Skip to main content
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Amino acids on witness coupons collected from the ISAS/JAXA curation facility for the assessment and quality control of the Hayabusa2 sampling procedure

Fig. 2

a The procedure of the amino acid analysis of the witness coupons. Each of the steps in the extraction, acid hydrolysis and derivatisation processes was conducted in flame-sealed glass ampoules to minimise any contamination. b Calibration lines for the quantification of amino acids detected on the witness coupons. Nine different concentrations of authentic amino acid standard mixtures ranging from 0.5 to 1 × 10−6 nmol/injection were analysed using GC/NPD to draw these lines. Note that the error accompanying the GC/NPD analysis was within ca. 5%

Back to article page