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Umemura, Tomonari*; Kojima, Norihisa*; Ueki, Yuji
Bunseki Kagaku, 57(7), p.517 - 529, 2008/07
Times Cited Count：1 Percentile：4.16(Chemistry, Analytical)The growing demand for high-throughput analysis in the current competitive life sciences and industries has promoted the development of high-speed HPLC techniques and tools. As one of such tools, monolithic columns have attracted increasing attention and interest in the last decade due to the low flow-resistance and excellent mass transfer, allowing for rapid separations and reactions at high flow rates with minimal loss of column efficiency. In the present paper, recent progress in the development of organic polymer monoliths is discussed. Especially, the procedure for the preparation of methacrylate-based monoliths with various functional groups is described. Furthermore, the performance of the produced monoliths is demonstrated through the results for (1) rapid separations of alkylbenzenes at high flow rates, (2) flow-through enzymatic digestion of cytochrome c on a trypsin-immobilized monolithic column, and (3) separation of the tryptic digest on a reversed-phase monolithic column.
Umemura, Tomonari*; Wakita, Yoshinori*; Kojima, Norihisa*; Ueki, Yuji; Katakai, Akio; Tamada, Masao; Tsunoda, Kinichi*; Haraguchi, Hiroki*
no journal, ,
no abstracts in English
-ray detection methodOshima, Masumi; Toh, Yosuke; Koizumi, Mitsuo; Kin, Tadahiro; Hara, Kaoru; Kimura, Atsushi; Furutaka, Kazuyoshi; Nakamura, Shoji; Murakami, Yukihiro*; Sushida, Kazuyoshi*; et al.
no journal, ,
A new trace element analysis method is proposed on the basis of multiple -ray detection, which is two or higher fold -ray coincidence method. We apply this method for prompt -ray activation analysis (PGAA) and instrumental neutron activation analysis (INAA). The advantage of the methods consists of high energy resolution and high sensitivity. The principle of the multiple -ray detection method and actual applications to cosmological chemistry, earth chemistry, environmental chemistry, etc, will be presented.
