摘要
液相色谱与质谱联用的接口有多种,但结构设计简单,成本低且易于更换的,是毛细管导入型接口。 由于质谱真空系统抽速的限制,可导入离子源的液体量为:EI源0.5—3μl/min,CI源5—20μl/min。高效填充毛细管柱的流量为0.5—15μl/min,正好与绝大多数质谱仪匹配。
A simple and inexpensive interface for the coupling of packed capillary liquid chromatogra-phy and mass spectrometry is described.Because of the low flow-rate of 250μm I.D.densely packed capillary colum,it is possible to operate the MS at EI mode.Various aspects concerning the design of the interface are discussed.The applicability of this interface is limited to volatile compounds,and the detection limit is in the range of 10-50 pg/s.
出处
《色谱》
CAS
CSCD
北大核心
1991年第1期39-41,共3页
Chinese Journal of Chromatography
