Conventional and new traceability schemes of organic standards for safe water supply in Japan
Numata, Masahiko, Kitamaki, Yuko, Shimizu, Yoshitaka, Yamazaki, Taichi, Saito, Naoki, Kuroe, Miho, Hanari, Nobuyasu, Ishikawa, Keiichiro, Saito, Takeshi, Ihara, Toshihide
Published in Metrologia (01.06.2019)
Published in Metrologia (01.06.2019)
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Journal Article
Mass balance method for purity assay of phthalic acid esters: development of primary reference materials as traceability sources in the Japan Calibration Service System
Ishikawa, Keiichiro, Hanari, Nobuyasu, Shimizu, Yoshitaka, Ihara, Toshihide, Nomura, Akira, Numata, Masahiko, Yarita, Takashi, Kato, Kenji, Chiba, Koichi
Published in Accreditation and quality assurance (01.06.2011)
Published in Accreditation and quality assurance (01.06.2011)
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Journal Article
Certified calibration solution reference material for the determination of perfluorooctane sulfonate from the National Metrology Institute of Japan (NMIJ)
Hanari, Nobuyasu, Itoh, Nobuyasu, Ishikawa, Keiichiro, Iwasawa, Ryoko, Aoyagi, Yoshie, Yarita, Takashi, Numata, Masahiko
Published in International journal of environmental analytical chemistry (01.05.2013)
Published in International journal of environmental analytical chemistry (01.05.2013)
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Journal Article
Sediment certified reference materials for the determination of polychlorinated biphenyls and organochlorine pesticides from the National Metrology Institute of Japan (NMIJ)
Numata, Masahiko, Yarita, Takashi, Aoyagi, Yoshie, Tsuda, Yoko, Yamazaki, Misako, Takatsu, Akiko, Ishikawa, Keiichiro, Chiba, Koichi, Okamaoto, Kensaku
Published in Analytical and bioanalytical chemistry (01.04.2007)
Published in Analytical and bioanalytical chemistry (01.04.2007)
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Journal Article
Certification of water content in NMIJ CRM 4222-a, water standard solution 0.1 mg g −1 , by coulometric and volumetric Karl Fischer titration
Inagaki, Shinsuke, Asakai, Toshiaki, Numata, Masahiko, Hanari, Nobuyasu, Ishikawa, Keiichiro, Kitanaka, Kouji, Hagiwara, Masaharu, Kotaki, Shuichi
Published in Analytical methods (2014)
Published in Analytical methods (2014)
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Journal Article
Development of certified reference materials of high-purity volatile organic compounds: purity assay by the freezing-point depression method
Shimizu, Yoshitaka, Ohte, Yoko, Bao, Xinnu, Otsuka, Satoko, Kitamaki, Yuko, Ishikawa, Keiichiro, Ihara, Toshihide, Kato, Kenji
Published in Accreditation and quality assurance (01.07.2008)
Published in Accreditation and quality assurance (01.07.2008)
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Journal Article
Conference Proceeding
Water content variation of p-n-heptylphenol reference material
Hanari, Nobuyasu, Iwasawa, Ryoko, Otsuka, Satoko, Fujiki, Naomi, Matsumoto, Ayako, Ihara, Toshihide, Ishikawa, Keiichiro, Yarita, Takashi
Published in Accreditation and quality assurance (01.12.2010)
Published in Accreditation and quality assurance (01.12.2010)
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Journal Article
Variation in concentration of perfluorooctanoic acid in methanol solutions during storage
Hanari, Nobuyasu, Itoh, Nobuyasu, Ishikawa, Keiichiro, Yarita, Takashi, Numata, Masahiko
Published in Chemosphere (Oxford) (01.01.2014)
Published in Chemosphere (Oxford) (01.01.2014)
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Journal Article
Mass Spectrometric Gene Diagnosis of One-base Substitution from Polymerase Chain Reaction Amplified Human DNA
Tsuneyoshi, Toshihiro, Ishikawa, Keiichiro, Koga, Yoshinori, Naito, Yasuhiro, Baba, Shozo, Terunuma, Hideya, Arakawa, Ryuichi, Prockop, Darwin J.
Published in Rapid communications in mass spectrometry (22.04.1997)
Published in Rapid communications in mass spectrometry (22.04.1997)
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Journal Article
Certification of reference materials for the determination of alkylphenols
Hanari, Nobuyasu, Ishikawa, Keiichiro, Shimizu, Yoshitaka, Otsuka, Satoko, Iwasawa, Ryoko, Fujiki, Naomi, Numata, Masahiko, Yarita, Takashi, Kato, Kenji
Published in Analytical and bioanalytical chemistry (01.04.2015)
Published in Analytical and bioanalytical chemistry (01.04.2015)
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