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  1. No Access

    Article

    Quantitative Analysis of Red Phosphorus in Polypropylene by Evolved Gas Analysis Mass Spectrometry

    Quantitative analysis of red phosphorus in polypropylene was studied using a temperature programmable pyrolyzer in combination with a mass spectrometer. Evolved gas analysis (EGA) profiles were obtained by con...

    Takahisa Ishimura, Atsushi Watanabe, Chuichi Watanabe, Norio Teramae in Analytical Sciences (2020)

  2. Article

    Open Access

    Selective phenol recovery via simultaneous hydrogenation/dealkylation of isopropyl- and isopropenyl-phenols employing an H2 generator combined with tandem micro-reactor GC/MS

    The pyrolysis of bisphenol A (BPA), an essential process ingredient used in industry and many everyday life products, helps produce low-industrial-demand chemicals such as isopropenyl- and isopropyl-phenols (I...

    Shogo Kumagai, Masaki Asakawa, Tomohito Kameda, Yuko Saito… in Scientific Reports (2018)

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  3. Article

    Open Access

    Reliable radiosynthesis of 4-[10B]borono-2-[18F]fluoro-l-phenylalanine with quality assurance for boron neutron capture therapy-oriented diagnosis

    The aim of this study was to establish a reliable and routine method for the preparation of 4-[10B]borono-2-[18F]fluoro-l-phenylalanine (l-[18F]FBPA) for boron neutron capture therapy-oriented diagnosis using pos...

    Kiichi Ishiwata, Ryoichi Ebinuma, Chuichi Watanabe… in Annals of Nuclear Medicine (2018)

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  4. No Access

    Article

    On-line Analysis of Catalytic Reaction Products Using a High-Pressure Tandem Micro-reactor GC/MS

    When a GC/MS system is coupled with a pressurized reactor, the separation efficiency and the retention time are directly affected by the reactor pressure. To keep the GC column flow rate constant irrespective ...

    Atsushi Watanabe, Young-Min Kim, Akihiko Hosaka, Chuichi Watanabe… in Analytical Sciences (2017)

  5. No Access

    Article

    Non-Isothermal Pyrolysis of Citrus Unshiu Peel

    In this study, the non-isothermal pyrolysis of citrus unshui (C. unshiu) peel was studied by thermogravimetric analysis (TGA) and evolved gas analysis/pyrolyzer-gas chromatography/mass spectrometry (EGA/Py-GC/MS)...

    Young-Min Kim, Hyung Won Lee, Seungdo Kim, Chuichi Watanabe… in BioEnergy Research (2015)

  6. No Access

    Article

    Development of a Simple Vent-free Interface for Capillary Gas Chromatography-Mass Spectrometry

    A novel and simple interface for capillary gas chromatography-mass spectrometry (GC-MS) was developed using a piece of deactivated stainless-steel tubing. This interface eliminated the need to vent the MS ion ...

    Chuichi Watanabe, Shihori Takeda, Robert R. Freeman, Hajime Ohtani in Analytical Sciences (2011)

  7. No Access

    Article

    Rapid and Simple Determination of Phthalates in Plastic Toys by a Thermal Desorption-GC/MS Method

    A thermal desorption (TD)-GC/MS method was applied for the determination of phthalates in plastic children’s toys. The method, which does not need any cumbersome sample pretreatment such as solvent extraction,...

    Tetsuro Yuzawa, Chuichi Watanabe, Robert R. Freeman, Shin Tsuge in Analytical Sciences (2009)

  8. No Access

    Article

    Evaluation of the Thermal Desorption–GC/MS Method for the Determination of Decabromodiphenyl Ether (DeBDE) in Order of a Few Hundred ppm Contained in a Certified Standard Polystyrene Sample

    Thermal desorption (TD)–GC/MS, recently developed for the determination of DeBDE in a polystyrene (PS) sample to an order of a few %, was evaluated in detail by using a certified standard PS sample containing ...

    Tetsuro Yuzawa, Akihiko Hosaka, Chuichi Watanabe, Shin Tsuge in Analytical Sciences (2008)

  9. No Access

    Article

    Rapid Determination of Decabromodiphenyl Ether in Polystyrene by Thermal Desorption-GC/MS

    A rapid determination of decabromodiphenyl ether (DeBDE) in polystyrene (PS) by thermal desorption (TD)-GC/MS was studied. The TD-GC/MS method using a pyrolysis-GC/MS system allowed the quick quantification of...

    Akihiko Hosaka, Chuichi Watanabe, Shin Tsuge in Analytical Sciences (2005)

  10. No Access

    Article

    Determination of Residual Solvents in Pharmaceuticals by Thermal Desorption-GC/MS

    A novel method for the determination of residual solvents in pharmaceuticals by thermal desorption (TD)-GC/MS has been established. A programmed temperature pyrolyzer (double shot pyrolyzer) is applied for the...

    Keiji Hashimoto, Koji Urakami, Yasuhiro Fujiwara, Syunji Terada… in Analytical Sciences (2001)