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Simultaneous Determination of Cr (III), Cd (II) and Cu (II) from Bahir Dar tannery effluent using voltammetric techniques with Anthraquinone modified carbon paste electrode

Tizita, Yigletu (2019-04-05)

Now days, the attention given and focus on heavy metals determination is increased because of their serious environmental problems which in turn adverse health effects. These toxic heavy metals are not easily degraded. ...

VOLTAMMETRIC DETERMINATION OF ASCORBIC ACID IN FRESH ORANGE SAMPLES USING TITANIUM DIOXIDE MODFIED CARBON PASTE ELECTRODE

Eshetu, Yimer (2019-02-20)

This study describes the preparation and application of a titanium dioxide modified carbon paste electrode for ascorbic acid determination in orange fruit samples by square wave voltammetric method. While the electrochemical ...

CHEMICAL ANALYSIS OF SOME SELECTED CEMENTS (HABESHA, DERIBA, DANEGOTIE, EAST AND MOSSEBO) IN ETHIOPIA

Abraraw, Birhanu (2018-11-25)

The characterization and classification of cement is based on the determination of its chemical composition. Therefore, the major purpose of this study was to determine chemical properties of five different brands of ...

ASSESSMENT OF THE LEVEL OF METALS AND CHARACTERIZATION OF AMBER FROM SOUTH WOLLO (DEDEBA) AND NORTH SHOA (DIMA)

DEBRITU, ZENEBE (2018-11-25)

Amber is one of a gem family, which is fossilized tree resin and has been appreciated for its color and natural beauty since Neolithic time. Plant resin is formed through the natural polymerization and fossilization of ...

ELECTROCHEMICAL DETERMINATION OF RESORCINOL IN WATER SAMPLES USING Fe (III) DOPED ZEOLITE-GRAPHITE COMPOSITE MODIFIED GLASSY CARBON ELECTRODE

Mulie, Begashaw (2018-11-27)

Cyclic voltammetry (CV) and square wave voltammetry (SWV) were used for characterizing and determining resorcinol concentration in water samples from selected areas of Bahir Dar city, Ethiopia. While the electrochemical ...

SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC METHYLENE BLUE DEGRADATION ACTIVITY OF CuO/ZnO NANOPARTICLES

Awoke, Alemu (2018-11-13)

Organic pollutants present in water near industrial areas are a major problem for present world. During dye production and textile manufacturing processes, a large quantity of waste water containing dye stuffs with intensive ...

VOLTAMMETRIC DETERMINATION OF PARACETAMOL IN PHARMACEUTICAL TABLET SAMPLES USING ANTHRAQUINONE MODIFIED CARBON PASTE ELECTRODE

Welday, Teklay (2018-11-09)

Voltammetric method was developed for the direct quantitative determination of paracetamol in pharmaceutical tablet samples based on anthraquinone modified carbon paste electrode. The electrochemical oxidation and determination ...

DETERMINATION OF THE LEVELS OF PHOSPHATE ANDNITRATE IONS AND SOME SELECTED METALS IN SERENTA RIVER WEREDA TSELEMTI, ETHIOPIA

: DESALE, KASA (2018-11-09)

The purpose of the present study is to assess the levels of nitrate (NO3-) and phosphate (PO43-)ions and selected metals (Mg, Ca, Zn and Cu) in water samples collected intwo seasons, April 15 to 18/2018 (dry season) and ...

DETERMINATIONOFSOME ESSENTIAL TRACE ELEMENTS IN SESAME GRAINS GROWN IN EBINAT WOREDA, ETHIOPIA

AZANEW, TEZERA (2018-11-07)

Sesame is considered to be healthful cereal for food. Sesame grains are high in energy and contain many health benefiting nutrients; minerals, antioxidants and vitamins that are essential for wellness and have positive ...

VOLTAMETRIC DETERMINATION OF VITAMINE “C” CONTENT IN CABBAGE USING ANTHRAQUINONE MODIFIED CARBON PESTE ELECTRODE

AMARE, NIGUSIE (2018-11-07)

Anodic stripping voltammetric determination of ascorbic acid using carbon paste electrode modified with anthraquinone is investigated in the present work. Electrochemical investigation of ascorbic acid using square wave ...

HEAVY METALS (Pb, Ni, Cd and Cr) ANALYSIS IN SOLID WASTE DISPOSAL SITE USING ICP-OES: THE CASE OF BAHIR DAR CITY

Lijalem, Belay (2018-11-07)

Uncontrolled disposal of solid waste causes different adverse ecological impacts. One of the serious problems is enrichment of heavy metals to the nearest environment. The present study is an attempt to study the heavy ...

