Detection of Heavy-metal Ions Based on Evaporative Concentration Using a Super-hydrophobic Surface

• Yanagimachi Isao

  Graduate School of Pure and Applied Sciences, University of Tsukuba

• Nashida Norihiro

  Graduate School of Pure and Applied Sciences, University of Tsukuba

• Iwasa Koichiro

  Kyoto Research Laboratories, Sekisui Chemical Co., Ltd.

• Suzuki Hiroaki

  Graduate School of Pure and Applied Sciences, University of Tsukuba

抄録

A concentrator chip which could detect a variety of heavy-metal ions was fabricated. To improve the detection sensitivity, a droplet of a sample solution was concentrated evaporatively using a super-hydrophobic surface formed with polytetrafluoroethylene (PTFE) beads. The system consists of a working electrode at the center, surrounded by an Ag/AgCl reference electrode. Square-wave anodic stripping voltammetry was conducted using concentrator chips with different working electrode materials. A significant increase in peak height was observed as the sensitive area decreased and the volume of the droplet increased. When a 5-μl droplet was used, the detection limit for lead, cadmium, and arsenic ions was 1 ppb.

収録刊行物

• 電気学会論文誌Ｅ（センサ・マイクロマシン部門誌）

  電気学会論文誌Ｅ（センサ・マイクロマシン部門誌） 126 (7), 356-357, 2006

  一般社団法人 電気学会

キーワード

• polytetrafluoroethylene (PTFE)
• super-hydrophobicity
• heavy metal
• anodic stripping voltammetry

詳細情報

• CRID: 1390001204460558592
• NII論文ID: 10017600676
• NII書誌ID: AN1052634X
• DOI: 10.1541/ieejsmas.126.356
• ISSN: 13475525
• ISSN: 13418939
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas/126/7/126_7_356/_pdf
• 本文言語コード: en
• データソース種別:
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可