Abstract
Hair samples from junior high school students in metropolitan areas of Taichung, Taiwan were tested for a total of 13 elements, Al, Ag, Br, Cl, Cr, Fe, K, La, Mn, Na, Sc, Se, and Zn by instrumental neutron activation analysis (INAA) to establish seasonal variations, gender and environmental exposures. The seasonal variations of hairs in 39 healthy students (18 males and 21 females; age 13.3 ± 0.4 years; height, 158.0 ± 4.1 cm; weight, 53.4 ± 5.7 kg) were collected at 1.5-month intervals for 1 year starting from late August, 2008. The concentrations of the above elements varied from 103 to 10−2 μg g−1 at different sampling times. A quantified index of agreement (AT) was introduced to help classify the elements. A smaller AT indicated highly consistent quantities of specific metals in the hair while a larger AT indicated increased fluctuation, i.e., less agreement. The different ATs in various hair samples were discussed. The concentrations of these elements are compared with the data in the literature.
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Acknowledgments
The authors wish to thank the junior high school children and their parents who participated in this study. A special appreciation goes to the Chemistry Teachers at Junior high school for sampling and many fruitful discussions and comments. Financial assistances were supplied by the CSMU-PGH Co-operation Fund under Contract no. 99-CSMU-PGH-03.
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Chiu, S.F., Wang, P.C., Kao, P.F. et al. Trace metals analysis of hair samples from students in metropolitan area high schools. J Radioanal Nucl Chem 289, 873–882 (2011). https://doi.org/10.1007/s10967-011-1167-y
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DOI: https://doi.org/10.1007/s10967-011-1167-y