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Determination of Heavy Metal in Polyurethane by New Digestion Method and ICP-AES
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2004, v.17 no.4, pp.363-367
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(2004). Determination of Heavy Metal in Polyurethane by New Digestion Method and ICP-AES. Analytical Science and Technology, 17(4), 363-367.
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Abstract
A simple and convenient digestion method was developed for the determination of heavy metal in polyurethane sample using only nitric acid in open system without heating. This digestion method had prevented loss of volatile elements of Hg and As and reduced the pretreatment time for the sample digestion. The detection limit is lowered over 10 times than that of microwave digestion method. Recoveries in polyurethane material were 108% for As, 96 ~ 99% for Hg, 102 ~ 103% for Cr, 98 ~ 102% for Pb, 86 ~ 90% for Cd, and 90 ~ 93% for Cu.
- keywords
- polyurethane, digestion, heavy metal
Reference
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(December1996.) Microwave assisted acid digestion of siliceous and organically based matrices,
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