国产国语成人毛片高清视频_乱色伦无码视频观看_日韩毛片大全_国产日韩欧美高清_992tv在线无码视频_怡红院最新免费全部视频_日韩美女牲交免费观看视频_美人妻出差被寝取中文字幕_最新热播日韩AV无码精品_一本大道av伊人久久综合蜜芽

   Nanospray is an essential tool in high-sensitivity mass spectrometry; however, limitations with sample throughput present challenges with the routine use of nanospray for quantitative applications. Current trends toward MS-based biomarker quantitation impose strict requirements on nanobore LC-MS performance. A vision-based, self-tuning source was developed to interface with gradient chromatography and automatically control emitter-tip position1. We extend this analytical format with an automated ESI column-switching methodology wherein a digital trigger control switches the emitter between two column positions. Vision-based control maintains the spray at an optimized inlet position from two different packed-tip columns as fi ne tuning of emitter position is optimized by this vision-based control.

點(diǎn)擊下載:數(shù)字化納噴源的雙柱自動(dòng)切換分析