4.6 Review

Mitigation of Humidity Interference in Colorimetric Sensing of Gases

Journal

ACS SENSORS
Volume 6, Issue 2, Pages 303-320

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acssensors.0c01644

Keywords

colorimetric sensor; humidity interference; gas sensor; environmental sensor; colorimetric sensor array; hydrophobicity; volatile organic compound; air pollutant; breath biomarker

Funding

  1. National Institutes of Health (NIH) [4R44ES029006-02, 5R44ES029006-03]

Ask authors/readers for more resources

Colorimetric sensing technologies are widely used for gas sensing, but the humidity interference is a common challenge that needs to be addressed for real-world applications.
Colorimetric sensing technologies have been widely used for both quantitative detection of specific analyte and recognition of a large set of analytes in gas phase, ranging from environmental chemicals to biomarkers in breath. However, the accuracy and reliability of the colorimetric gas sensors are threatened by the humidity interference in different application scenarios. Though substantial progress has been made toward new colorimetric sensors development, unless the humidity interference is well addressed, the colorimetric sensors cannot be deployed for real-world applications. Although there are comprehensive and insightful review articles about the colorimetric gas sensors, they have focused more on the progress in new sensing materials, new sensing systems, and new applications. There is a need for reviewing the works that have been done to solve the humidity issue, a challenge that the colorimetric gas sensors commonly face. In this review paper, we analyzed the mechanisms of the humidity interference and discussed the approaches that have been reported to mitigate the humidity interference in colorimetric sensing of environmental gases and breath biomarkers. Finally, the future perspectives of colorimetric sensing technologies are also discussed.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available