Research Papers/Topics in Analytical Chemistry

Determination of Vanillin and its Adulterants in Consumer Ice cream using High Pressure Liquid Chromatography

AbstractThe paper focuses on the determination of the concentration of vanillin in six types of ice creams purchased from supermarkets Aldi and Sainsbury’s. Similar areas of research haven’t calculated the extraction efficiencies of their proposed methods. In addition to there being no extensive attempts to determine if any adulterants within the selected vanilla ice creams are present. 

An Assessment Of Ph, Toxic And Essential Plant Elements In Greywater From Selected Households In Kenyatta University, Kenya

Kenya is experiencing acute water shortage resulting to water rationing, conflict among water users, increased water prices among others. Therefore, there is need for water conservation. One of the water conservation methods available today is greywater reuse. Greywater is domestic wastewater generated from kitchens, bathrooms, and laundry activities. According to World Health Organization (WHO) each household in capital cities of most countries produces an average greywater flow of 356...

Assessment Of The Levels Of Selected Skin Lightening Agents In Cosmetics Marketed In Mombasa County, Kenya

The practice of skin-lightening has reached epidemic levels in many nations around the globe, and especially in many African countries. In Kenya, the practice is common in major urban centres like Nairobi, Kisumu, Eldoret and Mombasa. The skin lightening cosmetics occur in various forms including topical creams, soaps and bleaching powders. Ingredients such as hydroquinone (HQ), mercury (Hg), arbutin (ART), kojic acid (KA), ascorbic acid (AA), magnesium ascorbyl phosphate (MAP) are used...

Health Risk Assessment Of Selected Essential And Non-Essential Elements In Food Crops Grown In Kibra Slum, Nairobi-Kenya

Peri-urban agriculture of food crops is practiced in many cities in developing countries, often involving the use of contaminated water and soils, thereby posing health risks for the consumers. Chemical pollutants such as metals present in minute quantities become part of the food chain through occupational exposure in industrial activities, biomagnification and bioaccumulation. In Nairobi City, peri-urban agriculture is practiced in many slum areas, including Kibra slum. Kibra slum...

Determination Of Levels Of Essential Elements, Lead And Lead Risk Exposure Factors In Adult Males Using Finger Nails And Scalp Hair

Essential elements are those elements which even in small amounts play important roles as far as healthy animal or plant life is concerned. Lead is a heavy metal with no known biological function in the body. Various biopsy materials for example teeth, scale, blood and other body fluids have for a long time been used to assess Pb exposure as well as the levels of essential elements in the body. Hair and nails are more attractive indicators since the analysis is economical and not suscep...

Zeolitic Materials From Rice Husks And Water Hyacinth For Removal Of Lead, Cadmium, Methylene Blue And Suspended Particles From Wastewater

ABSTRACT About 17.2 million people in Kenya have no access to clean water. The major factors contributing to lack of clean water include rapid population growth, droughts, forest degradation, poor management of water supply and water contamination. Lack of clean water may worsen as industrial development and population grows as projected if drastic measures are not taken immediately. Use of rice husks and water hyacinth that is known to contaminate and jam water bodies to create water t...

Clarification Of Colloidal And Suspended Material In Water Using Triethanolamine Modified Maize Tassels

ABSTRACT Suspended particles in water are a major concern in global pollution management. These particles are very small and are evenly distributed in the water. They originate from factors such as decomposing organic materials and algae. They are a significant factor in the water clarity, as they limit penetration of sunlight; provide a good environment for bacterial growth, contributing to fouling and unpleasant odours that compromise aesthetic appreciation of the water. They also com...

Effects Of Soil Amendments And Soil Physicochemical Properties On Cadmium And Lead Uptake In Tobacco Grown In Migori County, Kenya

ABSTRACT Tobacco is a heavy metal accumulator and it is estimated that 1.22 billion people are involved in smoking tobacco while about 1.45 billion people are predicted to be smoking it by 2045. Smoking tobacco results in 5 million premature deaths yearly as a result of tobacco related illness; with 70% of the deaths occurring in developing countries, Kenya included. Tobacco has heavy metals and carcinogens that make it a leading cause of deaths in the world. Tobacco easily uptakes heav...

