Pesticides detection in water and humic solutions using porous silicon technology

被引：20

作者：

De Stefano, L

Moretti, L

Rendina, I

Rotiroti, L

机构：

[1] CNR, Inst Microelect & Microsyst, Dept Napoli, I-80131 Naples, Italy

[2] Univ Mediterranea, I-89060 Reggio Di Calabria, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 111卷

关键词：

porous silicon; pesticides; chemical sensor; optical microcavities;

D O I：

10.1016/j.snb.2005.03.047

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 1 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. (c) 2005 Elsevier B.V. All rights reserved.

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收藏

页码：522 / 525

页数：4

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