The development of automated analytical method for vanadium (IV), (V) in natural waters by using chelating resins.

利用螯合树脂开发天然水中钒(IV)、(V)的自动分析方法。

• 批准号: 06640782
• 负责人: NAKAYAMA Eiichiro
• 金额: $ 1.34万
• 依托单位: School of Environmental Science, The University of Shiga Prefecture (1995)Kyoto University (1994)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06640782/
• 关键词: natural waters; vanadium (IV); vanadium (V); acethylacetone resin; 8-quinolinol resin; automated analytical method; catalytic analytical method; バナジウム; キレート樹脂; 酸化還元状態; 淡水; 海水; 自動分析

An automated flow-through analytical method for determining vanadium (IV) and (V) in natural waters has been developed to investigate the biogeochemical behaviors of vanadium in hydrosphere. A variety of chelating resins were synthesized and tested to separate vanadium (IV) and (V) mutually. It was found that vanadium (V) was thoroughly separated from vanadium (IV) at a pH range between 2.2 and 3.8 by a resin of acethylacetone (AA) immobilixed on silica gel containing fluoride (MAF-AA). Both the vanadium (IV) and (V) in natural waters can be easily detected by a highly sensitive and selective catalytic analytical method using BGL-bromate system. Iron (III), which is the only interfering metal ion in this detection method, was also found to be removed using a combination of resins, MAF-AA and a resin of 8-quinolinol immobilized on the above mentioned silica gel (MAF-8HQ). On the basis of these results, an automatic analyzer composed of concentration system and detection system was assem … More bled. The concentration ssystem was composed of two columns plunged with the two kinds of resin, peristaltic pumps which sent sample solution, buffer solution, cleaning solution and eluent, three-way solenoid valves which changed over the flow solutions and a programmable controller. The detection system was the Autoanalyzer II(Bran Luebbe co.Ltd.) With this equipment, a liner calibration curve was obtained in the vanadium concentration range between 0.05 and 15.0 nM when using 10 ml of sample solution. As a result of redox study of vanadium in pure water, lake water and seawater by using the equipment, it was found that the existing reports showing the existence od vanadium (IV) in natural waters were erroneous because the samples were preserved under the acidic condition under which vanadium (v) in natural waters containing organic matter was easily reduced to vanadium (IV). Moreover, vanadium (IV) was merely found to be in acidic precipitation and reductive bottom waters containing hydrogen sulfide in lake. Less

在自然水域中确定钒和（v）的自动流通分析方法已养成研究，以研究水圈中的钒的生物地看式行为。 2.2通过使用BGL-bromate TEM，可以轻松地检测到含氟化物（MAF-AA）的硅胶（MAF-AA）和（V）的2.2。在这种检测方法中，这是一种干扰金属离子，也发现使用树脂，MAF-AA和8 Quinolinolinol imobilin的树脂在ABOVES上（MAF-8HQ），这是一个自动分析仪，该树脂被清除。集中系统和检测系统的组装...集中系统由两种树脂，蠕动泵组成控制器。检测系统是自动分析仪II（Bran Luebbe Co.使用10 mL样品溶液时，内部范围为0.05至15.0 nm。被发现现有的天然水域中的轴向氧化钒v）是错误的，因为样品是在酸性条件下保存下来的在湖中硫化物。