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A microfluidic sub-critical water extraction instrument.
- Source :
-
The Review of scientific instruments [Rev Sci Instrum] 2017 Nov; Vol. 88 (11), pp. 114101. - Publication Year :
- 2017
-
Abstract
- This article discusses a microfluidic subcritical water extraction (SCWE) chip for autonomous extraction of amino acids from astrobiologically interesting samples. The microfluidic instrument is composed of three major components. These include a mixing chamber where the soil sample is mixed and agitated with the solvent (water), a subcritical water extraction chamber where the sample is sealed with a freeze valve at the chip inlet after a vapor bubble is injected into the inlet channels to ensure the pressure in the chip is in equilibrium with the vapor pressure and the slurry is then heated to ≤200 °C in the SCWE chamber, and a filter or settling chamber where the slurry is pumped to after extraction. The extraction yield of the microfluidic SCWE chip process ranged from 50% compared to acid hydrolysis and 80%-100% compared to a benchtop microwave SCWE for low biomass samples.
Details
- Language :
- English
- ISSN :
- 1089-7623
- Volume :
- 88
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- The Review of scientific instruments
- Publication Type :
- Academic Journal
- Accession number :
- 29195408
- Full Text :
- https://doi.org/10.1063/1.4999932