A colorimetric chemical sensing platform for real-time monitoring of indoor formaldehyde

Xingcai Qin; Rui Wang; Francis Tsow; Erica Forzani; Xiaojun Xian; Nongjian Tao

doi:10.1109/JSEN.2014.2364142

A colorimetric chemical sensing platform for real-time monitoring of indoor formaldehyde

Xingcai Qin, Rui Wang, Francis Tsow, Erica Forzani, Xiaojun Xian, Nongjian Tao

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Formaldehyde is one of the most important indoor air pollutants affecting human immune system, and causing various respiratory diseases and even certain cancers. Traditional formaldehyde detection technologies are bulky, expensive and difficult to maintain. Here, we report a colorimetric chemical sensing platform for fast (2 min) and sensitive detection (30 ppbv) of formaldehyde over a wide dynamic range (0-750 ppbv). The sensor can tolerate humidity variation from 5% to 90% and is immune of common interferents, such as CO₂ (4%), SO₂ (10 ppm), NO₂ (125 ppbv), and O₃ (300 ppbv) in air. We also demonstrated continuous detection of formaldehyde on this sensing platform using disposable sensor chip.

Original language	English (US)
Article number	6930730
Pages (from-to)	1545-1551
Number of pages	7
Journal	IEEE Sensors Journal
Volume	15
Issue number	3
DOIs	https://doi.org/10.1109/JSEN.2014.2364142
State	Published - Mar 1 2015

Keywords

Colorimetric sensor
formaldehyde
gas sensor
indoor air quality

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

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10.1109/JSEN.2014.2364142

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abstract = "Formaldehyde is one of the most important indoor air pollutants affecting human immune system, and causing various respiratory diseases and even certain cancers. Traditional formaldehyde detection technologies are bulky, expensive and difficult to maintain. Here, we report a colorimetric chemical sensing platform for fast (2 min) and sensitive detection (30 ppbv) of formaldehyde over a wide dynamic range (0-750 ppbv). The sensor can tolerate humidity variation from 5% to 90% and is immune of common interferents, such as CO2 (4%), SO2 (10 ppm), NO2 (125 ppbv), and O3 (300 ppbv) in air. We also demonstrated continuous detection of formaldehyde on this sensing platform using disposable sensor chip.",

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AU - Tsow, Francis

AU - Forzani, Erica

AU - Xian, Xiaojun

AU - Tao, Nongjian

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AB - Formaldehyde is one of the most important indoor air pollutants affecting human immune system, and causing various respiratory diseases and even certain cancers. Traditional formaldehyde detection technologies are bulky, expensive and difficult to maintain. Here, we report a colorimetric chemical sensing platform for fast (2 min) and sensitive detection (30 ppbv) of formaldehyde over a wide dynamic range (0-750 ppbv). The sensor can tolerate humidity variation from 5% to 90% and is immune of common interferents, such as CO2 (4%), SO2 (10 ppm), NO2 (125 ppbv), and O3 (300 ppbv) in air. We also demonstrated continuous detection of formaldehyde on this sensing platform using disposable sensor chip.

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A colorimetric chemical sensing platform for real-time monitoring of indoor formaldehyde

Abstract

Keywords

ASJC Scopus subject areas

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