Fuzzy liquid analysis by an array of nonspecifically interacting reagents: The taste of fluorescence

: Pekka E Hänninen, Joonas J Siivonen, Pave I Väisänen, Satu A Tiittanen, Mirva M Lehmusto, Timo Teimonen, Niklas Törnkvist, Mari A Sandell, Antti J Knaapila, Paul Mundill, Harri J Härmä

Publisher: The Americal Chemical Society

: 2013

: Journal of the American Chemical Society

: JAOCS

: 20

: 135

: 20

: 7422

: 7425

: 4

: 0002-7863

DOI: https://doi.org/10.1021/ja401726d

: http://api.elsevier.com/content/abstract/scopus_id:84878240346

Complex or unknown liquid analysis requires extensive instrumentation and laboratory work; simple field devices usually have serious limitations in functionality, sensitivity, and applicability. This communication presents a novel, effective, and simple approach to fingerprinting liquids. The method is based on nonspecific interactions of the sample liquid, a long lifetime luminescent europium label, and various surface modulators in an array form that is readily converted to a field analysis μTAS system. As compared to existing e-nose or e-tongue techniques, the method is unique both in terms of sensitivity and usability, mainly due to the well-known unique properties of the europium label. This communication demonstrates the use of this new method in distinguishing different wines, waters, alcohols, and artificially modified berry juices.

Chemical sciences