Integrating chemical imaging of cationic trace metal solutes and pH into a single hydrogel layer

详细信息    查看全文

• 作者：Christoph Hoefer^a ; Jakob Santner^a ; ^b ; ^{jakob.santner@boku.ac.at} ; Sergey M. Borisov^c ; Walter W. Wenzel^a ; Markus Puschenreiter^a
• 关键词：Diffusive gradients in thin films ; Planar optode ; Laser ablation inductively coupled plasma mass spectrometry ; Fluorescent sensing ; Chemical imaging ; Rhizosphere
• 刊名：Analytica Chimica Acta
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：950
• 期：Complete
• 页码：88-97
• 全文大小：2687 K
• 卷排序：950

文摘

Diffusive gradients in thin films (DGT) and planar optode (PO) imaging is combined. A single hydrogel layer contains both, ion binding materials and a pH luminophore. DGT is analyzed by laser ablation ICP-MS, PO imaging uses a ratiometric method. Anion binding materials interfered with pH sensing, while the cation resin did not. Single-layer imaging is easier to handle and offers reduced artifact susceptibility.