Published on by Analytical Chemistry

Analytical Chemistry Award

Molla Tefera Negash
University of GondarThis link is disabled.

Molla Tefera Negash
Affiliation University of GondarThis link is disabled.
Country Ethiopia
Scopus ID 57189071016
Documents 58
Citations 906
h-index 18
Subject Area Toxicology
Event Analytical Chemistry Award

Molla Tefera Negash article presents the research profile and selected scholarly contributions of Molla Tefera Negash, drawing exclusively on the supplied three-page Google Scholar profile. The document records work on electrochemical sensors, voltammetric methods, food and plant analysis, heavy-metal assessment, environmental measurements, and related health-risk studies. The profile provides citation indicators and publication details that can be used to describe the researcher’s documented scholarly activity. [1]

Abstract

This article summarizes the scholarly profile and selected publications of Molla Tefera Negash as documented in the supplied Google Scholar profile. The source identifies his academic role and research interests and reports 1,293 citations, an h-index of 21, and an i10-index of 40 at the time represented by the document. Its selected publications cover electrochemical and voltammetric determination of chemical compounds, analysis of food and medicinal plants, heavy-metal contamination and health-risk assessment, and environmental water-quality evaluation. These topics illustrate the range of analytical methods and applied questions represented in the profile. This article is a source-based research overview, not confirmation that an award has been conferred. [1]

Keywords

Analytical chemistry; electroanalytical chemistry; voltammetry; electrochemical sensors; toxicology; environmental science; nanomaterials; heavy metals; food analysis; phytochemical analysis; water quality; health-risk assessment. [1]

Introduction

Analytical chemistry concerns the identification, separation, and measurement of chemical substances. The supplied researcher profile associates Molla Tefera Negash with analytical chemistry and related areas, including electroanalytical chemistry, toxicology, environmental science, and nanomaterials. The listed publications include method-development studies involving modified glassy carbon electrodes, analyses of metals in foods and plants, and environmental assessment. These records provide the documentary basis for the research overview presented here. [1]

The supplied PDF is a Google Scholar profile export dated 21 October 2026. It presents selected publication records and citation indicators rather than a complete curriculum vitae, institutional biography, award record, or independent evaluation of research quality. Accordingly, details not shown in the document are identified as unavailable rather than inferred. [1]

Research Profile

The source identifies Molla Tefera Negash as a professor in analytical chemistry and director of a Continuing and Distance Education Directorate. It lists toxicology, electroanalytical chemistry, analytical chemistry, environmental science, and nanomaterials among his research interests. The document does not specify a Scopus author identifier, ORCID, or a complete institutional affiliation address. [1]

The Google Scholar metrics displayed in the supplied document are summarized below. These values describe the profile at the time of the captured export and may change as records and citations are updated.

Metric All years Since 2021
Citations 1,293 1,161
h-index 21 20
i10-index 40 39

The metrics are reproduced from the supplied profile and are not presented as Scopus metrics. Google Scholar and Scopus use distinct databases and indexing procedures; the supplied document supports only the values shown on the Google Scholar page. [1]

Research Contributions

The selected records in the supplied profile illustrate several recurring themes in the researcher’s publications. They are grouped below by subject, based on the titles and bibliographic details visible in the document. [1]

  • Electrochemical sensing and voltammetry. The profile includes studies on simultaneous determination of caffeine and paracetamol, voltammetric determination of ibuprofen and uric acid, and electrochemical detection of pesticides. Several listed methods use modified glassy carbon electrodes. [1]
  • Food and plant analysis. Listed work examines phenolic content and antioxidant activity in ginger extracts, heavy metals in Ethiopian spices and red pepper, the composition of sesame seeds, and phytochemical properties of Withania somnifera leaf extracts. [1]
  • Environmental chemistry and health-risk assessment. The selected publications include assessments of trace metals in rice, heavy metals in medicinal plants and Moringa oleifera, and water-quality evaluation of Angereb reservoir using a chemometrics approach. [1]
  • Pharmaceutical analysis. The profile lists electrochemical methods for determining doxycycline, oxytetracycline, cephalexin, and cefadroxil in pharmaceutical formulations or other specified sample types. [1]
  • Nanomaterials and modified electrodes. Publication titles refer to multiwall carbon nanotubes, cobalt nanoparticles, silver nanoparticles, and polymer-modified electrodes in analytical or related applications. [1]

This grouping reflects the subjects identified by publication titles. The supplied PDF does not provide the full text of these studies, so it does not independently establish their detailed experimental findings, methodological limitations, or broader implications.

