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Considerations of Acid Decomposition System for the Analysis of Heavy Metals in Packaging-grade Paper  

Lee, Tai-Ju (Dept. of Forest Product & Biotechnology, Kookmin University)
Ko, Seung-Tae (Dept. of Forest Product & Biotechnology, Kookmin University)
Kim, Hyoung-Jin (Dept. of Forest Product & Biotechnology, Kookmin University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.43, no.1, 2011 , pp. 65-73 More about this Journal
Abstract
The fibrous raw materials in packaging-grade paper production in Korea were mainly obtained from waste paper. The use of recycled paper has both positive and negative impacts in papermaking process. The primary positive impacts are the environmental protection and manufacturing cost reduction, and the negative impacts are the quality reduction in paper quality and the accumulation of heavy metals and other pollutants in wet- and dry-end process. This study was carried out to consider the optimum acid decomposition system with the highest recovery rate for the analysis of heavy metals in packaging-grade paper. The open digestion system using Kjeldahl apparatus and the closed digestion system using microwave oven for decomposing the organic materials in paper were compared. In both open and closed digestion method, the combination of nitric acid, hydrochloric acid and hydrogen peroxide showed higher recovery rate than using only nitric acid alone because the presence of Cl- ions in hydrochloric acid stabilizes ligand formation with metal ions. KOCC was observed to have the highest heavy metal content among the recycled paper samples. The heavy metal contents decomposed with the closed digestion system were relatively higher than with open digestion system.
Keywords
heavy metal; recycled paper; open digestion; closed digestion;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
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1 Cha, M. J., Kang, J. M. and Park, C. J., Multi-elemental analysis of hair by inductively coupled plasma/mass spectroscopy, Analytical science & technology, 15(4): 335-340 (2002).
2 김선태, 분자 분광법을 위한 시료 전처리, 자유아카데미, pp. 115-158 (2007).
3 Chung, S. Y., Kim, J. S., Kim, E. J., Park, S. K., Kim, M. H., Hong, M. K., Kim, M. C. and Lee, J. O., Trace metal contents in tea products and their safety evaluations, Korean J. food Sci. Technol, 35(5): 812-817 (2003).
4 Guler Somer and Arzu Nakisci unlu, The effect of acid digestion on the recoveries of trace elements : Recommended policies for the elimination of losses, Turk. J. Chem, 30: 745-753 (2006).
5 BS EN 12498, Paper and board - Paper and board intended to come into contact with foodstuffs - Determination of cadmium and lead in an aqueous extract, British Standards, pp. 1-5 (2005).
6 Ashwini L. Sharma, Oliver Alard, Suzy Elhlou and Norman J. pearson, Evaluation of perchloric versus nitric acid digestion for precise determination of trace and ultra trace elements by ICP-MS, J. Conference Abstracts, 5(2): 914 (2000).
7 Kim, M. H., Lee, Y. D., Kim, E. J., Chung, S. Y., Park, S. K., and Lee, J. O. ,Heavy metal contents in beverages consumed in Korea, Korean J. food Sci. Technol., 35(3): 342-346 (2003).
8 Lee, T. J., Ko, S. T., Kang, K. H. and Kim, H. J., Evaluation of wastepaper bale compositions and their fiber properties for board grade paper, J. Korea TAPPI, 41(4): 83 (2009).
9 Ko. S. T., Quantitative analysis of heavy metals in paper using liquid-liquid extraction method, Thesis of Master's degree, Kookmin University, pp. 2-9 (2009).
10 BS EN 12497, Paper and board - Paper and board intended to come into contact with foodstuffs - Determination of mercury in an aqueous extract, British Standards, pp. 1-4 (2005).
11 최병수, 류정용, 김용환, 신종호, 송봉근, 국산 골판지 고지를 재활용한 골판지 원지의 강도 극대화 기술, 한국 펄프.종이 공학회 학술발표논문집, pp. 158 (2001).
12 김형진, 이태주, 고승태, 지류포장재의 유해중금속 국제환경규제 대응기술 개발, 청정생산기술개발사업 중대형과제 최종보고서, 지식경제부, pp. 1-3 (2010).
13 Lee, H. L., Ham, C. H., Park, J. H. and Kim, J. M., Effect of cylinder / condibelt drying methods on recycling of liner boards, Proceeding of Korean Technical Assosication of the Pulp and Paper Industry, pp. 118-126 (2000).