Production of High-Power Microwave-Induced Helium Plasma at Atmospheric Pressure for Trace Element Analysis

在大气压下产生高功率微波诱导氦等离子体用于痕量元素分析

• 批准号: 11680491
• 负责人: OKAMOTO Yukio
• 金额: $ 2.24万
• 依托单位: Toyo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680491/
• 关键词: Trace element analysis; Microwave-induced helium plasma; Okamoto cavity; Atomic emission spectrometry; Mass spectrometry; Surface-wave mode plasma; Inductively-coupled plasma; マイクロ波誘導プラズマ; 表面波プラズマ; 表面波モード; 高周波誘導結合プラズマ(ICP); マイクロ波誘導プラズマ(MIP)

A high-power (〜1 kW, 2.45 GHz) annular-shaped microwave-induced helium plasma at atmospheric pressure was developed for determination of nonmetals in the aqueous solutions. The plasma was generated by an Okamoto cavity (Y. Okamoto, Anal. Sci. 7 (1991) 283) which was modified to focus the energy and low gas flow rate )101/min). No external cooling was used to stabilized the plasma. An aqueous solution was injected into the plasma by an ultrasonic system with desolvation and condensation. The electron density and iron excitation temperature were on the order of 10^<14>cm3 and 5000 K, respectively. Introduction of aqueous fluoride in the form of NaF, chloride in the form of NaCl, and bromide in the form of KBr produced intense emission and detection limits of 100 ppb for FI(685.6 nm), 100 ppb for Cl II(479.5 nm), and 200 ppb for Br II(470.5 nm) were obtained.

研制了一台高功率(~1kW，2.45 GHz)常压环形微波诱导氦等离子体，用于测定水溶液中的非金属。血浆是由冈本腔(Y.Okamoto，肛门)产生的。SCI。7(1991)283)，修改为集中能量和低气体流量)101/min)。不使用外部冷却来稳定血浆。水溶液通过超声波系统通过去溶和冷凝注入到血浆中。其电子密度和铁激发温度分别为10K和5000K数量级。在氟化钠、氯化钠和溴化钾形式的氟化物溶液中产生了强烈的发射，FI(685.6 nm)、ClII(479.5 nm)和BrII(470.5 nm)的检测下限分别为100 ppb、100 ppb和200 ppb。

项目成果

Hirofumi Yamada and Yukio Okamoto: "Characteristics of High-Power Microwave-Induced Helium Plasma at Atmospheric Pressure for the Determination of Nonmetals in Aqueous Solution"Applied Spectroscopy. 55,2. (2001)

Hirofumi Yamada 和 Yukio Okamoto：“大气压下高功率微波诱导氦等离子体测定水溶液中非金属的特性”应用光谱学。

Yukio Okamoto, Hiroyuki Murohashi, Saiji Wake: "Detection Aqueous Fluoride with a High-power Microwave-Induced Helium Plasma at Atmospheric Pressure"Proc.of 28^<th> Annual Conf.Of the Federation of Anal.Chem.And Spectro.Societies(2001 FACSS). 250 (2001)

Yukio Okamoto、Hiroyuki Murohashi、Saiji Wake：“在大气压下用高功率微波诱导氦等离子体检测氟化物水溶液”Proc.of 28^<th> Annual Conf.Of the Federation of Anal.Chem.And Spectro.Societies

Hirofumi Yamada, Yukio Okamoto: "Characteristics of High-Power Microwave-Induced Helium Plasma at Atmospheric Pressure for the Determination of Nonmetals in Aqueous Solution"Applied Spectroscopy. 55,2. 114-119 (2001)

Hirofumi Yamada、Yukio Okamoto：“大气压下高功率微波诱导氦等离子体测定水溶液中非金属的特性”应用光谱学。

Yukio Okamoto: "High-Power Microwave-Induced Helium Plasma at Atmospheric Pressure for Determination of Halogens in Aqueous Solution"Jpn. J. Appl. Phys.. 38, 2. 388-L341 (1999)

Yukio Okamoto：“大气压下高功率微波诱导氦等离子体测定水溶液中的卤素”Jpn。

Seiji Wake, Hiroyuki Murohashi and Yukio Okamoto: "Microwave-Induced Helium Plasma at Atmospheric Pressure for Detection of Halogens in Aqueous Solution"Proc. XXV ICPIG(lnter. Conf. on Phenomena in Ionized Gases). 4. 319-320 (2001)

Seiji Wake、Hiroyuki Murohashi 和 Yukio Okamoto：“大气压下微波诱导氦等离子体用于检测水溶液中的卤素”Proc。