« Previous AbstractOdor Recognition with a Spiking Neural Network for Bioelectronic Nose    Next AbstractHigh-throughput screening for in planta characterization of VOC biosynthetic genes by PTR-ToF-MS »

Anal Chem

Title:		Development of a Column-Shaped Fluorometric Sensor Array and Its Application in Visual Discrimination of Alcohols from Vapor Phase
Author(s):		Li M; Liu K; Wang L; Liu J; Miao R; Fang Y;
Address:		"Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi' an 710062 , P. R. China"
Journal Title:		Anal Chem
Year:		2020
Volume:		20191224
Issue:		1
Page Number:		1068 - 1073
DOI:		10.1021/acs.analchem.9b04080
ISSN/ISBN:		1520-6882 (Electronic) 0003-2700 (Linking)
Abstract:		"Portable, miniaturized, and inexpensive detectors are in high demand for detecting and discriminating volatile organic compounds (VOCs). Sensor array design and exploitation are two key issues for new detector development. In contrast to the most reported plane-shaped sensor array for gaseous analyte sensing, here we report a column-shaped fluorometric sensor array by using fluorophore-loaded silica particles ( approximately 40 mum) filled capillary. In the design, the capillary serves as test chamber and facilitates visualization. The orifices of the capillary were used as inlet and outlet for gaseous analyte. Sensing modules are installed in series, which lays foundation for their even and effective contact with the gaseous analyte. Meanwhile, further capsulation could be avoided. Silica particles were chosen as carries due to their preferred adsorption behavior to VOCs. By choosing four typical fluorophores (PBI-CB, Py-CB-Ph, Py-At, and NA-Ch) as sensing units, a 4-element fluorometric sensor array was achieved. Fluorescence of the array varied when different alcohol vapors were pumped in. The six tested alcohols could not only be distinguished as primary, secondary, or tertiary, but also be identified individually. The array had good reproducibility in visualization of the six alcohols. In addition, the orders of the fluorophores can be changed as desired. It is believed that the proofed concept provides not only a totally new design of sensor array but also contributes a new strategy for the discrimination of the alcohols as examined"
Keywords:
Notes:		"PubMed-not-MEDLINELi, Min Liu, Ke Wang, Li Liu, Jianfei Miao, Rong Fang, Yu eng Research Support, Non-U.S. Gov't 2019/12/11 Anal Chem. 2020 Jan 7; 92(1):1068-1073. doi: 10.1021/acs.analchem.9b04080. Epub 2019 Dec 24"