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Assessment of Lead, Arsenic, Cadmium and Mercury Levels in Earthenware Clay Deposits at Mankessim, in Mfantsiman District, Ghana

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1TitleTitle of DocumentAssessment of Lead, Arsenic, Cadmium and Mercury Levels in Earthenware Clay Deposits at Mankessim, in Mfantsiman District, Ghana
2CreatorAuthor's name, affiliation, country B. V. SAMLAFO
Department of Chemistry Education, University of Education, Winneba, Box 25, Winneba, Ghana
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Mankessim, Earthenware, Clay, Toxic metals, Geophagy, Pottery
4DescriptionAbstract This study assessed the suitability of Mankessim clay deposits as the raw material for earthenware products in terms of toxic metal levels such as Hg, Pb and Cd and As, which impact on human health. Atomic absorption spectrometric (AAS) technique was used to determine the levels of the toxic metals in the samples. The mean levels of Hg, Pb and Cd, were within the safe limit levels. Cadmium was however below the method?s detection limit at four sites. The mean Arsenic level was generally very high; however, this level was lower than the levels reported in some geophagy clays which were eaten directly. The precision and the accuracy of the analytical method (AAS) were evaluated by the use of standard reference material IAEA-Soil-7. The values obtained for the various elements in soil-7 compared favourably well with the recommended values as Spearman?s correlation coefficient was +0.94. The experimental values were within ?6% of the recommended value. The measurement precision defined by the relative standard deviation was within +5%. Arsenic was found to be generally high in the study site. Potters need to find ways of reducing arsenic levels before using the raw material for any product that comes into contact with food.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier DOI:10.7598/cst2018.1440
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  7 , Number  (1), (2018)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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