在进行液体电离质谱分析之前，使用电喷雾质谱法和核磁共振光谱法鉴定未知表面活性剂。
Identification of unknown surfactants using electrospray mass spectrometry and NMR spectroscopy preceded by liquid ionization mass spectrometry.
作者信息
Yokoyama Yukio, Fukazawa Yoshiyuki, Ito Takashi, Sato Hisakuni
机构信息
Department of Analytical Chemistry, Faculty of Engineering, Yokohama National University, Hodogaya, Japan.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2002 May;58(7):1453-60. doi: 10.1016/s1386-1425(01)00593-5.
Commercially available but completely unknown surfactants used in the tin-lead plating industry were successfully identified by using electrospray mass spectrometry and NMR spectroscopy techniques, preceded by liquid ionization mass spectrometry used to obtain the preliminary information. The mass spectral data suggested that ethoxylated nonionic surfactants having a homologous distribution of molecular weights like 520, 564, 608, 652, 696, etc. were present. The NMR data suggested the presence of two aromatic rings and a quaternary carbon for the hydrophobe moiety instead of the well-known alkyl chains or alkylphenols. The unknown surfactants were finally concluded to be novel nonionic 4-(alpha,alpha-dimethylbenzyl)-phenol ethoxylates.
通过使用电喷雾质谱和核磁共振光谱技术，并在利用液体电离质谱获取初步信息之后，成功鉴定出了锡铅电镀行业中使用的市售但完全未知的表面活性剂。质谱数据表明存在分子量具有同系分布的乙氧基化非离子表面活性剂，如520、564、608、652、696等。核磁共振数据表明，疏水部分存在两个芳香环和一个季碳，而非众所周知的烷基链或烷基酚。最终得出结论，这些未知的表面活性剂是新型非离子4-(α,α-二甲基苄基)-酚乙氧基化物。
Zotero 插件