SYNTHESIS AND BIOLOGICAL ACTIVITIES INVESTIGATION OF Co(II) COMPLEXES WITH 2,2’- BIPYRIDINEAND ADENINE AS LIGANDS

WORKU, AYECHEW (2018-11-06)

To alleviate the alarming problem of microbial resistance to antibiotics transition metalcomplexes are taken as alternatives. In line with this, in this work, two complexesofcobalt(II)namely,[Co(Bpy)2(H2O)]Cl2and[Co(Bpy) ...

“SYNTHESIS AND BIOLOGICAL ACTIVITIES INVESTIGATION OF CU (II) COMPLEXES WITH 2, 2`-BIPYRIDINE AND ADENINE AS LIGANDS”

FIKADU, TEGAFAW (2018-11-06)

Synthesizing new biologically active compounds sets up the efforts made in overcoming the alarming problem of microbial resistance to antibiotics. In line with this, a copper (II) coordination compound of 2, 2`-bipyridine ...

DETERMINATION OF THE CONCENTRATION OF SELECTED ESSENTIAL AND TOXIC METALS IN FENUGREEK SEED (TRIGONELLA FOENUM-GRAECUM L.): THE CASE OF SIMADA WEREDA, SOUTH GONDAR ZONE, AMHARA REGIONAL STATE, ETHIOPIA

GEDEFAW, BIRHAN (2018-11-06)

A composite Fenugreek (Trigonella foenum-graecum L.) seed samples were collected from five farmers each from Engudadar, Gujign, and Qachena Eyesus kebeles of Simada wereda , south Gonder zone, Amhara Region, Ethiopia to ...

DETERMINATION OF CAFFEINE LEVEL IN BRANDS OF INSTANT COFFEE AVAILABLE IN ETHIOPIAN MARKET USING UV-VIS SPECTROPHOTOMETRY AND HIGH PERFORMANCE LQUID CHROMATOGRAPHY

MOHAMMED, OMER (2018-11-06)

Coffee is one of the most popular stimulant beverages in the world, as it is highly rich source of an alkaloid component known as caffeine. On the other hand, people are using an ease and simplified preparation of coffee ...

DETERMINATION OF SELECTED MACRONUTRIENTS OF CONGRESS WEED (Parthenium hysterophorus L.) COMPOST AND ITS EFFECT ON VEGETABLE SEED GERMINATION

FEKEDE, ASSAMENE (2018-11-06)

Parthenium hysterophorus commonly known as congers grass is a noxious weed. The weed is dominant in many parts of Ethiopia and became beyond the control of the smallholder farmers and the government. There have been ...

DIVERSITY, STRUCTURE AND CONSERVATION STATUS OF CHURCH FORESTS IN DANGLA TOWN, AWI ZONE OF THE AMHARA REGION OF NORTHWESTERN DIVERSITY, STRUCTURE AND CONSERVATION STATUS OF CHURCH FORESTS AWI ZONE OF THE AMHARA REGION OF NORTHWESTERN DIVERSITY, STRUCTURE AND CONSERVATION STATUS OF CHURCH FORESTS AWI ZONE OF THE AMHARA REGION OF NORTHWESTERN ETHIOPIA

TAYACHEW, BIRHANU (2018-11-05)

The study was conducted at Dangla town Church Forests, Awi Zone, Amhara Region, Northwestern Ethiopia. The objective of this study was to determine and analyze the species diversity, population structure and regeneration ...

DETERMINATION OF TOXIC (Cd, Pb) AND ESSENTIAL (Zn, Cu) METALS IN RICE PRODUCTS FROM FOGERA, SOUTH GONDAR, ETHIOPIA USING ICP - OES

: Teshager, Assefa (2018-11-05)

Rice is the most important staple food crop for more than half of the world’s population. In present study the level of selected toxic elements (Pb, Cd) and essential elements (Zn, Cu) in rice samples were collected from ...

Synthesis, Characterization and Assessment of Antibacterial Activities of Iron (III), Mixed Ligand Complexes containing 2,2’-Bipyridine and Acetamide

Bekalu, Molla (2018-11-01)

ABSTRACT Antimicrobial resistance is one of our most series health problems. Infections from resistance bacteria are now common, and some pathogens have been become resistant to multiple classes of antibiotics. Transition ...

DETERMINATION OF SOME ESSENTIAL (Zn&Cu) AND TOXIC METALS (Pb&Cd) IN ETHIOPIAN KALE (BRASSIC CARINATAA.)USING ICP-OES MARKETEDINBAHIR DAR CITY,ETHIOPIA

Shumet, Asmare (2018-11-01)

Ethiopian kale is the most consumed vegetable in Bahir Dar, prepared in many different ways for eating. It can be pickled, fermented for dishes or eaten raw. In present study, two essential metals (zinc (Zn) and copper ...

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