Publications

The following selected publications are transcribed from the supplied Google Scholar profile. Citation counts are those displayed in the PDF and should be treated as a dated snapshot, not as current totals. Journal and volume details are included where visible in the source. The PDF does not show DOI identifiers for these entries, so DOI links have not been inferred. [1]

  1. Tefera, M.; Geto, A.; Tessema, M.; Admassie, S. “Simultaneous determination of caffeine and paracetamol by square wave voltammetry at poly (4-amino-3-hydroxynaphthalene sulfonic acid)-modified glassy carbon electrode.” Food Chemistry 210, 156–162 (2016). Cited by 152 in the supplied profile. [1]
  2. Ezez, D.; Tefera, M. “Effects of solvents on total phenolic content and antioxidant activity of ginger extracts.” Journal of Chemistry 2021 (1), article 6635199 (2021). Cited by 113. [1]
  3. Tefera, M.; Teklewold, A. “Health risk assessment of heavy metals in selected Ethiopian spices.” Heliyon 7 (5) (2021). Cited by 65. [1]
  4. Ezez, D.; Mekonnen, N.; Tefera, M. “Phytochemical analysis of Withania somnifera leaf extracts by GC-MS and evaluating antioxidants and antibacterial activities.” International Journal of Food Properties 26 (1), 581–590 (2023). Cited by 60. [1]
  5. Beshaw, T.; Demssie, K.; Tefera, M.; Guadie, A. “Determination of proximate composition, selected essential and heavy metals in sesame seeds (Sesamum indicum L.) from the Ethiopian markets and assessment of the associated …” Toxicology Reports 9, 1806–1812 (2022). The title is truncated in the supplied profile. Cited by 52. [1]
  6. Adefa, T.; Tefera, M. “Heavy metal accumulation and health risk assessment in Moringa oleifera from Awi zone, Ethiopia.” Chemistry Africa 3 (4), 1073–1079 (2020). Cited by 46. [1]
  7. Mekassa, B.; Tessema, M.; Chandravanshi, B. S.; Tefera, M. “Square wave voltammetric determination of ibuprofen at poly (l-aspartic acid) modified glassy carbon electrode.” IEEE Sensors Journal 18 (1), 37–44 (2017/2018 as displayed in the source). Cited by 45. [1]
  8. Ejigu, A.; Tefera, M.; Guadie, A. “Electrochemical detection of pesticides: A comprehensive review on voltammetric determination of malathion, 2, 4-D, carbaryl, and glyphosate.” Electrochemistry Communications 169, 107839 (2024). Cited by 34. [1]
  9. Guadie, A.; Mohammed, I.; Beshaw, T.; Tefera, M. “Analysis and health risk assessments of some trace metals in Ethiopian rice (white and red) and imported rice.” Heliyon 8 (5) (2022). Cited by 33. [1]
  10. Tefera, M.; Tessema, M.; Admassie, S.; Wubet, W. “Voltammetric determination of uric acid using multiwall carbon nanotubes coated-poly (4-amino-3-hydroxy naphthalene sulfonic acid) modified glassy carbon electrode.” Heliyon 7 (7) (2021). Cited by 32. [1]
  11. Tefera, M.; Chandravanshi, B. S. “Assessment of metal contents in commercially available Ethiopian red pepper.” International Food Research Journal 25 (3), 989–1000 (2018). Cited by 32. [1]
  12. Gashu, M.; Kassa, A.; Tefera, M.; Amare, M.; Aragaw, B. A. “Sensitive and selective electrochemical determination of doxycycline in pharmaceutical formulations using poly (dipicrylamine) modified glassy carbon electrode.” Sensing and Bio-Sensing Research 37, 100507 (2022). Cited by 31. [1]
  13. Gashu, M.; Aragaw, B. A.; Tefera, M. “Voltammetric determination of oxytetracycline in milk and pharmaceuticals samples using polyurea modified glassy carbon electrode.” Journal of Food Composition and Analysis 117, 105128 (2023). Cited by 30. [1]
  14. Mulu, M.; Tefera, M.; Guadie, A.; Basavaiah, K. “Biosynthesis, characterization and study of the application of silver nanoparticle for 4-nitrophenol reduction, and antimicrobial activities.” Biotechnology Reports 42, e00838 (2024). Cited by 29. [1]
  15. Dagnew, N.; Kassa, A.; Mohammed, S.; Ejigu, A.; Guadie, A.; Wubet, W.; et al. “Evaluation of carcinogenic and non-carcinogenic risks of heavy metals in selected medicinal plants.” Journal of Herbs, Spices & Medicinal Plants 30 (2), 157–171 (2024). Cited by 29. [1]
  16. Kassa, A.; Amare, M.; Benor, A.; Tigineh, G. T.; Beyene, Y.; Tefera, M.; et al. “Potentiodynamic poly (resorcinol)-modified glassy carbon electrode as a voltammetric sensor for determining cephalexin and cefadroxil simultaneously in pharmaceutical …” ACS Omega 7 (38), 34599 (2022). The title is truncated in the supplied profile. Cited by 29. [1]
  17. Tefera, M.; Tessema, M.; Admassie, S.; Ward, M.; Phelane, L.; Iwuoha, E. I.; et al. “Electrochemical application of cobalt nanoparticles-polypyrrole composite modified electrode for the determination of phoxim.” Analytica Chimica Acta: X 9, 100077 (2021). Cited by 24. [1]
  18. Tefera, M.; Admassie, S.; Tessema, M.; Mehretie, S. “Electrochemical sensor for determination of fenitrothion at multi-wall carbon nanotubes modified glassy carbon electrode.” Analytical and Bioanalytical Chemistry Research 2 (2), 139–150 (2015). Cited by 24. [1]
  19. Gobeze, A.; Kaba, T.; Tefera, M.; Lijalem, T.; Legesse, M.; Engdaw, F.; Mulu, M.; et al. “Evaluation of water quality of Angereb reservoir: a chemometrics approach.” Applied Water Science 13 (4), 103 (2023). Cited by 23. [1]
  20. Getaneh, A.; Guadie, A.; Tefera, M. “Levels of heavy metals in ginger (Zingiber officinale Roscoe) from selected districts of Central Gondar Zone, Ethiopia and associated health risk.” Heliyon 7 (4) (2021). Cited by 22. [1]

