Analytical Methods for Elements Including Precious Metals and Rare Metals in Electric and Electronic Products

DOI Web Site 3 Citations 11 References Open Access
  • Kida Akiko
    Research Center of Material Cycles and Waste Management, National Institute for Environmental Studies
  • Miyazaki Tooru
    Environmental Engineering Department, Environmental Division, Nittech Research Corporation
  • Kuramochi Hidetoshi
    Research Center of Material Cycles and Waste Management, National Institute for Environmental Studies

Bibliographic Information

Other Title
  • 製品中のレアメタルを含む多元素分析法
  • セイヒン チュウ ノ レアメタル オ フクム タゲンソ ブンセキホウ

Search this article

Description

The Japanese government has recently been promoting the recycling of small end-of-life electric and electronic equipment (EEEE) while also being instrumental in the collection of precious metal contents, including rare metals in EEEEs. A standard method for a multi-elemental analysis, however, has not yet been proposed. This report presents a proposal regarding pre-standard methods for simultaneous, multi-elemental analysis (39 elements) by which a more exact recycling potential for these metals can be obtained. The proposed methods are revisions of IEC 62321, established for the regulation of six hazardous substances (lead, etc) found in electronic products as the IEC method applies to all kinds of materials, polymers, metals and electronics. Essentially, the recommended pretreatment methods are : (1) aqua-regia dissolution/alkali fusion for all metals except Ag and Ta ; (2) HF dissolution for Ta ; and (3) 6M HCl dissolution for Ag. Both ICPAES and ICPMS are recommended for measuring accurate determination and detection limits of 1 mg/kg. The methods proposed will need to be improved with minor revisions after further research.

Journal

Citations (3)*help

See more

References(11)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top