Study on the Methods for the Determination of Ultra-trace Elements by Inductively Coupled Plasma Atomic Emission Spectrometry Using On-line Preseparation and Enrichment Techniques.

在线预分离富集电感耦合等离子体原子发射光谱法测定超痕量元素方法的研究。

• 批准号: 62470034
• 负责人: KUMAMARU Takahiro
• 金额: $ 2.75万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62470034/
• 关键词: Inductively coupled plasma emission spectrometry; ICP; Solvent extraction; Hydride generation; Ion-exchange chromatography; Electrothermal vaporization; オンライン分離濃縮; イオン交換法オンライン分離濃縮; 銅; 鉛; ベリリウム; 誘導結合高周波プラズマ発光分析; ICP発光分析; 黒鉛炉気化法; ゲルマニウム・カドミウム

Substantial progress has been achieved in inductively coupled plasma (ICP) atomic emission spectrometry (AES) placing it among the principle spectroscopy tools in analytical research and applications laboratoris. However, some limitations exist especially for the analysis of ultratrace concentration levels in minute samples. Various approaches are described to extend the use and reduce the limitations of ICP-AES combined with on-line fashion of pretreatment procedures as follows: (1) Suction-flow (SF) or flow-injection (FI)/liquid-liquid extraction for determination of cadmium with its DDTC chelate utilizing a microporous membrane-film phase separator, determination of copper with its macrocyclic dioxotetramine chelate using a T-piece phase separator, and deter-mination of beryllium with its acetylacetonato chelate with a microporous membrane-tube sparator. (2) SF/ion-exchange enrichment for determination of cadmium, copper, and lead by means of a mini-column of iminodiacetate chelating resin. (3) FI/hydride generation (HG) for determination of germanium using a microporous membrane-tube gas-liquid separator. (4) Ion-exchange chromato-graphic separation/HG for speciation and determination of selenium(IV) and selenium(VI). (5) Versatile sample introduction system with graphite tube furnace for ICP-AES.

电感耦合等离子体原子发射光谱分析已经取得了实质性的进展，使其成为分析研究和应用实验室的主要光谱工具之一。然而，存在一些限制，特别是在分析微量样品中的超痕量浓度水平时。为扩大电感耦合等离子体原子发射光谱仪的使用范围并减少其局限性，提出了以下几种方法：(1)用微孔膜-膜相分离器对镉的DDTC络合物进行吸流(SF)或流动注射(FI)/液-液萃取测定，用T型膜相分离器测定铜的大环二氧四胺络合物，用微孔膜管稀释器测定铍及其乙酰丙酮络合物。(2)SF/离子交换富集法测定镉、铜、铅。(3)用微孔膜管式气液分离器FI/HG测定锗。(4)离子交换色层分离/氢化物发生法测定硒(IV)和硒(VI)的形态和含量。(5)用于电感耦合等离子体发射光谱分析的多功能石墨管炉进样系统。

项目成果

F.Nakata: J.Anal.At.Spectrom.3. 579-582 (1988)

F.Nakata：J.Anal.At.Spectrom.3。

E.Iwamoto: J.Anal.At.Spectrom.4. (1989)

E.Iwamoto：J.Anal.At.Spectrom.4。

T.Kumamaru: Bull.Chem.Soc.Jpn.60. 1930-1932 (1987)

T.Kumamaru：Bull.Chem.Soc.Jpn.60。

M.,Yamamoto: J.Anal.At.Spectrom.3. 441-445 (1988)

M.，山本：J.Anal.At.Spectrom.3。

H.Sakai: Anal.Chim.Acta. (1989)

H.Sakai：Anal.Chim.Acta。