Details

Autor(en) / Beteiligte

• Li, Lei
• Yin, Haiwei
• Wang, Yang
• Zheng, Jianhua
• Zeng, Huidan
• Chen, Guorong

Titel

A chalcohalide glass/alloy based Ag+ ion - selective electrode with nanomolar detection limit

Ist Teil von

• Scientific reports, 2017-12, Vol.7 (1), p.16752-9, Article 16752

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2017

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• In this paper, a silver ion-selective electrode material with lower detection limit is presented. The electrode is based on 22.5As 2 S 3 -22.5Ag 2 S-55AgCl chalcohalide glass membranes. The low detection limit decreases from the micromolar range of the original Ag 2 S-As 2 S 3 electrode to the nanomolar level (1.89 nM) by introducing AgCl. The addition of AgCl increases the conductivity of the glasses and improves the analytical properties of electrodes because of the joint effects of Ag + and Cl - on network structure of the glass. The super-Nernstian response behavior was observed for the partially crystallized electrode. The electrode containing AgCl also possesses a high selectivity (except for Hg 2+ ), fast response and good stability.