Fundamental studies on the determination of nanogram quantities of some metals in natural waters by atomic spectroscopic analysis.

用原子光谱分析法测定天然水中某些金属纳克量的基础研究。

• 批准号: 61470033
• 负责人: ATSUYA Ikuo
• 金额: $ 3.84万
• 依托单位: Kitami Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61470033/
• 关键词: 原子吸光分析; ICP発光分光分析; ミニチュアカップ; 粉末試料の直接定量; オキシンーマグネシウム共沈; ジメチルグリオキシムーニッケル共沈; 1-(2-ピリジルアゾ)-2-ナフトール; ジチゾン; オキシン-マグネシウム共沈; ジメチルグリオキシム-ニッケル共沈

Although atomic spectrometric method such as graphite furnace atomic absorption spectrometry (GF-AAS) or inductively-coupled plasma stomic emission spectrometry is one of the most sensitive analytical methods, the instrumental sensitivity of these method is less than the level of the element in natural water. Accordingly preconcentration procedures must be applied.On the other hand, we have already developed the direct analysis of. powder samples by AAS using an inner miniature cup (Mini-cup) in conjunction with a cupped type electrothermal graphite furnace. Therefore, it has been considered that the analytical sensitivity may be increased at least 1000-fold when the direct determination by AAS using the mini-cup technique is applied to coprecipitation samples obtained by using a compination of an organic complex agent and a carrier ion which is ashed completely at the ashing step. We have thought that two kinds of chelating agents, i.e., 8-hydroxyquinoline and dimetrylglyoxime, which are typical agents for gravimetric analysis, may be useful.As the result, a new easy, sensitive and accurate atomic absorption spectrometric method using an inner miniature cup in conjunction with a cupped type electrothermal graphite furnace for the solid sampling technique is established for the detarmination of sub-ppb levels of some metals such as Cd, Mn, Pb etc. lake or sea water.

虽然原子光谱法如石墨炉原子吸收光谱法（GF-AAS）或电感耦合等离子体原子发射光谱法（ICP-AES）是最灵敏的分析方法之一，但这些方法的仪器灵敏度低于天然水中元素的水平。相应地，必须采用富集程序。另一方面，我们已经发展了直接分析。粉末样品的AAS使用内微型杯（迷你杯）与杯型石墨炉。因此，认为当使用小杯技术的AAS直接测定应用于通过使用有机络合剂和在灰化步骤中完全灰化的载体离子的复合而获得的共沉淀样品时，分析灵敏度可以增加至少1000倍。我们认为两种螯合剂，即，8-本文介绍了一种用微型内杯和杯式石墨炉固体进样技术测定微量镉、锰、铅等金属元素的原子吸收光谱法。

项目成果

I. Atsuya;K. Itoh;K. Akastuka;K. Jin: Z. Anal. Chem.326. 53-56 (1987)

I.厚也；K.

伊藤好二, 厚谷郁夫: 分析化学. 36. 390-395 (1987)

伊藤浩二，厚也育夫：分析化学 36. 390-395 (1987)

K.Akatsuka;I.Atsuya: Anal.Chem.,.

K.Akatsuka；I.Atsuya：Anal.Chem.，。

K. Itoh, I. Atsuya: "Evaluation of graphite miniature cup for electrothermal atomic absorption spectrometry; I. Aplication to liquid samples." Bunseki Kagaku. 35. 530-535 (1986)

K. Itoh、I. Atsuya：“用于电热原子吸收光谱法的石墨微型杯的评估；I. 在液体样品中的应用。”

I. Atsuya: "Direct determination of trace elements in environmental samples by atomic absorption spectrometry using a miniature cup." Bulletin of Atomic Energy Research Laboratory Musashi Institute of Technology. 10. 11-15 (1986)

I. Atsuya：“使用微型杯通过原子吸收光谱法直接测定环境样品中的微量元素。”