| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9700855 | Sensors and Actuators B: Chemical | 2005 | 4 Pages |
Abstract
A simple and low-cost optical sensor, based on porous silicon nanotechnology, has been used to detect and quantify the presence of pesticides in water and humic acid solutions. A well defined optical signal variation is registered even at low concentration as 1Â ppm. The phenomenon can be ascribed to the capillary infiltration of liquid into the pores, which makes possible to detect changes in the refractive index of the liquid solution up to 0.0002.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Luca De Stefano, Luigi Moretti, Ivo Rendina, Lucia Rotiroti,