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Study on semi-automatic analyzer for catalytic analysis

半自动催化分析仪的研究

基本信息

批准号：
62550543
负责人：
FUKASAWA Tsutomu
金额：
$ 1.02万
依托单位：
Yamanashi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
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/grant/KAKENHI-PROJECT-62550543/
关键词：
Catalytic analysis Semi-automation of analysis 長光路細管セル

项目摘要

A new semi-automatic analyzer was developed for catalytic method. The analyzer has a sophisticated cell (about 0.3 ml, 1-cm light path) for absorption measuremrnt,which is used as a chamber for mixing simultaneously reactants. The sample and reactant solutions were injected into three septum-type injectors and a valve-type injector connected in series, respectively, and carried by air pressure through a Teflon flow system to the cell. The analyzer was used to determine sulfur using methylorange bromate catalytic reaction. The analyzer has some outstanding analytical performances, i.e., sensitivity(reaction rate/ ng sulfur) and precision are one-order better than those of the usual manual operation. A tubular cell with 30-cm light path was also developed and equipped in the analyzer with a small mixing chamber for sensitive measurement of absorbance. The tubular cell permited to trace an initial reaction at about one thirtieth lower concentration of colored product compared with use of 1-cm cell in catalytic determination of vanadium using gallic acid-bromate reaction.

开发了一种新型催化法半自动分析仪。该分析仪具有用于吸收测量的精密池（约0.3毫升，1厘米光路），用作同时混合反应物的室。将样品溶液和反应物溶液分别注入三个串联的隔膜型注射器和阀门型注射器中，并在气压的作用下通过聚四氟乙烯流动系统输送到池中。该分析仪利用甲基橙溴酸盐催化反应测定硫。该分析仪具有优异的分析性能，灵敏度（反应速率/纳克硫）和精密度均比通常的手动操作提高一个数量级。还开发了具有 30 厘米光路的管状池，并在分析仪中配备了一个小型混合室，用于灵敏测量吸光度。在利用没食子酸-溴酸盐反应催化测定钒中，与使用 1 厘米电池相比，管状电池允许在有色产物浓度低约三十分之一的情况下追踪初始反应。