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Compositional Characterization of Nitrogen Compounds in Changqing Crude Oil and Its Heavy Distillate
The nitrogen-containing compounds in Changqing crude oil,its atmospheric residue(AR),and vacuum reside(VR)were character......
以固相法合成的三乙四胺钴配合物为研究体系,采用正离子电喷雾串联质谱、紫外-可见吸收光谱、拉曼共振光谱和红外光谱等表征手段,......
用反相高效液相色谱（RP-HPLC-UV）和电喷雾飞行时间质谱（ESI-TOF/MS）鉴定商品化胰岛素注射液中的胰岛素。使用反相C18微柱（2.1mm×30......
