電気学会論文誌E(センサ・マイクロマシン部門誌)
Online ISSN : 1347-5525
Print ISSN : 1341-8939
ISSN-L : 1341-8939
集積化マイクロ吸光度セルによる小形高感度フロー式分析装置
三宅 亮都築 浩一高木 武夫今井 一成
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1997 年 117 巻 3 号 p. 147-154

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A new type of chemical analysis system with a micro-machined absorptiometric flowcell was fabricated in order to evaluate the advantages of micro total analysis systems (μ-TAS). Two micro-mixers and an absorptiometric flowcell were integrated into the one-chip device with dimensions of 24mm×10mm×2mm. This device provided high sensitivity and allowed the miniaturization of other elements such as pump, battery, and reagent's bottle. Consequently, the whole size of the analysis system with the micro-device was 203mm×86mm×76mm, which was about 1/200 of the size of commercial systems (Hitachi FIA system) at volume ratio. Total consumption of reagents for one test was around 2μL, which was about 1/250 smaller than that of the commercial one. The correlation result by using a phosphate standard solution showed good linearity and high sensitivity (0.69Abs/ppm) which was ten times larger than that of the commercial one. These results clarified that μ-TAS had the capability to be superior chemical sensing systems.
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