Digestion of Plastic Materials for the Determination of Toxic Metals with a Microwave Oven for Household Use
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Accession number;06A0104549
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| Title;Digestion of Plastic Materials for the Determination of Toxic Metals with a Microwave Oven for Household Use |
| Author;
SAKURAI HIROKI
(Chiba Univ., Chiba, Jpn)
NORO JUNJI
(Nissan Arc, Ltd., Yokosuka, Jpn)
KAWASE AKIRA
(Sii Nano Technol. Inc., Tokyo, Jpn)
FUJINAMI MASANORI
(Chiba Univ., Chiba, Jpn)
OGUMA KOICHI
(Chiba Univ., Chiba, Jpn)
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Journal Title;Anal Sci
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Journal Code:G0673B
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ISSN:0910-6340
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VOL.22;NO.2;PAGE.225-228(2006)
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| Figure&Table&Reference;FIG.1, TBL.4, REF.22 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A rapid sample-digestion method for the determination of toxic metals, cadmium, chromium, and lead, in polyethylene and polyvinyl chloride has been developed by using a microwave oven for household use. An appropriate amount of the sample taken in a PTFE decomposition vessel was mixed with nitric acid or nitric and sulfuric acids. The vessel was heated in a microwave oven by a predetermined operating program. The digested sample was diluted to a definite volume with water after evaporating most of the nitric acid. The precipitate, if formed, was filtered off by a membrane filter. The metals were determined by ICP-AES. The sample digestion required 5 min (for 20-mg sample) to 25 min (for 60-mg sample). The analytical results obtained for cadmium, chromium, and lead in a polyethylene certified reference material, BCR-680, digested with nitric acid, were in good agreement with the certified values. (author abst.) |
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