Shimadzu (Hong Kong) Limited, Beijing Office, Analytical Applications Center, Beijing 100020, China;
Shimadzu (Hong Kong) Limited, Beijing Office, Analytical Applications Center, Beijing 100020, China;
Shimadzu (Hong Kong) Limited, Beijing Office, Analytical Applications Center, Beijing 100020, China;
high performance liquid chromatography; on-line; column switching; sample pretreatment; plasma; serum;