TY - JOUR
T1 - Chemical Sensing in Real Time with Plants Using a Webcam
AU - Qin, Xingcai
AU - Zhu, Ying
AU - Yu, Jingjing
AU - Xian, Xiaojun
AU - Liu, Chenbin
AU - Yang, Yuting
AU - Tao, Nongjian
N1 - Funding Information:
The work was supported by National Natural Science Foundation of China (NSFC, Grants 21327008 and 21575062) and Natural Science Foundation of Jiangsu Province (BK20150574).
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/11/6
Y1 - 2018/11/6
N2 - It has been established that plants can smell and respond to chemicals in order to adapt to and survive in a changing chemical environment. Here we show that a plant responds to chemicals in air, and the response can be detected rapidly to allow tracking of air pollution in real time. We demonstrate this capability by detecting subtle color and shape changes in the leaves of mosses upon exposure to sulfur dioxide in air with a simple webcam and an imaging-processing algorithm. The leaves of mosses consist of a monolayer of cells, providing a large surface-to-volume ratio for highly sensitive chemical sensing. The plant sensor responds linearly to sulfur dioxide within a wide concentration range (0-180 ppm), and it can tolerate humidity variation (15-85% relative humidity) and chemical interference and regenerate itself. We envision that plants can help alert chemical exposure danger as a part of our living environment using low-cost CMOS imagers, and their chemical-sensing capabilities may be further improved with genetic engineering.
AB - It has been established that plants can smell and respond to chemicals in order to adapt to and survive in a changing chemical environment. Here we show that a plant responds to chemicals in air, and the response can be detected rapidly to allow tracking of air pollution in real time. We demonstrate this capability by detecting subtle color and shape changes in the leaves of mosses upon exposure to sulfur dioxide in air with a simple webcam and an imaging-processing algorithm. The leaves of mosses consist of a monolayer of cells, providing a large surface-to-volume ratio for highly sensitive chemical sensing. The plant sensor responds linearly to sulfur dioxide within a wide concentration range (0-180 ppm), and it can tolerate humidity variation (15-85% relative humidity) and chemical interference and regenerate itself. We envision that plants can help alert chemical exposure danger as a part of our living environment using low-cost CMOS imagers, and their chemical-sensing capabilities may be further improved with genetic engineering.
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U2 - 10.1021/acs.analchem.8b03863
DO - 10.1021/acs.analchem.8b03863
M3 - Article
C2 - 30277058
AN - SCOPUS:85055103651
SN - 0003-2700
VL - 90
SP - 13030
EP - 13035
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 21
ER -