K
Kenji Hara
Researcher at Fukuoka University
Publications - 115
Citations - 1382
Kenji Hara is an academic researcher from Fukuoka University. The author has contributed to research in topics: Electrode & Solid-phase microextraction. The author has an hindex of 19, co-authored 115 publications receiving 1292 citations.
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Journal ArticleDOI
Simultaneous determination of methamphetamine and amphetamine in human urine using pipette tip solid-phase extraction and gas chromatography–mass spectrometry
Takeshi Kumazawa,Chika Hasegawa,Xiao-Pen Lee,Kenji Hara,Hiroshi Seno,Osamu Suzuki,Keizo Sato +6 more
TL;DR: Regression equations for methamphetamine and amphetamine showed excellent linearity in the range of 0.25-200 ng/0.5 ml, and intra- and inter-day coefficients of variations for both stimulants were not greater than 10.8%.
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Detection of amphetamines in urine using head space-solid phase microextraction and chemical ionization selected ion monitoring
TL;DR: An accurate, simple and rapid method for qualitative and quantitative analysis of amphetamine and methamphetamine in urine was developed using head space-solid phase microextraction and gas chromatography-mass spectrometry/chemical ionization selected iron monitoring.
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Simple and simultaneous analysis of fenfluramine, amphetamine and methamphetamine in whole blood by gas chromatography-mass spectrometry after headspace-solid phase microextraction and derivatization.
TL;DR: A simple and sensitive method for the simultaneous analysis of fenfluramine, amphetamine and methamphetamine in whole blood was developed using a headspace-solid phase microextraction (SPME) and derivatization and was applied to a suicide case in which the victim ingested fenFLuramine.
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New method of derivatization and headspace solid-phase microextraction for gas chromatographic-mass spectrometric analysis of amphetamines in hair.
TL;DR: A simple method for hair analysis of methamphetamine (MAMP) and amphetamine (AMP) by gas chromatography-mass spectrometry (GC-MS) was developed using simultaneous headspace solid-phase microextraction (HS-SPME) with derivatization.
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Methamphetamine and amphetamine concentrations in postmortem rabbit tissues.
TL;DR: The feasibility of detecting methamphetamine and its major metabolite, amphetamine, in postmortem tissues over a 2-year period was examined as discussed by the authors, and the results showed that despite long term storage, drug abuse and/or toxicity could be determined, in all tissues examined.