Dr M Mketo

Qualifications

• BSc Hons (UWC)
• MSc (SUN)
• PhD (UJ) 

Currently teaching

• CHE1503: Chemistry I (Practical)
• CHE2624: Analytical Chemistry II (Practical)
• CHE3704: Analytical Chemistry III (Theory)
• CHE3724: Analytical Chemistry III (Practical)

Fields of academic interests

• Microwave and micro-extraction (SPME, LLME, SDME & HSME) sample preparation
• nanomaterial
• inorganic and organic pollutants
• spectrometric and chromatographic techniques
• various matrices (water, food, petrochemicals, coal, soil, sediments, etc.)

Field of Specialisation

Both inorganic (heavy metals, non-metals and metalloids) and organic pollutants are a threats to living organisms. The existence of these persistent and non-biodegradable pollutants arises from natural, industrial and anthropogenic activities. Most of these pollutants are notorious and even at trace levels (ppb-ppt). Therefore, my research interests are to develop and evaluate environmentally friendly sample preparation methods for extraction of inorganic and organic pollutants followed by spectrometric and chromatographic determination, respectively.

Journal articles

• N.M. Masanabo, O. Zinyemba, N. Mketo, A greener microwave-assisted extraction method       for rapid spectroscopic determination of selected metals in river and freshwater sediment  certified reference materials, 10.1080/03067319.2018.1559306.
• N. R. Biata, G. P. Mashile, J. Ramontja, N. Mketo, P. N. Nomngongo, Application of ultrasound-assisted cloud point extraction for preconcentration of antimony, tin and thallium in food and water samples prior to ICP-OES determination, Journal of Food Composition and Analysis 76 (2019) 14-21.
• N.M. Ngoepea, Z. Mbita, M. Mathipa, N. Mketo, B. Ntsendwana, N.C. Hintsho-Mbita, Biogenic synthesis of ZnO nanoparticles using Monsonia burkeana for use in photocatalytic, antibacterial and anticancer applications. Ceramics International 44 (2018) 16999-17006.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, Environmentally friendly microwave-assisted sequential extraction method followed by ICP-OES and ion-chromatographic analysis for rapid determination of sulphur forms in coal samples. Talanta 182 (2018) 567-573.
• N.R. Biata, K.M. Dimpe, J. Ramontja, N. Mketo, P.N. Nomngongo, Determination of thallium in water samples using inductively coupled plasma optical emission spectrometry (ICP-OES)  after ultrasonic assisted-dispersive solid phase microextraction, Microchemical Journal 137 (2018) 214–222.    
• N.R. Biata, L. Nyaba, J. Ramontja, N. Mketo, P.N. Nomngongo, Determination of antimony and tin in beverages using inductively coupled plasma-optical emission spectrometry after ultrasound-assisted ionic liquid dispersive liquid-liquid phase microextraction, Food chemistry 237 (2017) 904-911.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, Effect of different dilute alkaline extracting reagents on coal desulphurization under microwave radiation. Environ Sci Pollut Res 24 (2017),  19852–19858.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, An overview on analytical methods for quantitative determination of multi-element in coal related samples, TRAC 85 (2016) 107-116.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, Development of a novel and green microwave- assisted hydrogen peroxide digestion method for total Sulphur quantitative extraction in  coal samples prior to inductively coupled plasma-optical emission spectroscopy and ion  chromatography determination, RSC Adv. 5 (2015) 38931-38938.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, Evaluation of different microwave-assisted dilute acid extracting reagents on simultaneous coal desulphurization and demineralization, Fuel, 163 (2016) 189-195.
• N. Mketo, P.N. Nomngongo, J.C. Ngila, An innovative microwave-assisted digestion method  with diluted hydrogen peroxide for rapid extraction of trace-elements in coal samples  followed by inductively coupled plasma-mass spectrometry, Microchemical J., 124 (2016)  208.