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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Environmental assessment in the prelaunch phase of Hayabusa2 for safety declaration of returned samples from the asteroid (162173) Ryugu: background monitoring and risk management during development of the sampler system

Fig. 5

Representative profiles of the static accumulation of ambient aerial deposits onto the monitor coupons (Nos. 1–12, including STA1, SFA2, and VAB): a sodium (Na) and total organics, b potassium (K) and ionized chloride (Cl−), c zinc (Zn) and sulfate (SO42−), and d calcium (Ca) and ionized nitrate (NO3−). e Principal component loading using the correlation matrix (Table 5) of the major components in the static monitoring data of CPS1-12 (n = 10) and CAS1-12 (n = 10), as shown in Table 6. Aluminium was used for storage and packaging of the samples, which may have resulted in higher background values

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