单电极介质阻挡放电离子源的消电子技术研究

引用本文: 胡舜迪, 刘其强, 赵鹏, 洪欢欢, 史振志, 周镇宇, 闻路红. 单电极介质阻挡放电离子源的消电子技术研究[J]. 分析化学, 2018, 46(7): 1017-1024. doi: 10.11895/j.issn.0253-3820.181158 shu

Citation: HU Shun-Di, LIU Qi-Qiang, ZHAO Peng, HONG Huan-Huan, SHI Zhen-Zhi, ZHOU Zhen-Yu, WEN Lu-Hong. Electron Elimination Method Based on Single Electrode Dielectric Barrier Discharge Ion Source[J]. Chinese Journal of Analytical Chemistry, 2018, 46(7): 1017-1024. doi: 10.11895/j.issn.0253-3820.181158 shu

单电极介质阻挡放电离子源的消电子技术研究

胡舜迪 ^1, ,
刘其强 ^1, ,
赵鹏 ^1, ,
洪欢欢 ^1, ,
史振志 ^1, ,
周镇宇 ^2, ,
闻路红 ^1,

1.
宁波大学高等技术研究院, 宁波 315211;
2.
宁波华仪宁创智能科技有限公司, 宁波 315100
基金项目:
本文系国家重大科学仪器设备开发专项（No.2016YFF0100300）、国家重大科研仪器研制项目（No.21727813）、国家自然科学基金项目（Nos.21727813，11602116，51605231）、宁波市自然科学基金项目（No.2017A610164）和宁波大学王宽诚幸福基金资助

摘要: 基于电场绝缘屏蔽技术的单电极介质阻挡放电离子源（DBDI），具有放电均匀、稳定、离子化能量高等优点，可实现对更大极性范围样品的快速检测。较高的离子化能量也增大了质谱图的背景噪声水平，对部分弱极性、低沸点样品的检测信噪比不高。本研究发展了基于单电极DBDI体系的外置电极消电子技术，探讨了外置针电极和外置金属网的消电子机理及其检测效果。结果表明，外置金属网消电子技术显著提高了部分弱极性样品的检测信噪比，异丙威、全氟辛酸、苏丹红Ⅲ的信噪比提升了5~6倍。基于该技术测定辣椒粉中苏丹红Ⅲ，回收率为83.7%~94.6%，相对标准偏差（RSD）为5.6%~9.0%，检出限为23 mg/kg，满足辣椒粉中苏丹红Ⅲ添加剂检测分析的要求。外置金属网消电子技术进一步提高了单电极DBDI对弱极性、低沸点、复杂样品的检测能力。

关键词:

English

Electron Elimination Method Based on Single Electrode Dielectric Barrier Discharge Ion Source

1.
The Research Institute of Advanced Technologies, Ningbo University, Ningbo 315211, China;
2.
China Innovation Instrument Co. Ltd., Ningbo 315000, China
Received Date: 14 March 2018
Revised Date: 17 May 2018
Fund Project:
This work was supported by the National Key Scientific Instrument and Equipment Development Project (No. 2016YFF0100300), the National Natural Science Foundation of China (Nos. 21727813, 11602116, 51605231), the Natural Science Foundation of Ningbo City (No. 2017A610164) and the K.C.Wong Magna Fund in Ningbo University, China.

Abstract: Based on the electric field shielding and insulation technology, the single electrode dielectric barrier discharge ion source (DBDI) has the characteristics of uniform discharging, stability, and high ionization energy, and thus can be used to detect various samples with a large range of polarity. However, the ionization energy is too high to reduce the background signal noise, and thus affects the detection effectiveness to low polarity and low boiling point samples. To enhance the detection effectiveness to these samples, a method of eliminating electrons of single electrode DBDI by using external metal electrodes was developed in this study. Then, the single electrode DBDI was improved by an external needle electrode and an external metal net, respectively. The mechanism of those external metal electrodes was discussed, and the experimental studies were carried out. The results showed that the external metal net technology had an advantage in improving signal to noise ratio (SNR), and the enhancement of SNR for the detection of isoprocarb, perfluorooctanoic acid and Sudan Ⅲ was about 5-6 times. Based on the technology, a method for determination of Sudan Ⅲ in chili powder was developed. The recoveries, RSD and LOD were 83.7%-94.6%, 5.6%-9.0% and 23 mg/kg, respectively. The external metal electrode technique has broadened the detection range of single electrode DBDI to the field of low polarity, low boiling point and complex samples.

Key words:

Single electrode dielectric barrier discharge ion source
/ Electron elimination
/ External metal net
/ Signal-to-noise ratio
/ Low polarity

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沈阳化工大学材料科学与工程学院沈阳 110142

单电极介质阻挡放电离子源的消电子技术研究

English

Electron Elimination Method Based on Single Electrode Dielectric Barrier Discharge Ion Source

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

单电极介质阻挡放电离子源的消电子技术研究

English

Electron Elimination Method Based on Single Electrode Dielectric Barrier Discharge Ion Source

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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