Assessment of Levels of Heavy Metals in Paints from Interior Walls and Indoor Dust from Residential Houses in Nairobi City County, Kenya
Journal Title: Chemical Science International Journal - Year 2017, Vol 21, Issue 1
Abstract
Aim: This study assessed the levels of Pb, Cr, Cd and Zn in settled indoor dust and paint chips. Study Design: Samples were obtained from twelve selected residential houses within Nairobi County, Kenya. Place and Duration of Study: GoK Laboratories, Department of Chemistry, JKUAT between February 2016 and November 2016. Methodology: A modified version of EPA method SW846 3050B was used to digest the samples, and Flame Atomic Absorption Spectrophotometer (Shimadzu AAS-6200) used to analyze samples for the metals. Pearson correlation coefficient was determined for the various metal pairs in paint chips as well as in the dust samples. Also, it was calculated for the given metals in the dust and paint chips samples from a particular sampling point. Results: The mean concentration of the metals in both the dust and paint chip samples were in the order Zn>Pb>Cr>Cd. The mean concentrations of Zn, Pb, Cr and Cd were 366.14 µg/g, 129.12 µg/g, 82.65 µg/g, and 27.40 µg/g for the dust samples and 321.77 µg/g, 289.59 µg/g, 77.54 µg/g, and 73.45 µg/g for the paint chip samples respectively. Pb, Cd, and Zn in the paint chips showed a negative relationship while Cr had a positive correlation. Conclusion: The metals in the paint chips were found to be of common origin while the correlation of the various metal pairs in the dust suggested more diverse sources. Paint from interior walls is not the only contributor of heavy metals in the settled indoor dust.
Authors and Affiliations
J. K. Ogilo, A. O. Onditi
Keywords
Related Articles
- EP ID EP319681
- DOI 10.9734/CSJI/2017/37392
- Views 78
- Downloads 0
Metabolites Detected in the Crude N-Hexane Extract of Artemisia annua Linn (Asteraceae) Cultivated in Langtang, Plateau State, Nigeria
Artemisia annua was grown in and harvested from Langtang, Plateau State in Nigeria. The dried pulverized aerial part of Artemisia annua was extracted with n-hexane by percolation and concentrated in vaccum at 40°C. Analy...
Exploring Gmelina arborea Leaves for Biofuels and Petrochemical and Pharmaceutical Feedstocks
An investigation was carried on the chemical constituents of Gmelina arborea leaves by hydrolyzing the pulverized dry leaves with 3% sulphuric acid solution at 100°C for 30 minutes. The extract on analysis with GCMS yiel...
Physico-chemical, Heavy Metals and Radioisotope Concentratios in Underground Water from Kaduna, Kafanchan and Zaria Senatorial Areas of Kaduna State, Nigeria
The Physico-chemical parameters heavy metals and radioisotopes were analysed in drinking water collected from selected wells in three senatorial areas (Kaduna, Kafanchan and Zaria) in Kaduna state. The water samples were...
Evaluation of Some Microbiological and Physico-chemical Composition of Domestic Wastewater in Rivers and Bayelsa States
Aims: This research study aims at ascertaining the inhibitive contributions of these domestic effluents even as they flow from drains into the rivers. Study Design: The microbiological and physico-chemical composition o...
Photochemical Study for Solar Energy Conversion & Storage in Solar Cell: Yellow 5GN-EDTA System
The photovoltages and photocurrent in photogalvanic cell were studied for conversion and storage of solar energy by using yellow 5GN as a photo sensitizer and EDTA as a reductant. The observed cell performance in terms o...