α-萘酚型和β-萘酚型偶氮染料在四极杆/静电场轨道阱高分辨质谱的裂解规律分析  

Analysis of Fragmentation Law ofα-naphtholandβ-naphthol Azo Dyes by Quadrupole/Electrostatic Field Orbitrap High Resolution Mass Spectrometry

作　　者：林子豪 曾巧辉 周庆琼 古敏 戚平 LIN Zihao;ZENG Qiaohui;ZHOU Qingqiong;GU Min;QI Ping(Guangzhou Institute for Food Control,Guangdong Guangzhou 511400;Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing,College of Food Science and Engineering,Foshan University,Guangdong Foshan 528225;Guangdong Academy of Sciences Biological and Medical Engineering Institute,China Sugar Inspection Center,Guangdong Guangzhou 510316,China)

机构地区：[1]广州市食品检验所,广东广州511400 [2]佛山科学技术学院食品科学与工程学院,广东省食品智能制造重点实验室,广东佛山528225 [3]广东省科学院生物与医学工程研究所国家糖业质量监督检验中心,广东广州510316

出　　处：《广州化工》2024年第20期75-77,共3页GuangZhou Chemical Industry

基　　金：广东省自然科学基金面上项目(2021A1515010015);广州市市场监督管理局科技项目(2023KJ39);广州市市场监督管理局科技项目(2022KJ43);广东省市场监督管理局科技项目(2024CS04)。

摘　　要：采用四极杆/静电场轨道阱高分辨质谱仪直接采集碎裂片段的精确质荷比(m/z),通过元素模拟得到各主要碎片的元素组成并进行比对,研究了α-萘酚型和β-萘酚型偶氮染料的质谱裂解规律。结果表明:两种染料均存在偶氮式和腙式两种形态。在腙式形态时,断裂位点均发生在氮氮键。在偶氮式形态时,β-萘酚型更容易丢失萘酚上的羟基,而α-萘酚型则在偶氮键和萘酚之间发生断裂。总的来说,β-萘酚型更倾向于腙式的裂解方式,而α-萘酚型更倾向于偶氮式的裂解方式。The accuracy mass-to-charge ratio(m/z)of fragmentation fragments was obtained by quadrupole/electrostatic field orbitrap high resolution mass spectrometry,and the element composition of the main fragmentations were obtained by element simulation,and then the mass fragmentation law of bothα-naphthol andβ-naphtholazo dyes were investigated.The results showed thatboth azo and hydrazone forms were existed in the two dyes.In the hydrazoneform,it was cracked at the nitrogen single bond.In theazo form,β-naphthol dyes loss the hydroxyl of naphthol,whileα-naphthol dyes cracked between the azo bond and the naphthol.All in all,β-naphthol dyespreferred to the cracking of hydrazone forms,whileα-naphthol dyes preferred to the cracking of azo forms.

关 键 词：偶氮染料 α-萘酚型 β-萘酚型 四极杆/静电场轨道阱高分辨质谱 质谱裂解规律 

分 类 号：O652.1[理学—分析化学]