Kenya

University of Nairobi

GEOFFREY NJUGUNA KAMAU (Ph. D)

University of Nairobi, Department of Chemistry, P.O. Box 30197 (GPO)
Nairobi, Kenya; TEL: +[254] 20 444-0164; FAX: +[254] 20 444-0164
E-MAIL: genkamau@yahoo.com

Research Interests:

  1.  Applications of analytical techniques to applied research, Electroanalytical chemistry.
  2.  Catalytic reduction of toxic organic halides by metal complexes and dyes.
  3. Micellar/ microemulsion catalysis, spectroscopic and chromatographic methods for analysis of pesticides, heavy metals pollutants, and natural products, specifically, Avocado oil, vernonia oil, Matricaria Chamomilla flowers and Rice Husks.
  4.  Applied Chemistry with environmental approach.
  5. Data registry of industrial Chemical Wastes/Chemical Information, waste management and probable prediction of secondary toxic products and pollutants from non-toxic industrial wastes.

Selected publications

  1. Kamau GN, Munge B, Selective control and rate enhancement of reactions involving catalytic reduction of organohalides and reduced form of myoglobin in microemulsions,Pure and Applied Chemistry 76 (4): 815-828, 2004.
  2. Kamau GN, Guto MP, Munge B, Panehagnula V, Rusling JF , Myoglobin coadsorbed on electrodes from microemulsions provides reversible electrochemistry and tunable electrochemical catalysis, LANGMUIR 19 (17): 6976-6981, 2003
  3. Mbui DN, Shiundu PM, Ndonye RM, Kamau GN, Adsorption and detection of some phenolic compounds by rice husk ash of Kenyan origin, Journal of Environmental Monitoring 4 (6): 978-984, 2002
  4. Syagga PM, Kamau GN, Waswa-Sabuni B, Dulo SO, Potentials of using waste burnt clay as a pozzolanic material in Kenya, Discovery and Innovation 13 (3-4): 114-118, 2001
  5. Kiflom WG, Wandiga SO, Kamau GN, Status of organochlorine (DDT) pollutants and steps toward electrocatalytic reductions, Pure and Applied Chemistry 73 (12): 1907-1916, 2001

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SHEM OYOO WANDIGA (Ph. D.)

University of Nairobi, Department of Chemistry, P.O. Box 30197 - 00100 GPO, NAIROBI. Kenya. Or Centre for Science and Technology Innovations
a UNESCO associated Centre Utalii House, Room 802, Utalii Street, P.O. Box 42792-00100, Nairobi, Kenya, Email: sowandiga@iconnect.co.ke

Research Interests

Studying sources and sinks of biogenic gases; persistent organochlorine pesticides in the tropics; trace metals concentration in various environmental media; and complexes of Group VB metals with sulfur and oxygen binding ligands; climate change and health.

Design, synthesis and characterization of metal chalets which have apparent utility as chemotherapeutic agents and as models for metal binding dynamics in biological systems. Second interest is the design, synthesis and characterization of metal chelates with unique structural features, stereochemistry, optical activity and electronic properties. In all of my research interests the use of most analytical instruments are involved. A third interest is in Environmental Chemistry. In this project the analysis of trace elements at ppm to ppb by polarography and AAS is being studied. Dissipation and degradation of persistent pesticides in the tropics is also being studied. The biogenic emission sources of trace atmospheric gases research has also been conducted, as well as dissipation of organochlorine pesticides in the tropics.

