A Simple and Highly Sensitive Colorimetric Detection Method for Gaseous Formaldehyde

被引：230

作者：

Feng, Liang ^{[1
,2
]}

Musto, Christopher J. ^{[1
]}

Suslick, Kenneth S. ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 12期

关键词：

OPTOELECTRONIC NOSE; SEEING SMELLS; SENSOR; REAGENTS; SYSTEM;

D O I：

10.1021/ja910366p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A colorimetric detection method using amine-functionalized polymer films doped with a pH indicator has been developed for the rapid, sensitive, and quantitative detection of gaseous formaldehyde at concentrations well below the immediately dangerous to life or health (IDLH) limit. In 1 min, visible color changes are easily observed, even down to the permissible exposure limit (PEL) at 750 ppb. The limit of detection is below 50 ppb (7% of the PEL) after 10 min of exposure. This sensor is essentially unaffected by changes in humidity or temperature (4 to 50 degrees C) and is not sensitive to common interferents.

引用

页码：4046 / +

页数：3

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