Search Results - "Zaranyika, Mark F."

Dissipation of chlortetracycline in the aquatic environment: Characterization in terms of a generalized multiphase pseudo–zero‐order rate law by Zaranyika, Mark F., Dzomba, Pamhidzai

“…The kinetics of the dissipation of chlortetracycline in the aquatic environment was studied over a period of 90 days using microcosm experiments and distilled…”
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Aquatic bioaccessibility of tetracycline antibiotics to higher fauna: Prediction based on the water-column/sediment partition coefficient by Zaranyika, Mark F., Dzomba, Pamhidzai

“…Tetracycline drugs, extensively used as human and veterinary broad spectrum antibiotics, enter surface and drinking water sources through runoff and seepage…”
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Speciation and persistence of doxycycline in the aquatic environment: Characterization in terms of steady state kinetics by Zaranyika, Mark F., Dzomba, Pamhidzai, Kugara, Jameson

“…The aim of the present work was to establish the kinetics for the degradation of doxycycline in the aquatic environment with a view to arriving at a kinetic…”
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Degradation kinetics of DDT in tropical soils: A proposed multi-phase zero order kinetic model that takes into account evaporation, hydrolysis, photolysis, microbial degradation and adsorption by soil particulates by Zaranyika, Mark F., Matimati, Edmore, Mushonga, Paul

“…•Speciation of DDT in tropical soils characterized.•Degradation of DDT in tropical soils is mainly microbial.•Degradation follows multi-phase zero order…”
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Departure from local thermal equilibrium during ICP-AES and FAES: Characterization in terms of collisional radiative recombination activation energy by Zaranyika, Mark F., Mahamadi, Courtie

“…A simplified rate model is presented showing that when analytes are determined by atomic spectroscopy first in the absence, and then in the presence, of easily…”
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Degradation of tetracycline in tropical river ecosystems: generation and dissipation of metabolites; kinetic and thermodynamic parameters by Dzomba, Pamhidzai, Zaranyika, Mark F.

“…The fate and degradation of tetracycline (TC) in tropical river ecosystem was evaluated using microcosm experiments. The residual concentration of the…”
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Interference Effects from Easily Ionizable Elements in Flame AES and ICP-OES: A Proposed Simplified Rate Model Based on Collisional Charge Transfer Between Analyte and Interferent Species by Zaranyika, Mark F., Chirenje, Albert T., Mahamadi, Courtie

“…The effects of excess Na and K on K and Mg atom line emission in the air-acetylene flame and of excess Li and K on Ca, Mg, and Sr atom and ion lines in…”
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Degradation of glyphosate in the aquatic environment: an enzymatic kinetic model that takes into account microbial degradation of both free and colloidal (or sediment) particle adsorbed glyphosate by Zaranyika, M.F, Nyandoro, M.G

“…The kinetics of the degradation of the herbicide glyphosate in distilled water and river water containing river sediment were investigated over a period of 72…”
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A possible steady state kinetic model for the atomization process during flame atomic spectrometry: Application to mutual atomization interference effects between group I elements by Zaranyika, Mark F, Makuhunga, Peter

“…A possible steady state kinetic model for the atomization process during flame atomic spectrometry is presented. It takes into account the relative rates of…”
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Speciation and persistence of dimethoate in the aquatic environment : characterization in terms of a rate model that takes into account hydrolysis, photolysis, microbial degradation and adsorption of the pesticide by colloidal and sediment particles : research article by Zaranyika, Mark F., Mlilo, Justin

“…The kinetics of the degradation of dimethoate in an aquatic microcosm ecosystem, and a distilled water control, charged with the pesticide was studied over a…”
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Speciation and persistence of dimethoate in the aquatic environment : characterization in terms of a rate model that takes into account hydrolysis, photolysis, microbial degradation and adsorption of the pesticide by colloidal and sediment particles : research article by Zaranyika, Mark F, Mlilo, Justin

“…The kinetics of the degradation of dimethoate in an aquatic microcosm ecosystem, and a distilled water control, charged with the pesticide was studied over a…”
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Metal-metal interactions in biological systems. Part IV. Freshwater snail Bulinus globosus by Tomasik, Piotr, Magadza, Christopher M., Mhizha, Sungano, Chirume, Alfred, Zaranyika, Mark. F., Muchiriri, Satchmore

“…The effects of single metal ions, aluminium, cadmium, cobalt, chromium, copper, iron(III), magnesium, manganese, molybdenum, nickel, lead, selenium, vanadium,…”
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Degradation of glyphosate in the aquatic environment: An enzymic kinetic model that takes into account microbial degradation of both free and colloidal (or sediment) particle adsorbed glyphosate by Zaranyika, Mark F, Nyandoro, Munyaradzi G

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Degradation of endosulfan I and endosulfan II in the aquatic environment : a proposed enzymatic kinetic model that takes into account adsorption / desorption of the pesticide by colloidal and / or sediment particles : research article by Zaranyika, Mark F., Jovanni, Mussie, Jiri, Judith

“…The rate of degradation of the α and β isomers of endosulfan, endosulfan I and endosulfan II in distilled water and river water containing river sediment, were…”
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Interference Effects of Easily Ionizable Elements in ICP-AES and Flame AAS: Characterization in Terms of the Collisional Radiative Recombination Activation Energy by Zaranyika, Mark F., Chirenje, Albert T., Mahamadi, Courtie

“…A simplified rate model for the interference effects of easily ionized elements on analyte absorbance and emission signals in Flame atomic absorption…”
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Nonconventional methods of modification of starch by Tomasik, P, Zaranyika, M F

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Photolysis of triclocarban in dilute aqueous and aqueous ethanol solution by Arno H.A. Heyn, Mark F. Zaranyika

“…Bull. Chem. Soc. Ethiop. 1994, 8(2), 69-78…”
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Adsorption of amitraz by a river sediment: apparent thermodynamic properties by Zaranyika, M.F, Mandizha, N.T

“…The adsorption/desorption of amitraz by suspended river sediment particles in an aqueous medium was studied in terms of a model which assumes the…”
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Estimation of the degree of ionization and the proportion of excited atoms in flame atomic spectrometry: a steady state approach by Zaranyika, Mark F.

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The effect of industrial effluent and leachate from landfills on the levels of selected trace heavy metals in the waters of Upper and middle Mukuvisi river in Harare, Zimbabwe by Mark F. Zaranyika, L. Mtetwa, S. Zvomuya, G. Gongoraand, A.S. Mathuthu

“…Bull. Chem. Soc. Ethiop. 1993, 7(1) 1-10…”
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