemistry 114, 1183-1191. Schreiber, U., Kühl, M., Klimant, I., Reising, H., 1996: Measurement of chlorophyll fl uorescence within leaves using modifi ed PAM fl uorometer with a fi ber-optic microprobe. Photosynthesis Research 47, 103-109. Smrkolj, P., Stibilj, V., 2004: Determination of selenium in vegetables by hydride