Selected Publications

  1. Use and distribution of organochlorine pesticides in Africa(2001). S.O. Wandiga. Pure and Applied Chemistry 73 (7) 1147 - 1155.
  2. Dissipation, distribution and uptake of 14C-chloropyrifos in a model tropical seawater/sediment/fish ecosystem. J.O. Lalah, D.M.K. Ongeri, S.O. Wandiga and I. O. Jumba (2003). Bull. Env. Cont. and Toxic. 70(5) , 883-889.
  3. Environmental assessment of the East African Rift Valley Lakes. Eric O. Odada, Daniel O. Olago, Fred Bugenyi, Kassim Kulindwa, Jerome Karimumuryango, Kelly West, Micheni Ntiba, Shem Wandiga, Peninah Aloo-Obudho, Pius Achola (2003).. Aquatic Sciences. 65,254-271 .
  4. Mitigation of environmental problems in Lake Victoria, East Africa: Causal Chain and Policy Options Analysis. Eric O. Odada, Daniel O. Olago, Kassim Kulindwa, Micheni Ntiba, Shem Wandiga (2004). Ambio. 33, No 1-2. Feb. 13-23.
  5. The distribution, metabolism and toxicity of 14C-DDT on model aquarium tanks with fish and sediment simulating a tropical marine environment (2004). S.O. Wandiga, I.O. Jumba, W.G. Mutaaga and J.O. Lalah. Toxicol.and Environ. Chem. Vol.00,No. 0, pp1-16.
  6. Studies on biodegradation of 2,4-D and metribuzin in soil under controlled conditions(2004). Z.M. Getenga, V. Madadi and S.O. Wandiga. Bull. Environ. Contam. Toxicol.72:504-513.
  7. Determination of organochlorine pesticide residues in soil and water from River Nyando drainage system within Lake Victoria basin, Kenya(2004). Z.M. Getanga, F.O. Keng'ara and S.O. Wandiga. Bull. Environ. Contam. Toxicol. 72: 335-343.

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Egerton University, Kenya

W. J. MAVURA (Ph. D)

Department of Chemistry, Egerton University, PO Box 536, Njoro, Kenya

Selected Publications

  1. WJ Mavura and PT Wangila, The pollution status of Lake Nakuru, Kenya: heavy metals and pesticide residues, Afr. J. Aqua. Sci: 2003 28(1): 13-18
  2. Mavura W.J.; Mwanyika F.T.; Wrensford G., Construction and Optimisation of a Cartridge Filter for Removing Floride in Drinking Water, Bulletin of the Chemical Society of Ethiopia, 1 June 2004, vol. 18, no. 1, pp. 1-6(6)

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PT WANGILA (Ph. D.)

Department of Chemistry, Egerton University, PO Box 536, Njoro, Kenya

Selected Publications

1 WJ Mavura and PT Wangila, The pollution status of Lake Nakuru, Kenya: heavy metals and pesticide residues, Afr. J. Aqua. Sci: 2003 28(1): 13-18

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NGARI M. S. (Ph. D.)

Egerton University, Chemistry Department P. O. Box 536 Njoro, Kenya

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OKELLO M.O. (Ph. D.)

Egerton University, Chemistry Department P. O. Box 536 Njoro, Kenya

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ROTICH M. (Ph. D.)

Egerton University, Chemistry Department P. O. Box 536 Njoro, Kenya

e-mail rotichmak@yahoo.com

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C. M. NGUTA. (Ph. D.)

Egerton University, Chemistry Department P. O. Box 536 Njoro, Kenya

Telephone: +254 51 62 481 /62 491 Ext. 3460

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OMOLO J. O.

Egerton University, Chemistry Department P. O. Box 536 Njoro, Kenya; -Natural Products Division. P. O. Box 536, Njoro, Kenya;

Email:ojoonearth@yahoo.com;

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Kenyatta University

THAIRU H. M. (Ph. D.)

