| 聚氧乙烯型非离子表面活性剂的电喷雾质谱行为 |
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| 引用本文： | 刘壮峻,陈卫东,朱凤英,王复.聚氧乙烯型非离子表面活性剂的电喷雾质谱行为[J].医学教育探索,2005(6):825-828. |
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| 作者姓名： | 刘壮峻 陈卫东 朱凤英 王复 |
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| 作者单位： | 华东理工大学分析测试中心,上海200237 |
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| 摘 要： | 聚氧乙烯型表面活性剂是一类重要的非离子型表面活性剂，易与阳离子形成加合离子M＋X]^＋。应用电喷雾飞行时间质谱仪（ESI—TOF—MS），以直接进样的方式，对壬基酚聚氧乙烯醚加合离子进行了研究。通常在谱图中可见钠、钾加合离子M＋-Na]^＋、M＋K]^＋。样品中的钠、钾离子的浓度影响对应加合离子的谱峰强度。样品中加入．MgCl2，可在谱图上观察到M＋MgCl]^＋离子的谱峰。用高分辨电喷雾质谱确定M＋18]^＋峰对应于M＋NH4]^＋。
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| 关 键 词： | 壬基酚聚氧乙烯醚 电喷雾质谱 表面活性剂 加合离子 |
| 收稿时间： | 2004/12/28 0:00:00 |
Electrospray Ionization Mass Spectrometric Behavior of Ethoxylates Surfactant |
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| LIU Zhuang-jun,CHEN Wei-dong,ZHU Feng-ying,WANG Fu.Electrospray Ionization Mass Spectrometric Behavior of Ethoxylates Surfactant[J].Researches in Medical Education,2005(6):825-828. |
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| Authors: | LIU Zhuang-jun CHEN Wei-dong ZHU Feng-ying WANG Fu |
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| Institution: | Analysis and Research Center, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Etyoxylates are an important group of nonionic surfactants.A method of direct infusion analysis by electrospray ionization(ESI) time-of-flight(TOF) mass spectrometry(MS) has been used to determine nonylphenol ethoxylates(NPEO) adducts. Common sodium and potassium adducts~+,~+ were observed in spectrum.With the addition of MgCl_2,NPEO form the adduct of M+MgCl]~+.Through comparison of spectra,addtion of various amount of K~+ into NPEO samples could display the change of peak intensity between ~+ and ~+.ESI/MS high-resolution spectrum was used to confirm corresponding to M+NH_4]~+. |
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| Keywords: | nonylphenol ethoxylates ESI/MS surfactant adduction |
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