Announcement

Title Description
Flyer WORKSHOP ON INTRODUCING THE KENYA NATIONAL NMR CENTRE (KNMRC)

The Department of Chemistry in collaboration with Vision Scientific, Magritek and NRF Kenya are organising a virtual workshop  on Introducing The Kenya National Magnetic Resonnance (NMR) Center of Excellence.

The details of the workshop are:

Date: August 12th 2021

Time: 10:00 am - 1.00 pm 

Please click here to register

MENTORSHIP WEBINAR ON ‘TOWARDS EXCELLENCE OF POSTGRADUATE FEMALE STUDENTS IN STEM FOR THE CELEBRATION OF UON@50 ON 25TH JUNE 2021 AT 1.00-5.00PM

Graduate School in conjunction with the Department of Chemistry and in collaboration with International Science Program (ISP), Sweden through KEN 01 Project is organizing a webinar on the above topic on 25th June 2021 at 2.00-5.00PM.  
The theme of the webinar will be : Resilience and Resolution: Keys for a STEM Woman to Unlock the Door to a Successful Career

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Upcoming Graduation Ceremony

The University of Nairobi wishes to inform all students from colleges including the College of Biological and Physical Sciences who shall qualify for the award of various degrees and diplomas at the end of this academic year (2020/2021) that the next graduation ceremony will be held in September 2020. The exact date will be communicated. 

Postgraduate Seminar, Friday 14th May, 2021

By Emily Karanja, MSc Candidate

Assessment of the Impact of Plastic Pollution on the Levels of Bisphenol A and Di-Butyl Phthalates in Water, Soil, Sediment and Weeds along the Kenyan Coastal Beaches.

 

ABSTRACT

Plastic materials have received global attention due to worldwide plastic pollution in marine and freshwater environment, and associated hazardous substances released from plastic wastes into water resources, air and soil. Bisphenol A (BPA) and phthalates are some of the toxic compounds from plastics and are associated with endocrine-disruption in human and wildlife. Phthalates function mainly as plasticizers giving flexibility to polymers with high molecular weights, while bisphenol A is part of the key chemical component in the production of epoxy resins, polycarbonate plastics as well as brominated flame retardants (BFRs). The objective of this study was to determine the impact of plastic pollution on the levels of Bisphenol A and Di-butyl phthalates along the coastal beaches of Mombasa, Kilifi, Malindi and Sabaki estuary. Water, weed, soil and sediment were sampled quarterly for chemical analysis between the months of October 2019 and January 2020. Extraction, clean-up and analysis of BPA and DBP was done at the Pesticide Analytical Laboratory at the University of Nairobi using Agilent 6890 coupled to 5973 Mass selective Detector. Levels of BPA were detected in different ranges with few sites recording below detection limit (BDL). Weed samples recorded the highest values during the wet season in Mombasa with a value of 11.66±0.94 ng/g followed by Pirates at 5.91±0.92 ng/g residue levels. During the dry season, Mombasa recorded the highest level of BPA in water samples with 0.429±0.01ng/g and 2.737±0.97 ng/g during the wet season followed by Pirate with 2.238±0.01 ng/g. During the dry season, soil samples recorded the highest concentration of BPA in Sabaki River, Malindi, Mombasa and pirate with 3.24±1.05 ng/g, 2.867±0.62 ng/g, 2.707±2.45 ng/g and 1.338±1.04ng/g respectively. Soil samples during the wet season recorded BPA levels BDL in most sites including pirate. The wet season recorded higher reading in sediment samples than in dry season, where Malindi had the highest of all with 3.765±1.17 ng/g followed by Sabaki Ocean with 3.532±0.42 ng/g. Mombasa and kilifi beaches recorded the highest BPA levels during the dry season of 1.357±0.41 ng/g and 1.294±0.12 ng/g respectively.  Di-butyl phthalate was only detected in Mombasa and Pirates Beaches with soil at higher level of 39.75±0.91 ng/g followed by Mombasa 18.53±0.29 ng/g. Pirate beach had higher readings of DBP in soil samples than in Mombasa and the same applied to sediment, weed and water samples. The rest recorded BDL levels of DBP in all the other samples except soil sample during the dry season while these two sites recorded some amount of DBP during the wet season. Except for pirates and Mombasa, the rest of the sites recorded BDL levels of DBP in water sample during the wet season with 1.291±0.13 ng/g and 0.786±0.22 ng/g respectively.  During the wet season, Pirate recorded the highest level of DBP in weed samples with 1.491±0.25 ng/g, followed by Mombasa with 0.533±0.39 ng/g, and the rest of the sites recording BDL. All the other sites recorded BDL residue levels in dry season. The rest of the sites recorded BDL levels of DBP in the sediment samples analysed during the wet season except for Pirate and Mombasa which recorded 3.040±1.38 ng/g and 2.181±0.49 ng/g, while in dry season the DBP recorded BDL levels in all sites. Except for Pirate and Mombasa, the rest of the sites recorded BDL levels of DBP in the soil samples analysed in both seasons .During the wet season the highest concentration was from pirate soil, followed by Mombasa with 7.556±0.63ng/g and 4.252±0.89ng/g respectively. BPA with high detection frequency of 87.75% than DBP at 17.86% may be due to different sources of these two analytes in the sampling sites. The differences was due to differences in the sampling location and season, environmental factors and physical chemical properties of the contaminant. Therefore awareness creation to educate industries and the public should be done regularly to prioritize sound environmental management of plastics disposal. The information obtained from this study provides baseline data on the levels of Bisphenol A and Di-butyl phthalates in marine environments in Kenya.

