Estimation of Some Metals in Children’s Colorful Modeling Clay Sold in the Markets of Erbil City, Kurdistan Region, Iraq
Toxic heavy metals are commonly introduced in the manufacturing of various children's products. In this study, nine different types of modeling clay brands collected from several markets in Erbil city were analyzed to assess the content of heavy metals including Cd, Cr, Cu, and Ni. The metals analyses were performed on different colors available in each of the purchased brands. Strong acids such as nitric acid (HNO3 65%), and perchloric acid (HClO4 70%) were performed to digest samples. Concentrations of the selected metals were determined using a flame atomic absorption spectrophotometer (FAAS). Data showed that numbers of examined clays samples detected with Cr, Cd Cu, and Ni metals were 0, 5, 36, and 40 out of 54 examined clay samples, respectively. Ni and Cu were found in varying concentrations in most (detected in 8 brands out of 9 collected clay brands) of the examined clay brand samples. The total of the detected metals load in the nine analysed brands were as follows; Chinese-3 (221.41 mg/kg) > Italian (75.84 mg/kg) > Chinese-4 (68.00 mg/kg) > German (61.31 mg/kg) > Chinese-6 (58.67 mg/kg) > Turkish (54.05 mg/kg) > Chinese-5 (52.51 mg/kg) > Chinese-1 (23.7 mg/kg) > Chinese-2 (23.31 mg/kg). Data confirms that the concentrations of the selected metals in whole examined samples were below European Union permissible limits (EN 71-3:2013, Category-I) for the migratable metals in pliable clay toys except one clay sample (819.2 mg/kg of Cu in blue clay color). An analysis of variance (ANOVA) was applied to find the presence of significant differences among analysed brands of modeling clay samples.
ABD-ALHAMEED, M. M. 2019. Spatial Distribution of Heavy Metals in Surface Soil Horizons Surrounding Erbil Steel Company (ESC) Areas. ZANCO Journal of Pure and Applied Sciences, 31, 32-38.
ABDULLAH, F. O., SAEED HUSSAIN, F. H. & VIDARI, G. 2017. Determination of some elements from wild Pterocephalus nestorianus Nab., growing in Kurdistan Region/Iraq using ICP-AES and ICP-MS. ZANCO Journal of Pure and Applied Sciences, 29, 83-89.
AL-QUTOB, M., ASAFRA, A., NASHASHIBI, T. & QUTOB, A. A. 2014. Determination of different trace heavy metals in children’s plastic toys imported to the West Bank/Palestine by ICP/MS-environmental and health aspects. Journal of Environmental Protection, 5, 1104-1110.
AMIN, J. K. M., JALAL, S. S. & JARJEES, F. Z. 2017. The Elemental Composition of Atmospheric Particles and Dust Fall Rate in Erbil Governorate. ZANCO Journal of Pure and Applied Sciences, 29, 38-48.
BAO, Q.-S., LU, C.-Y., SONG, H., WANG, M., LING, W., CHEN, W.-Q., DENG, X.-Q., HAO, Y.-T. & RAO, S. 2009. Behavioural development of school-aged children who live around a multi-metal sulphide mine in Guangdong province, China: a cross-sectional study. BMC public health, 9, 217.
BAZZAZ, J. N. & MUHAMMAD, G. R. 2018. Some heavy metals assessment in frozen chicken meat sold in Erbil local markets. ZANCO Journal of Pure and Applied Sciences, 30, 96-101.
BELLIVEAU, M. & LESTER, S. 2004. PVC—Bad News Comes in Threes: The Poison Plastic, Health Hazards and the Looming Waste Crisis. VA, USA: The Center for Health, Environment.
CUI, X.-Y., LI, S.-W., ZHANG, S.-J., FAN, Y.-Y. & MA, L. Q. 2015. Toxic metals in children's toys and jewelry: coupling bioaccessibility with risk assessment. Environmental Pollution, 200, 77-84.
DAHAB, A. A., ELHAG, D. E. A., AHMED, A. B. & AL-OBAID, H. A. 2016. Determination of elemental toxicity migration limits, bioaccessibility and risk assessment of essential childcare products. Environmental Science and Pollution Research, 23, 3406-3413.
DANISH. EPA. 2014. Survey and health assessment of preservatives in toys: Survey of chemical substances in consumer products [Online]. The Danish Environmental Protection Agency 124. Available: https://www2.mst.dk/Udgiv/publications/2014/02/978-87-93178-07-6.pdf [Accessed 1 March 2020].
DARWESH, D. A. 2019. Heavy metals evaluation in soil of agricultural field around a pond of gas plant in the Kurdistan Region of Iraq. ZANCO Journal of Pure and Applied Sciences, 31, 28-35.
DUFFUS, J. 2002. Heavy metals; а meaningless term. IUPAC Technical Report, Pure App Chem. 74 (5), 793–807.
EC. 2009. DIRECTIVE (2009)/48/EC of The European Parliament and the Council of the European Union on the safety of toys [Online]. Official Journal of the European Union, L 170/1. Available: https://eur-lex.europa.eu/eli/dir/2009/48/oj [Accessed 1 Feb 2020].
EC. SCHER. 2016. Final opinion on estimates of the amount of toy materials ingested by children [Online]. Public Consultation on Toy Materials Ingested by Children: Scientific Committee on Health and Environmental Risks. Available: https://ec.europa.eu/health/scientific_committees/consultations/public_consultations/scher_consultation_10_fi [Accessed 20 Jan 2020].
