Masakazu TAKEI

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Toshiro Takahashi

Niigata University

Kouzou OHSAWA

T. Miyakawa

Chiba Institute of Technology

Bogdan Stefanov Vaglarov

Japan Agency for Marine-Earth Science and Technology

N. Takeda

Bunkyo University

N. Takegawa

Tokyo Metropolitan University

Hiroaki Suzuki

Tokyo City University

Jun‐Ichi Kimura

Japan Agency for Marine-Earth Science and Technology

Naomi Hirayama

Japan Institute of Leather Research

Takeshi Hanyu

Japan Agency for Marine-Earth Science and Technology

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Japan Agency for Marine-Earth Science and Technology

Society of Exploration Geophysicists

The University of Tokyo

Japan Atomic Energy Agency

Tohoku University

International Foundation for Research in Experimental Economics

Naval Hospital Yokosuka Japan

Niigata University

Chiba Institute of Technology

Earthquake Engineering Research Institute

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Development of a fully automated open-column chemical-separation system—COLUMNSPIDER—and its application to Sr-Nd-Pb isotope analyses of igneous rock samples

Journal of Mineralogical and Petrological Sciences (2012)

Takashi Miyazaki Bogdan Stefanov Vaglarov Masakazu TAKEI Masahiro Suzuki Hiroaki Suzuki

A fully automated open-column resin-bed chemical-separation system, named COLUMNSPIDER, has been developed. The system consists of a programmable micropipetting robot that dispenses chemical reagents and sample solutions into an open-column resin bed for elemental separation. After the initial set up of resin columns, chemical reagents, and beakers for the separated chemical components, all separation procedures are automated. As many as ten samples can be eluted in parallel in a single automated run. Many separation procedures, such as radiogenic isotope ratio analyses for Sr and Nd, involve the use of multiple column separations with different resin columns, chemical reagents, and beakers of various volumes. COLUMNSPIDER completes these separations using multiple runs. Programmable functions, including the positioning of the micropipetter, reagent volume, and elution time, enable flexible operation. Optimized movements for solution take-up and high-efficiency column flushing allow the system to perform as precisely as when carried out manually by a skilled operator. Procedural blanks, examined for COLUMNSPIDER separations of Sr, Nd, and Pb, are low and negligible. The measured Sr, Nd, and Pb isotope ratios for JB-2 and Nd isotope ratios for JB-3 and BCR-2 rock standards all fall within the ranges reported previously in high-accuracy analyses. COLUMNSPIDER is a versatile tool for the efficient elemental separation of igneous rock samples, a process that is both labor intensive and time consuming.

10.2465/jmps.110520

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硫酸塩エアロゾルの定量についての粒子捕捉レーザ脱離質量分析計(PT‐LDMS)の評価

Aerosol Science and Technology (2016)

Yoshihiro Ozawa N. Takeda T. Miyakawa Masakazu TAKEI Naomi Hirayama

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