Fig. 8From: A curation for uncontaminated Hayabusa2-returned samples in the extraterrestrial curation center of JAXA: from the beginning to present dayImpurity concentrations in the nitrogen environment of CC3-3, the CC4-1 and/or CC4-2 analyzed using the API-MS in a August 2020, b March 2021, and c March 2022. The impurity concentrations were lower than 200 ppbBack to article page