| 초록 |
There is no doubt that heavy metal pollution is a worldwide environmental concern. There are several analytical methods to precisely identify metal ions and determine their concentrations, such as inductively coupled plasma. On the other hand, there has been also a continuous demand for developing simple and low-cost detection of heavy metal ions. Here, we demonstrate an efficient electrochemical method for real-time detection of metal ions in a flow system. Polypyrrole (PPy)-coated cellulose papers were used as a sensing material for selective recognition of metal ions, followed by signal transduction. The PPy papers had robust structural and high surface area, which allowed them to be used as a membrane working electrode in a flow system. Metal ions such as Hg(II), Ag(I), and Cr(III) were successfully detect at ppm levels in water. |