Kenyatta University, Chemistry Department P. O. Box 43844 Nairobi, Kenya

Selected Publications

  1. Kituyi JL, Thairu HM, Irina J, et al. Speciation of cadmium mixed ligand complexes in salt water lakes
  2. Bulletin of the Chemical Society of Ethiopia 17 (1): 85-94, 2003
  3. Wekesa NMN, Chhabra SC, Thairu HM L-ascorbic acid losses in Kenyan vegetables during cooking as determined by high performance liquid chromatographyBulletin of the Chemical Society of Ethiopia 15 (1): 65-70, 2001
  4. Wekesa NMN, Chhabra SC, Thairu HM

Determination of L-ascorbic acid in Kenyan fresh and processed fruits and vegetables by differential pulse anodic stripping voltammetry
Bulletin of the Chemical Society of Ethiopia 10 (2): 165-169, 1996 

Selected Publications

  1. Multivariate analysis of the sensory changes in the dehydrated cowpea leaves,  Nyambaka H, Ryley J, Talanta 64 (1): 23-29, 8 2004
  2. Degradative pro-vitamin A active compounds of all-trans-beta-carotene in dehydrated dark green leafy vegetables,  Nyambaka HN, Ryley J., Bulletin of the Chemical Society of Ethiopia 15 (1): 57-64, 2001
  3. An isocratic reversed phase HPLC separation of the stereoisomers of the provitamin A carotenoids (alpha- and beta-carotene) in dark green vegetables,  Nyambaka H, Ryley J., Food Chemistry 55 (1): 63-72, 1996

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NYAMBAKA H. (Ph. D.)

Department of Chemistry, Kenyatta University, P.O. Box 43844, Nairobi.-Kenya

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Jomo Kenyatta University of Agriculture and Technology (JKUAT)

GACHANJA A. (Ph. D.)

Jomo Kenyatta University of Agriculture and Technology, Chemistry Department, P.O. Box 62000, Nairobi, Kenya.

(e-mail: gachanja@aicad.or.ke)

Selected Publications

  1. Determination of mercury species in sea-water by liquid chromatography with inductively coupled plasma mass spectrometric detection  Bloxham MJ, Gachanja A, Hill SJ, et al., Journal of Analytical Atomic Spectrometry 11 (2): 145-148, 1996
  2. Determination of Aldehydes in Used Engine Oils by Liquid-Chromatography With Chemiluminescence Detection,  Gachanja AN, Lewis SW, Worsfold PJ, Journal Of Chromatography A 704 (2): 329-337, 1995
  3. Gachanja A , Worsfold P, Determination of Aliphatic Carboxylic-Acids in Nonaqueous Matrices by Liquid-Chromatography with Peroxyoxalate Chemiluminescence Detection, Analytica Chimica Acta 290 (1-2): 226-232, 1994
  4. Monitoring Of Polycyclic Aromatic Hydrocarbon Emissions From Biomass Combustion In Kenya Using Liquid-Chromatography With Fluorescence Detection  Gachanja AN, Worsfold PJ, Science of the Total Environment 138 (1-3): 77-89, 1993

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KABERIA F. (Ph. D.)

Department of Chemistry, JKUAT, P.O. Box 62000, Nairobi, Kenya.

Selected Publications

  1. Isoflavanones from the allelopathic aqueous root exudate of Desmodium uncinatum, Tsanuo MK, Hassanali A, Hooper AM, Khan Z, Kaberia F, Pickett JA, Wadhams LJ, Phytochemistry 64 (1): 265-273, 2003
  2. The in vitro anti-fungal and anti-bacterial activities of beta-sitosterol from Senecio lyratus (Asteraceae), Kiprono PC, Kaberia F, Keriko JM, Karanja JN, Zeitschrift Fur Naturforschung C-A, Journal of Biosciences 55 (5-6): 485-488, 2000

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MABEL IMBUGA (Ph. D.)

Department of Chemistry, JKUAT, P.O. Box 62000, Nairobi, Kenya.

Selected Publications

  1. Biochemical differentiation in Camellia sinensis and its wild relatives as revealed by isozyme and catechin patterns, Magoma GN, Wachira FN, Imbuga MO, et al. Biochemical Systematics and Ecology 31 (9): 995-1010, 2003
  2. Partial purification of the aminopeptidase from the midgut of the human body louse, Pediculus humanus humanus,  Ochanda JO, Oduor EAC, Galun R, et al., Physiological Entomology 25 (3): 242-246, 2000
  3. The use of catechins as biochemical markers in diversity studies of tea (Camellia sinensis), Magoma GN, Wachira FN, Obanda M, et al., Genetic Resources And Crop Evolution 47 (2): 107-114, 2000

Partial characterization and post-feeding activity of midgut aminopeptidase in the human body louse, Pediculus humanus humanus  Ochanda JO, Oduor EAC, Galun R, et al., Physiological Entomology 23 (4): 382-387, 1998
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KERIKO J. M. (Ph. D.)

