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Kefa Onchoke

Professor

Stephen F. Austin State University

United States

Research Interests

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Professors in United States Professors in Analytical Chemistry Analytical Chemistry professors in United States

Articles (13)

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2025

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2025

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2025

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2023

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2023

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2022

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2022

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2021

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2021

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2021

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2021

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2020

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2020

Collaborators (3)

Bidisha Sengupta

Associate Professor

Stephen F. Austin State University

UNITED STATES

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Robert Friedfeld

Associate Professor

Stephen F. Austin State University

UNITED STATES

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Olabisi Omowunmi Ogunlewe

Graduate Researcher

Stephen F. Austin State University

UNITED STATES

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Kefa Onchoke

Research Interests

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Articles (13)

Biofilm-Based Biomonitoring of Treated Wastewater Using Bacillus thuringiensis: Toward Sustainable Water Reuse

Simultaneous quantification of carbaryl, chlorpyrifos, and paraquat in a municipal wastewater treatment plant by SPE-RP-HPLC–PDA-FD method

The effect of biosolid/soil composition on growth and uptake of zinc (Zn) by broccoli (Brassica oleracea var.) under greenhouse conditions

Speciation of Elements via a Sequential Extraction Procedure in Municipal Wastewater Biosolids from Three Rural WWTP in East Texas (USA)

Detection of Carbamazepine, Diclofenac, and Ketoprofen via a SPE-HPLC-PDA Method in a Municipal Wastewater Treatment Plant in East Texas, USA

Evaluation and removal efficiencies of a rural WWTP for metals and anions in Lufkin, East Texas (USA)

Evaluation and analysis of perlite and municipal wastewater sludge (biosolids) from three wastewater treatment plants in East Texas, USA

Student Success in Five Concepts: A Six-Year Study in an Introductory Chemistry Course for Non-Science Majors

Comprehensive structural and compositional investigation of Maya pottery sherds from Lake Petén Itzá, Guatemala, Central America

13C NMR chemical shift assignments of nitrated benzo[a]pyrenes based on two-dimensional techniques and DFT/GIAO calculations

Evaluating bioavailability of elements in municipal wastewater sludge (Biosolids) from three rural wastewater treatment plants in East Texas (USA) by a sequential extraction procedure

Vibrational Spectroscopic Studies of Nitrated Polycyclic Aromatic Hydrocarbons (NPAHs): A Review (1960-2019)

Data on GC/MS elution profile, <sup>1</sup>H and <sup>13</sup>C NMR spectra of 1-, 3-, and 6-Nitrobenzo[a]pyrenes

Collaborators (3)

Bidisha Sengupta

Robert Friedfeld

Olabisi Omowunmi Ogunlewe

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