photo University of Nairobi Research Week 2021: First Call for Papers

The 4th Annual University of Nairobi Annual Research Week 2021 brings together 14+ conferences covering a diverse range of academic disciplines, one of which is bound to meet your interest and area of expertise. Now in its fourth year, the conferences provide a forum to present your work, engage with your colleagues, and learn about the latest developments in your field. 

For students, especially PhD students, Research Week 2021 provides an ideal forum to present and receive positive critique on your work before you submit it for journal publication, or before your dissertation defence.

DUE to the on-going COVID-19 Pandemic we are again VIRTUAL this year.

This is the FIRST CALL FOR PAPERS for the various conferences. Details on each conference can be found on Research Week 2021’s official homepage at:  https://uonresearch.org/researchweek2021/

Please circulate widely among your networks.

UON PRIZE GIVING 2020/21

The University of Nairobi wishes to invite Prize Recipients and Donors to the Prize Presentation Ceremony for the 2017/2018 & 2018/2019 academic years that will be held on Friday, 7th May 2021 in Taifa Hall. This will be a Virtual Ceremony. Our esteemed donors are invited to present the prizes and trophies during the ceremony. Please confirm your attendance with the office of the Academic Registrar on Telephone 020 491 3027 or email uonprizes@uonbi.ac.ke. Guests should be seated/logged in by 9.00 a.m.

ksc Kenya Chemical Society Nairobi Chapter Virtual Workshop

Invitation to a virtual workshop which will be held on the 8th of May 2021 starting from 10.00 am. Kindly diarize and plan to attend.

More details will follow shortly.

Please send your confirmations to mnoah@usiu.ac.ke

Oil Organic Essential Oil Produced by the Department of Chemistry


The Department of Chemistry  wishes to announce that they  are  now producing organic Eucalyptus  globulus oil which  is  an effective therapy for respiratory infections including Covid19. Eucalyptus oil is also very helpful in providing relief for headaches , fevers , migraines, asthma, sinusitis, arthritis and ailments of the respiratory tract.

The product has been granted  KEBS approval as an organic essential oil.

The Product can be bought at the department of Chemistry, College of Biological and Physical Sciences, Chiromo.

For more information click https://chemistry.uonbi.ac.ke/Essential%20Oils

Prof. Catherine Ngila Visiting Professor Department of Chemistry: Prof. Catherine Ngila the Ag, Executive Director, African Academy of Sciences

Prof Ngila has taught various courses; First Year General Chemistry to Masters’ in Chemistry in Analytical-, Environmental- and Industrial Chemistry in various Universities. Current research on nanotechnology for water purification; and mass balance modelling in wastewater treatment plants. She is focusing on validation of analytical techniques, water quality.
Prof Ngila has trained over 100 Postgraduates including 22 Honours, 33 MSc and 30 PhD students including training of 18 Postdoctoral Fellows). Currently, she has a current research group of about 3 doctoral and 2 masters students registered at University of Johannesburg in Chemical Sciences.
She has disseminated her research findings in international conferences in more than 30 countries.