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Development of compact emission detection devices for the measurement of environmental pollutants using helium radio-frequency plasma

Development of compact emission detection devices for the measurement of environmental pollutants using helium radio-frequency plasma
开发利用氦射频等离子体测量环境污染物的紧凑型排放检测装置
批准号:
17510014
负责人:
NAKAGAMA Tatsuro
金额:
$2.47万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2005
资助国家:
日本
项目状态:
已结题
起止时间:
2005 至 2007

项目摘要

项目成果

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中文摘要
翻译
本研究的目的是开发能够对环境污染物进行高灵敏度和高选择性检测的紧凑型原子发射探测(AED)装置,因为我们注意到利用无线电波(200-300kHz)易于产生小型化和稳定的氦等离子体。首次研制了一种对某些有机硫化合物具有高灵敏度的AED装置。光度测量系统采用雪崩光电二极管(APD)模块。选择合适的干扰滤光片后,用APD模块检测了硫中921 ~ 923nm的典型原子发射。通过优化电极内径、电极间距、应用功率和频率、等离子体气体流量等因素,实现了GC检测器对硫的灵敏度达到pg/s。然后,研制了一种更小、更节能的同轴双管微型等离子体炬AED装置。使用AED装置,功率低于1W,等离子体气体浓度为几mL/min,即可产生等离子体。将AED装置安装在气相色谱系统上,优化应用功率、频率和等离子体气流量后,CCD光谱仪对有机磷和硫化合物的检测灵敏度更高。在此基础上,研制了另一种同轴微型等离子体炬的AED装置。硫的检出限为8pg/sec,磷的检出限为12pg/sec。
英文摘要
The purpose of this study was that the development of compact atomic emission detection (AED) devices capable of performing high-sensitive and high-selective detections for environmental pollutants because we paid attention to the easy generation of miniaturized and stable helium plasma by applying radio-wave (200-300kHz).An AED device with high-sensitivity for some organic sulfur compounds was firstly developed. An avalanche photodiode (APD) module was used for the photometric system. Some typical atomic emissions (921-923nm)from sulfur were detected by the APD module after selecting by a suitable interference filter. The pg/sec sensitivity for sulfur was achieved as a GC detector by optimizing the inner diameter of electrodes and the distance between them, the applied power and frequency, and the flow rate of plasma gas etc.Next, a smaller and power-saving AED device equipped with a coaxial double-tube type micro plasma torch was newly developed. The plasma was capable of being generated by using the AED device with below 1W of applied power and a few mL/min of plasma gas. When the AED device was equipped on a GC system, more highly sensitive detection of organic phosphorus and sulfur compounds was performed with a CCD spectrometer after the optimization of applied power and frequency, and the flow rate of plasma gas.Furthermore, another AED device with a coaxial type micro plasma torch with face-to-face positioned electrode tubes was developed. 8pg/sec for sulfur and 12pg/sec for phosphorus as the detection limit were achieved, respectively.
期刊论文(0)
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会议论文
DOI: --
发表时间: 2007
期刊: Analytical Sciences 23
影响因子: --
作者: [T.NISUIYAMA, T.NAKAGAMA, K.UCHIYAMA, et. al.]
通讯作者: et. al.
マイクロプラズマトーチを有するGC用原子発光検出デバイスの試作と検出特性(3)有機リン化合物
微等离子体炬GC原子发光检测装置的样机制作及检测特性(3)有机磷化合物
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [斎藤、中釜、内山, ら]
通讯作者: ら
Development of Atomic Emission Detector for Gas Chromatography Equipped with Coaxial Micro Plasma Torch and Detection of Sulfur and Phosphorus Organic Compounds
同轴微型等离子体炬气相色谱原子发射检测器的研制及硫、磷有机化合物的检测
DOI: --
发表时间: 2007
期刊: Bunseki Kagaku 56
影响因子: --
作者: [N. Saito, et. al.]
通讯作者: et. al.
Determination of chlorobenzenes using deuteriumlabeled internal standards with radiofrequency helium plasma atomic emission detector on GC
使用射频氦等离子体原子发射检测器在 GC 上使用氘标记内标测定氯苯
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者: [T.NAKAGAMA, K.UCHIYAMA, et. al.]
通讯作者: et. al.
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