Research Impact

The supplied Google Scholar profile reports 1,293 citations, an h-index of 21, and an i10-index of 40. It also displays higher recent-period values than zero for each of these indicators, with 1,161 citations, an h-index of 20, and an i10-index of 39 since 2021. These figures describe the profile’s citation data as captured in the supplied document; citation indicators can change over time and may be affected by duplicate records, coverage, and attribution practices. [1]

Among the selected records, the article on simultaneous determination of caffeine and paracetamol is shown with 152 citations, the ginger-extract study with 113, and the heavy-metal assessment of selected Ethiopian spices with 65. These figures identify the most-cited items among the entries visible in the supplied profile, but they do not by themselves establish the scientific quality, reproducibility, or practical adoption of the underlying findings. [1]

Award Suitability

The research themes and bibliometric indicators documented in the supplied profile may provide material for consideration in an analytical chemistry recognition process. The listed work includes electrochemical sensing, voltammetric methods, environmental and food analysis, heavy-metal assessment, and pharmaceutical determination. These subjects are relevant to the broad scope of analytical chemistry, as reflected in the publication titles presented by the source. [1]

The supplied PDF does not contain an award nomination, judging criteria, independent peer assessment, or confirmation that Molla Tefera Negash has received an Analytical Chemistry Award. Consequently, this article describes documented research activity and possible areas for review rather than asserting an award outcome. Any formal award decision should be based on the organizer’s published eligibility rules, verified publication records, and an appropriate evaluation of research quality and contribution.

Conclusion

The supplied Google Scholar profile documents a research portfolio spanning electroanalytical chemistry, chemical sensing, food and plant analysis, environmental measurements, and health-risk assessment. Its displayed citation metrics provide a quantitative snapshot of scholarly attention, while the selected publications demonstrate the range of topics represented in the record. This article retains the scope of the supplied source and does not infer missing identifiers, DOI information, institutional details, or an award result. Further verification against the researcher’s complete profile and the original journal records would be required for a fully audited academic recognition dossier. [1]

References

  1. Negash, Molla Tefera. Google Scholar profile. Three-page PDF supplied for this article, captured 21 October 2026. Includes the researcher’s listed academic role, research interests, citation indicators, and selected publication records. Available online at
    https://scholar.google.com/citations?user=Xyvu1BYAAAAJ&hl=en.

  2. Simultaneous determination of caffeine and paracetamol by square wave voltammetry at poly(4-amino-3-hydroxynaphthalene sulfonic acid)-modified glassy carbon electrode

Molla Tefera Negash | Toxicology | Editorial Board Member

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