Essential Trace Element Levels In Sesuvium Portulacastrum, Soil And Water Along Kwale County Coastline And Community Utilization Of The Plant

ABSTRACT Many underutilized indigenous foods contain high levels of essential trace elements some of which have immunological effect, and play important roles in many metabolic and enzymatic functions in man. Such elements include zinc, vanadium, selenium, chromium and iodine among others. If sustainably exploited, they would cost-effectively promote good health and thus reduce the medical bills. There is need therefore to analyze for these essential trace elements in foods, and especi...

Assessment Of Levels Of Monosodium Glutamate, Aspartame And Sodium Benzoate In Some Chili And Tomato Sauces In Nairobi County, Kenya

ABSTRACT Food additives are substances that are added to food or animal feeds during processing or storage. They are usually added to preserve or improve the quality of the food or feed. They include antioxidants, preservatives, stabilizers, coloring and flavoring agents. Food additives that are present in sauces include monosodium glutamate (MSG), saccharin, aspartame, sorbic acid and sodium benzoate. Chili and tomato sauces are extensively used by both young and old in processed f...

Assessment Of Community Awareness, Physicochemical Parameters, Organic Contaminants And Toxic Metals Of Alcoholic Beverages In Muthithi, Murang'a County, Kenya

ABSTRACT Brewing is an ancient industry that dates back 9000 years and to date more than 100 billion liters of beer are consumed annually. In Kenya alcoholic beverages industry is more liberal with the previously referred to as ‘illicit alcoholic beverages’ being legalized in November 2010, by the passing of Alcohol Law (Mututho Law). Production and consumption of some alcoholic beverages has been on increase partly due to high cost of commercial alcoholic drinks. People have died, ...

Determination Of Selected Trace Elements And Beta-Carotene In Fresh And Dried Indigenous Vegetables As Potential Food Supplement From Kiambu, Kenya

ABSTRACTPopulation growth, shortage of food due to unpredicted weather coupled with HIV/AIDS has increased nutritional deficiencies in people living in developing world. Use of micronutrients presents a low-cost strategy for achieving large reductions in death caused by malnutrition. The indigenous green leafy vegetables are of much importance among food crops as they provide adequate amounts of vitamins, immune boosting trace elements and anti-oxidants. The nutritional value of the indigenou...

Assessment Of Levels Of Some Active Skin Lightening Compounds In Selected Facial Creams And Soaps In The Kenyan Market

ABSTRACTCosmetics are generally used to improve the appearance by the removal or correction of blemishes and to treat diseases of the human skin and hair. Skin-lighteners which include hydroquinone, mercury, arbutin, kojic acid, ascorbyl glucoside, magnesium ascorbyl phosphate have been frequently used in skin lightening creams and soaps. However chronic exposure to mercury compounds in skin lightening creams and soaps may lead to various disorders such as nephritic, peripheral neuropathy, an...

Analysis Of Essential Trace Elements In Selected Medicinal Plants Used In Kenya

ABSTRACTKenya is endowed with nature where hundreds of medicinal plants are available. During photosynthesis and respiration process in plants, animals and other organisms, ions of metal elements play a major role with a few of the elements being essential to the body as nutrients. Trace elements Zn, Cr, V and Se with known immunological response and healing properties were analysed from selected medicinal plants available in Kenya. These plants were; Prunus africana, Urtica massaica, Maytenu...

Assessment Of Heavy Metal Pollution In Soils And Water Of Samburu County, Kenya

ABSTRACTHeavy metal pollution in soil and water arising from anthropogenic sources continue to pose a great challenge to human and animal population. In Samburu County conflicts arising from cattle rustling, military trainings in the county which have led to heavy use and disposal of arms, a growing population without proper sewerage facilities, increase in the number of aging automobiles and fertilizers from the wheat and barley farms in the highlands of Lorroki are the biggest contributors ...


1 - 15 Of 71 Results