傅立叶变换离子回旋共振质谱法分析铝材封闭剂中的成分
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摘要
该文采用傅立叶变换离子回旋共振质谱(FT-ICR-MS)技术,对一种铝材封闭剂(表面处理剂)中的未知成分进行了分析,发现了萘磺酸钠、醋酸镍、苯甲酸钠等成分。根据FT-ICR-MS测定得到的精确分子离子数据,以及同位素精细结构,推测出未知物离子分子式,再结合电感藕合等离子体质谱(ICP-MS)和气相色谱-质谱(GC-MS)分析,推断出未知成分的结构,确认其为萘磺酸钠等成分。文中还发现质谱图中有2组质量数相差62的簇离子:234.8、296.8、358.9和410.7、472.7、534.7,结合二级质谱分析,推断出这两组离子为醋酸镍与醋酸、苯甲酸加合产生的准分子离子,同时还产生二聚体、三聚体离子,合理地解析了质谱图中所出现的未知离子的归属。该研究对化工产品中未知物剖析及产品创新提供了一种新的思路和方法,并发现了镍金属离子与有机酸结合后在质谱中的离子化规律。
A fourier transform ion cyclotron resonance mass spectrometry(FT-ICR-MS) was developed for the qualitative analysis of unknown components in an imported aluminum sealer as surface treatment agent,which was processed from a variety of ingredients.Naphthalene sulfonate,nickel acetate,sodium benzoate and other components were discovered in this kind of product.Through the precise molecular ion data derived from FT-ICR-MS analysis and the isotope fine structure,the unknown material ion formula was inferred.Then,combined with inductively coupled plasma mass spectrometry(ICP-MS) and gas chromatography-mass spectrometry(GC-MS) analysis,the structures of unknown components were deduced.In addition,another two groups of unknown masses in the mass spectra with a difference of 62:234.8,296.8,358.9 and 410.7,472.7,534.7,combined with two-stage mass spectrometry,could be concluded to derive from the polymerization of nickel acetate with formic acid and benzoic acid,and some dimer and trimer ions were produced simultaneously.The attribution of all ions in the mass spectra of this product was certified,and most of the components in this product were analyzed.A new train of thought and method for the analysis of unknowns in chemical products was provided in this paper,and it could be used for the qualitative identification of unknowns in complex systems,and the ionization law about the metal ion of nickel combined with organic acid ionized in mass spectrometry was also founded.
A fourier transform ion cyclotron resonance mass spectrometry(FT-ICR-MS) was developed for the qualitative analysis of unknown components in an imported aluminum sealer as surface treatment agent,which was processed from a variety of ingredients.Naphthalene sulfonate,nickel acetate,sodium benzoate and other components were discovered in this kind of product.Through the precise molecular ion data derived from FT-ICR-MS analysis and the isotope fine structure,the unknown material ion formula was inferred.Then,combined with inductively coupled plasma mass spectrometry(ICP-MS) and gas chromatography-mass spectrometry(GC-MS) analysis,the structures of unknown components were deduced.In addition,another two groups of unknown masses in the mass spectra with a difference of 62:234.8,296.8,358.9 and 410.7,472.7,534.7,combined with two-stage mass spectrometry,could be concluded to derive from the polymerization of nickel acetate with formic acid and benzoic acid,and some dimer and trimer ions were produced simultaneously.The attribution of all ions in the mass spectra of this product was certified,and most of the components in this product were analyzed.A new train of thought and method for the analysis of unknowns in chemical products was provided in this paper,and it could be used for the qualitative identification of unknowns in complex systems,and the ionization law about the metal ion of nickel combined with organic acid ionized in mass spectrometry was also founded.
引文
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[3] Tian L P,Zuo Y,Zhao J M,Xiong J P,Zhang X F,Zhao X H.J.Chin.Soc.Corros.Prot.(田连朋,左禹,赵景茂,熊金平,张晓丰,赵旭辉.中国腐蚀与防护学报),2005,25(6):327-331.
[4] Tian L P,Zuo Y,Zhao J M,Xiong J P,Zhao X H.Corros.Prot.(田连朋,左禹,赵景茂,熊金平,赵旭辉.腐蚀与防护),2006,27(2):58-62.
[5] Bian L P,Zhang H J.J.Chin.Mass Spectr.Soc.(卞利萍,张洪杰.质谱学报),2005,26(4):247-253.
[6] Chen J,Yin J,Gao S,Xu L,Xiao H L.Chin.J.Anal.Chem.(陈君,殷俊,高帅,许莉,肖宏良.分析化学),2012,40(3):421-426.
[7] Zhao X G,He K.Mod.Sci.Instrum.(赵晓光,何昆.现代科学仪器),2008,(2):43-48,58.
[8] Liang J,Xia Y G,Guo X D,Wang T L,Kuang H X.Chin.Tradit.Herb.Drugs(梁军,夏永刚,郭信东,王天龙,匡海学.中草药),2017,48(20):4323-4327.
[9] Zhou L L,Liu Z Q,Yan C Y,Song F R,Liu S Y,Zhu J H.J.Chin.Mass Spectr.Soc.(周莉莉,刘志强,闫存玉,宋凤瑞,刘淑莹,祝建华.质谱学报),2008,29(6):332-336.
[10] Shi Q,Zhao S Q,Xu C M,Hou D J.J.Chin.Mass Spectr.Soc.(史权,赵锁奇,徐春明,侯读杰.质谱学报),2008,29(6):367-378.
[11] Hu Q L,Liu Y R,Liu Z L,Tian S B,Xu Z H.Chin.J.Anal.Chem.(胡秋玲,刘颖荣,刘泽龙,田松柏,徐振洪.分析化学),2010,38(4):564-568.
[12] Zeng C P,Wu F W,Dong J,Yuan P H.J.Instrum.Anal.(曾纯品,武法伟,董军,袁鹏辉.分析测试学报),2017,36(5):679-683.