EN. 71-3: 2013. (British Standards) Safety of toys, Part 3: Migration of certain elements [Online]. UK: British Standards Institution. Available: https://www.intertek.com/sparkles/2013/en-71-3-2013-published-in-uk/ [Accessed 13 Mar 2020].
EN. 71-3: 2006. (British Standards) Safety of toys, Part 3: migration of certain elements [Online]. European Committee of Standardization, Brussels. Available: https://issuu.com/fandomate/docs/en71-part3 [Accessed 20 Nov 2019].
GUNEY, M., NGUYEN, A. & ZAGURY, G. J. 2014. Estimating children's exposure to toxic elements in contaminated toys and children's jewelry via saliva mobilization. Journal of environmental science and health, part A, 49, 1218-1227.
GUNEY, M. & ZAGURY, G. J. 2012. Heavy metals in toys and low-cost jewelry: critical review of US and Canadian legislations and recommendations for testing. Environmental science & technology, 46, 4265-4274.
GUNEY, M. & ZAGURY, G. J. 2013. Contamination by ten harmful elements in toys and children’s jewelry bought on the North American market. Environmental science & technology, 47, 5921-5930.
GUNEY, M. & ZAGURY, G. J. 2014a. Bioaccessibility of As, Cd, Cu, Ni, Pb, and Sb in toys and low-cost jewelry. Environmental science & technology, 48, 1238-1246.
GUNEY, M. & ZAGURY, G. J. 2014b. Children's exposure to harmful elements in toys and low-cost jewelry: characterizing risks and developing a comprehensive approach. Journal of hazardous materials, 271, 321-330.
HILLYER, M. M., FINCH, L. E., CEREL, A. S., DATTELBAUM, J. D. & LEOPOLD, M. C. 2014. Multi-technique quantitative analysis and socioeconomic considerations of lead, cadmium, and arsenic in children’s toys and toy jewelry. Chemosphere, 108, 205-213.
ISMAIL, S. N. S., MOHAMAD, N. S., KARUPPIAH, K., ABIDIN, E. Z., RASDI, I. & PRAVEENA, S. M. 2017. Heavy metals content in low-priced toys. JEAS, 5, 1499-1509.
ISO. 8124-1. 2014. Safety of Toys, Part 1: Safety aspects related to mechanical and physical properties [Online]. ISO Technical Committee 181. Available: https://www.iso.org/standard/66626.html [Accessed 28 March 2020].
ISO. 8124-3. 2010. Safety of Toys, Part 3: Migration of certain elements [Online]. ISO Technical Committee 181. Available: https://www.iso.org/standard/43471.html [Accessed 28 March 2020].
ISSA, H. M. & ALSHATTERI, A. H. 2019. Second-Hand Infant Care Plastic Products Sold in Markets of Kalar City, Kurdistan Region, Iraq: Heavy Metals Contamination and Risk Assessment. Journal of Garmian University, 6, 8-17.
JÄRUP, L. & ÅKESSON, A. 2009. Current status of cadmium as an environmental health problem. Toxicology and applied pharmacology, 238, 201-208.
KARAŚ, K. & FRANKOWSKI, M. 2018. Analysis of hazardous elements in children toys: Multi-elemental determination by chromatography and spectrometry methods. Molecules, 23, 1-17.
KIPPLER, M., TOFAIL, F., HAMADANI, J. D., GARDNER, R. M., GRANTHAM-MCGREGOR, S. M., BOTTAI, M. & VAHTER, M. 2012. Early-life cadmium exposure and child development in 5-year-old girls and boys: a cohort study in rural Bangladesh. Environmental health perspectives, 120, 1462-1468.
KORFALI, S. I., SABRA, R., JURDI, M. & TALEB, R. I. 2013. Assessment of toxic metals and phthalates in children’s toys and clays. Archives of environmental contamination and toxicology, 65, 368-381.
KUDJOE GATI, L., BOKOR, L. & OFFOH, E. 2014. Assessment of level of lead and cadmium in selected plastic toys imported from china on the Ghanaian market. Chem Mater Res, 6, 62-68.
KUMAR, A. & PASTORE, P. 2007. Lead and cadmium in soft plastic toys. Current Science, 818-822.
KUMAR DAS, S., SINGH GREWAL, A. & BANERJEE, M. 2011. A BRIEF REVIEW: HEAVY METAL AND THEIR ANALYSIS. Organization, 11, 13-18.
MARTIN, S. & GRISWOLD, W. 2009. Environmental Science and Technology Briefs for Citizens. Human Health Effects of Heavy Metals. Kansas State University, USA, 15, 1-6.
MILLER, G. Z. & HARRIS, Z. E. 2015. Hazardous metals in vintage plastic toys measured by a handheld X-ray fluorescence spectrometer. Journal of Environmental health, 77, 8-13.
OYEYIOLA, A. O., AKINYEMI, M. I., CHIEDU, I. E., FATUNSIN, O. T. & OLAYINKA, K. O. 2017. Statistical analyses and risk assessment of potentially toxic metals (PTMS) in children’s toys. Journal of Taibah University for Science, 11, 842-849.
SINDIKU, O. & OSIBANJO, O. 2011. Some priority heavy metals in children toy's imported to Nigeria. J Toxicol Environ Health Sci [Internet], 3, 109-15.
STANLEY, M., ROBILLARD, K. & STAPLES, C. 2003. Series Anthropogenic Compounds, Phthalate Esters, the Handbook of Environmental Chemistry. Springer Berlin Heidelberg Berlin, Heidelberg.
TURNER, A. 2018. Concentrations and migratabilities of hazardous elements in second-hand children’s plastic toys. Environmental science & technology, 52, 3110-3116.
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