Using the desalt tube "Solnac Tube" for LC/MS! TEA was removed online.
When analyzing highly polar acidic compounds using reverse phase partition chromatography, adding basic ionic species to the eluent can enhance retention by forming neutral ion pairs through ionic bonding. Common basic mobile phases used for ion pair formation in LC/MS include triethylamine (TEA) and dibutylamine (DBA). However, when detecting positive ions, it is believed that ionization suppression occurs with almost 100% probability. In this case, nicotinic acid and uracil acid were used as samples, and TEA in the sample solution was removed using a solid-phase extraction tube for positive ion measurement. For details on conditions and analysis results, please download the catalog. 【Infusion Conditions】 ■Samples: (1) Nicotinic acid 10 ppm solution, (2) Uracil acid 10 ppm solution ■Solvent: CH3CN / H2O = 50 / 50 + 0.1% TEA ■Flow rate: 0.1 ml/min *For more details, please refer to the PDF document or feel free to contact us.
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【MS Conditions (Partial)】 ■Device: JEOL JMS-T100LP ■Ionization Method: ESI Pos. ■Needle Voltage: 2000 V ■Orifice 1 Voltage: 50 V ■Desolvation Chamber Temperature: 250 ℃ *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company develops contract services utilizing our unique high-level technical expertise in imaging mass spectrometry and liquid chromatography mass spectrometry. As a venture originating from Hamamatsu University School of Medicine, we leverage our unique technology related to IMS, cultivated over many years in the Cell Molecular Anatomy course, along with our extensive experience in mass spectrometry, including a Level 5 LC/MS analyst certification, to provide high-quality mass spectrometry data.