Inkjet-printed low-cost colorimetric tickets for TNT detection in contaminated soil

A simple colorimetric detection method for 2,4,6-trinitrotoluene (TNT) in contaminated soil has been developed. Procedurally, a TNT responsive chromogenic reagent was inkjet printed on commercially available photo paper, and the resulting colorimetric ticket was laminated with a precut patterned fil...

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Bibliographic Details
Published inThe Korean journal of chemical engineering Vol. 37; no. 12; pp. 2171 - 2178
Main Authors Lee, Myung-Goo, Yoo, Hae-Wook, Lim, Sung H., Yi, Gi-Ra
Format Journal Article
LanguageEnglish
Published New York Springer US 01.12.2020
한국화학공학회
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ISSN0256-1115
1975-7220
DOI10.1007/s11814-020-0627-x

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Summary:A simple colorimetric detection method for 2,4,6-trinitrotoluene (TNT) in contaminated soil has been developed. Procedurally, a TNT responsive chromogenic reagent was inkjet printed on commercially available photo paper, and the resulting colorimetric ticket was laminated with a precut patterned film to make a bilayer microfluidic sensor. For the TNT detection experiments, a drop of TNT solution was placed on the center of the prepared sensor. Color measurement of the sensor with a photo scanner showed a wide detection range of TNT, ranging from 14 parts per million (ppm), which is below its residential screening level (∼21 ppm) to 7,200 ppm. To further demonstrate its efficacy, TNT spiked soil samples were extracted with acetone and evaluated with the developed sensor.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-020-0627-x