TY - JOUR
T1 - Multifunctional microchip-based distillation apparatus I - Steam distillation for formaldehyde detection
AU - Hsu, Sheng Yen
AU - Liu, Chan Chiung
AU - Yang, Chia En
AU - Fu, Lung Ming
N1 - Funding Information:
This research was supported by the Ministry of Science and Technology of Taiwan ( 107-2622-B-006-007-CC2 , 106-2221-E-006-253-MY3 , and 106-2314-B-006-085-MY3 )
Publisher Copyright:
© 2019 Elsevier B.V.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/7/25
Y1 - 2019/7/25
N2 - A multifunctional microchip-based distillation apparatus for distilling and detecting formaldehyde (CH 2 O) in food products is developed. The presented apparatus comprises a disposable microchip, a steam supply system, and a recirculating cooling water supply. The microchip is formed on PMMA substrates by laser ablation and includes a sample zone, a flash distillation zone, a cooling zone, a condensation zone, and a collection zone. In the presented method, the CH 2 O sample is placed in the microchip and is vaporized by the high-throughput vapor supply and driven through the condensed zone. The condensed CH 2 O liquid is guided into the collection zone of the microchip. Finally, the distilled CH 2 O solution is determined using an AHMT spectrometry method and a paper-based RGB (red, green and blue) intensity analysis method. A distilled efficiency is as high as 98%, when a vapor stream rate is 0.4 ml/min and a distilled time is 10 min. Moreover, both detection methods show linear relationships of the corresponding CH 2 O concentrations. The actual sample suitability of the presented multifunctional microchip-based distillation apparatus is confirmed by analyzing the CH 2 O concentrations of 21 commodities.
AB - A multifunctional microchip-based distillation apparatus for distilling and detecting formaldehyde (CH 2 O) in food products is developed. The presented apparatus comprises a disposable microchip, a steam supply system, and a recirculating cooling water supply. The microchip is formed on PMMA substrates by laser ablation and includes a sample zone, a flash distillation zone, a cooling zone, a condensation zone, and a collection zone. In the presented method, the CH 2 O sample is placed in the microchip and is vaporized by the high-throughput vapor supply and driven through the condensed zone. The condensed CH 2 O liquid is guided into the collection zone of the microchip. Finally, the distilled CH 2 O solution is determined using an AHMT spectrometry method and a paper-based RGB (red, green and blue) intensity analysis method. A distilled efficiency is as high as 98%, when a vapor stream rate is 0.4 ml/min and a distilled time is 10 min. Moreover, both detection methods show linear relationships of the corresponding CH 2 O concentrations. The actual sample suitability of the presented multifunctional microchip-based distillation apparatus is confirmed by analyzing the CH 2 O concentrations of 21 commodities.
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U2 - 10.1016/j.aca.2019.02.016
DO - 10.1016/j.aca.2019.02.016
M3 - Article
C2 - 30948000
AN - SCOPUS:85062007356
SN - 0003-2670
VL - 1062
SP - 94
EP - 101
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
ER -