A reliable quantification of organophosphorus pesticides in brown rice samples for proficiency testing using Japanese official analytical method, QuEChERS, and modified QuEChERS combined with isotope dilution mass spectrometry
Otake, Takamitsu, Nakamura, Keisuke, Hirabayashi, Naoyuki, Watanabe, Takaho
Published in Journal of Pesticide Science (20.08.2024)
Published in Journal of Pesticide Science (20.08.2024)
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Journal Article
Proficiency testing by the National Metrology Institute of Japan for quantification of pesticide residues in grain samples from 2012 to 2018
Otake, Takamitsu, Yarita, Takashi, Aoyagi, Yoshie, Hanari, Nobuyasu, Takatsu, Akiko
Published in Journal of Pesticide Science (20.08.2019)
Published in Journal of Pesticide Science (20.08.2019)
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Journal Article
Evaluation of the impact of matrix effects in LC/MS measurement on the accurate quantification of neonicotinoid pesticides in food by isotope-dilution mass spectrometry
Nakamura, Keisuke, Otake, Takamitsu, Hanari, Nobuyasu, Takatsu, Akiko
Published in Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes (03.06.2019)
Published in Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes (03.06.2019)
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Journal Article
Evaluation of the performance of 57 Japanese participating laboratories by two types of z-scores in proficiency test for the quantification of pesticide residues in brown rice
Otake, Takamitsu, Yarita, Takashi, Aoyagi, Yoshie, Numata, Masahiko, Takatsu, Akiko
Published in Analytical and bioanalytical chemistry (01.11.2014)
Published in Analytical and bioanalytical chemistry (01.11.2014)
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Journal Article
Proficiency testing for determination of pesticide residues in soybean: Comparison of assigned values from participants׳ results and isotope-dilution mass spectrometric determination
Yarita, Takashi, Otake, Takamitsu, Aoyagi, Yoshie, Kuroiwa, Takayoshi, Numata, Masahiko, Takatsu, Akiko
Published in Talanta (Oxford) (01.01.2015)
Published in Talanta (Oxford) (01.01.2015)
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Journal Article
Comparison of Assigned Values from Participants' Results, Spiked Concentrations of Test Samples, and Isotope Dilution Mass Spectrometric Results in Proficiency Testing for Pesticide Residue Analysis
Yarita, Takashi, Otake, Takamitsu, Aoyagi, Yoshie, Takasaka, Noriko, Suzuki, Tatsuya, Watanabe, Takaho
Published in Journal of AOAC International (01.07.2018)
Published in Journal of AOAC International (01.07.2018)
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Journal Article
Proficiency Testing for Quantification of Pesticide Residues in Treated Brown Rice Samples: Comparison of Performance of Japanese Official Multiresidue, Modified QuEChERS, and QuEChERS Methods
Otake, Takamitsu, Yarita, Takashi, Sakamoto, Tomoko, Numata, Masahiko, Takatsu, Akiko
Published in Journal of AOAC International (01.05.2016)
Published in Journal of AOAC International (01.05.2016)
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Journal Article
Difference between Consensus Value of Participants’ Results and Isotope-Dilution Mass Spectrometric Results in Proficiency Testing for Pesticide Residues in Husked Wheat
YARITA, Takashi, OTAKE, Takamitsu, AOYAGI, Yoshie, NUMATA, Masahiko, TAKATSU, Akiko
Published in Analytical Sciences (2016)
Published in Analytical Sciences (2016)
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Journal Article
Exposure to phthalate esters from indoor environment
Otake, Takamitsu, Yoshinaga, Jun, Yanagisawa, Yukio
Published in Journal of exposure analysis and environmental epidemiology (01.11.2004)
Published in Journal of exposure analysis and environmental epidemiology (01.11.2004)
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Journal Article
Development of Certified Reference Material for Quantification of Two Pesticides in Brown Rice
Otake, Takamitsu, Itoh, Nobuyasu, Aoyagi, Yoshie, Matsuo, Mayumi, Hanari, Nobuyasu, Otsuka, Satoko, Yarita, Takashi
Published in Journal of agricultural and food chemistry (23.09.2009)
Published in Journal of agricultural and food chemistry (23.09.2009)
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Journal Article
Development of Green Onion and Cabbage Certified Reference Materials for Quantification of Organophosphorus and Pyrethroid Pesticides
Otake, Takamitsu, Yarita, Takashi, Aoyagi, Yoshie, Kuroda, Youko, Numata, Masahiko, Iwata, Hitoshi, Mizukoshi, Kazushi, Nakamura, Munetomo, Watai, Masatoshi, Mitsuda, Hitoshi, Fujikawa, Takashi, Ota, Hidekazu
Published in Journal of agricultural and food chemistry (24.08.2011)
Published in Journal of agricultural and food chemistry (24.08.2011)
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Journal Article
Cadmium, lead, and selenium in cord blood and thyroid hormone status of newborns
Iijima, Kentaro, Otake, Takamitsu, Yoshinaga, Jun, Ikegami, Miyuki, Suzuki, Emiko, Naruse, Hiroshi, Yamanaka, Tomoya, Shibuya, Noriko, Yasumizu, Takehiko, Kato, Nobumasa
Published in Biological trace element research (01.10.2007)
Published in Biological trace element research (01.10.2007)
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Journal Article
Analysis of Organic Esters of Plasticizer in Indoor Air by GC−MS and GC−FPD
Otake, Takamitsu, Yoshinaga, Jun, Yanagisawa, Yukio
Published in Environmental science & technology (01.08.2001)
Published in Environmental science & technology (01.08.2001)
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