Department of Chemistry, JKUAT, P.O. Box 62000, Nairobi, Kenya.

Selected Publications

  1. High levels of n-3 polyunsaturated fatty acids in Euphausia pacifica and its role as a source of docosahexaenoic and icosapentaenoic acids for higher trophic levels, Saito H, Kotani Y, Keriko JM, et al. Marine Chemistry 78 (1): 9-28, 2002
  2. The in vitro anti-fungal and anti-bacterial activities of beta-sitosterol from Senecio lyratus (Asteraceae), Kiprono PC, Kaberia F, Keriko JM, et al. Zeitschrift Fur Naturforschung C-A Journal Of Biosciences 55 (5-6): 485-488, 2000
  3. Eicosanyl p-coumarates from a Kenyan plant, Psiadia punctulata: Plant growth inhibitors,  Keriko JM, Nakajima S, Baba N, et al. Bioscience Biotechnology And Biochemistry 61 (12): 2127-2128, 1997
  4. Keriko JM , Nakajima S, Baba N, et al. A Plant-Growth Regulator From Vernonia-Auriculifera (Asteraceae) Zeitschrift Fur Naturforschung C-A, Journal of Biosciences 50 (5-6): 455-458, 1995

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MOI UNIVERSITY

KIPRONO C. P. (Ph. D.)

Department of Chemistry, Moi University, P.O. Box 1125 Eldoret, Kenya.

Fax: 254-321-63257; Email: paulkiprono@yahoo.com

Selected Publications

  1. Larvicidal activity of myricoidine from Clerodendrum myricoides,  Kebenei JS, Ndalut PK, Kiprono CP. Bulletin of the Chemical Society of Ethiopia 18 (2): 225-227, 2004
  2. Larvicidal benzoquinone from Embelia schimperi,  Kiprono CP, Midiwo JO, Kipkemboi PK, et al. Bulletin of the Chemical Society of Ethiopia 18 (1): 45-49, 2004

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KIPKEMBOI P.K. (Ph. D.)

Department of Chemistry, Moi University, P.O. Box 1125 Eldoret, Kenya.

Fax: 254-321-63257

Selected Publications

  1. Kiprono CP, Midiwo JO, Kipkemboi PK, et al. Larvicidal benzoquinone from Embelia schimperi Bulletin of The Chemical Society of Ethiopia 18 (1): 45-49, 2004 Kipkemboi PK , Kiprono PC, Sanga JJ
  2. Vibrational spectra of t-butyl alcohol, t-butylamine and t-butyl alcohol plus t-butylamine binary liquid mixtures. Bulletin of the Chemical Society of Ethiopia 17 (2): 211-218, 2003
  3. Kipkemboi PK , Kiprono PC, Easteal AJ Proton nuclear magnetic resonance study of water plus t-butyl alcohol, water plus t-butylamine and water plus t-butyl alcohol plus t-butylamine mixtures Bulletin of the Chemical Society of Ethiopia 16 (2): 187-198, 2002
  4. Kipkemboi PK , Easteal AJ Vibrational spectroscopic studies of aqueous solutions of tert-butyl alcohol and tert-butylamine Canadian Journal of Chemistry-Revue Canadienne De Chimie 80 (7): 789-795, 2002
  5. Kipkemboi PK , Easteal AJ Viscometric studies for some 1 : 1 electrolytes in water plus tert-butyl alcohol and water plus tert-butylamine mixtures at 298.15 K Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry 41 (6): 1139-1145, 2002