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Studies on the Improvement of Sensitivity and Precision in Atomic Emission Spectrometry with Inductively Coupled Plasma (ICP) and Microwave Induced Plasma (MIP)

电感耦合等离子体（ICP）和微波诱导等离子体（MIP）提高原子发射光谱分析灵敏度和精度的研究

基本信息

批准号：
01550581
负责人：
NAKAHARA Taketoshi
金额：
$ 1.47万
依托单位：
University of Osaka Prefecture
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

Analytical plasmas such as inductively coupled plasma (ICP) and microwave induced plasma (MIP) have become powerful atomization/excitation sources for atomic emission spectrometry (AES) for the determination of trace metals and nonmetals. In this project, the AES method coupled with ICP and MIP has been investigated to improve the sensitivity and precision of the determination of, in particular, nonmetals. Several worthy results obtained in this study are summarized as follows :1. The analytical potentials of ICP-AES for the determination of nonmetals has been investigated using atomic emission lines in the vacuum ultraviolet (VUV) spectral region. In this work, the practical utility of the VUV lines (B 182.64 nm, S 180.73, 182.04, 182.62 nm) as well as the air normal ultraviolet line (B 208.96 nm) was examined using a conventional solution nebulization. A sensitive method with ICP-AES in the VUV spectral region has been successfully applied to the determination of boron and sulfur in … More several steel reference standard materials (RSM'S).2. In this study, a new instrumentation has been made for the atmospheric pressure helium MIP-AES employing not only a Beenakker-type resonant cavity but also a newly-constructed "surfatron" cavity. Next, in addition, the experimental system has been modified in order to measure emission lines lying in the VUV region of the spectrum by a simple nitrogen-purged optical system.3. In the atmospheric pressure helium MIP-AES, firstly the indirect determination of iodine has been examined and developed utilizing continuous-flow cold-vapor generation of mercury. As an alternative, the gas-phase sample introduction technique has been investigated for the direct determination of iodine by using the 183.04- and 206.16-nm lines, and the best attainable detection limit for iodine was 0.74 ng/ml. The latter method has been applied to the determination of total iodine in brines and sea waters with success.4. In addition to iodine, the developed continuous-flow gas-phase sample introduction for MIP-AES has been extended for the determination of bromine and sulfur with introduction of elemental bromine from bromide, and hydrogen sulfide and sulfur dioxide from sulfide and sulfite ions, respectively. The results for the determination of bromine in several sea waters by the proposed method are in good agreement with those obtained by ion chromatography and inductively coupled plasma-mass spectrometry. Less

电感耦合等离子体（ICP）和微波诱导等离子体（MIP）等分析等离子体已成为原子发射光谱法（AES）测定痕量金属和非金属的强有力的原子化/激发源。在本项目中，AES法与ICP和MIP耦合进行了研究，以提高测定的灵敏度和精密度，特别是非金属。本研究取得了以下几个有价值的结果：1.利用真空紫外（VUV）区的原子发射谱线，研究了ICP-AES测定非金属元素的分析潜力。在这项工作中，真空紫外线（B 182.64 nm，S 180.73，182.04，182.62 nm）以及空气正常紫外线（B 208.96 nm）的实际用途进行了检查，使用传统的溶液雾化。本文提出了真空紫外电感耦合等离子体原子发射光谱法（ICP-AES）测定硼和硫的方法 ...更多信息几种钢铁参考标准材料（RSM'S）。本文提出了一种新的大气压氦分子等离子体原子发射光谱仪，它不仅采用了Beenakker型谐振腔，而且还采用了一种新型的“表面活性剂”腔。其次，对实验系统进行了改进，通过一个简单的氮气吹扫光学系统测量了真空紫外光谱区的发射谱线。在常压氦MIP-AES中，首次研究和发展了用汞的连续冷蒸气发生间接测定碘的方法。作为一种替代方法，研究了气相进样技术，利用183.04和206.16 nm谱线直接测定碘，碘的最佳检测限为0.74 ng/ml。该法已成功地应用于卤水和海水沃茨中总碘的测定.除了碘，开发的连续流动气相样品引入MIP-AES已扩展到溴和硫的测定与引入元素溴从溴化物，硫化氢和二氧化硫从硫化物和亚硫酸根离子，分别。方法用于几种海水沃茨中溴的测定，结果与离子色谱法和电感耦合等离子体质谱法一致。少