| Autor: |
Sherrit, Stewart, Noell, Aaron C., Fisher, Anita, Lee, Mike C., Nobuyuki Takano, Xiaoqi Bao, Kutzer, Thomas C., Grunthaner, Frank |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; 2017, Vol. 88 Issue 11, p114101-1-114101-9, 9p, 4 Color Photographs, 2 Black and White Photographs, 1 Diagram, 4 Graphs |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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