Works matching AU Hirokawa, Takeshi

Results: 26

Simultaneous determination of metal ions, amino acids, and other small biogenic molecules in human serum by capillary zone electrophoresis with transient isotachophoretic preconcentration.

Published in:

Journal of Separation Science, 2005, v. 28, n. 6, p. 522, doi. 10.1002/jssc.200400070

By:

Hikaru Okamoto;
Andrei R. Timerbaev;
Takeshi Hirokawa

Publication type:

Article

Direct observation of fractional change of niobium ionic species in a solution by means of X-ray absorption fine structure spectroscopy.

Published in:

XRS: X-ray Spectrometry, 2012, v. 41, n. 4, p. 259, doi. 10.1002/xrs.2390

By:

Kubouchi, Yuta;
Hayakawa, Shinjiro;
Namatame, Hirofumi;
Hirokawa, Takeshi

Publication type:

Article

Speciation studies by capillary electrophoresis – simultaneous determination of iodide and iodate in seawater.

Published in:

Analytical & Bioanalytical Chemistry, 2004, v. 378, n. 7, p. 1836, doi. 10.1007/s00216-004-2506-4

By:

Huang, Zhuo;
Ito, Kazuaki;
Timerbaev, Andrei R.;
Hirokawa, Takeshi

Publication type:

Article

Pyrohydrolysis Coupled to Ion Chromatography for Sensitive Determination of Iodine in Food-Related Materials.

Published in:

Analytical Letters, 2012, v. 45, n. 8, p. 862, doi. 10.1080/00032719.2012.655659

By:

Shinoda, Tetsuhiro;
Miyamoto, Nobuyoshi;
Kuromoto, Tohru;
Ito, Kazuaki;
Morikawa, Hisashi;
Okamoto, Yasuaki;
Fujiwara, Terufumi;
Hirokawa, Takeshi

Publication type:

Article

DNA aggregation and cleavage in CGE induced by high electric field in aqueous solution accompanying electrokinetic sample injection.

Published in:

Electrophoresis, 2013, v. 34, n. 22/23, p. 3155, doi. 10.1002/elps.201300363

By:

Ye, Xiaoxue;
Mori, Satomi;
Xu, Zhongqi;
Hayakawa, Shinjiro;
Hirokawa, Takeshi

Publication type:

Article

Electrokinetic supercharging preconcentration prior to CGE analysis of DNA: Sensitivity depends on buffer viscosity and electrode configuration.

Published in:

Electrophoresis, 2013, v. 34, n. 4, p. 583, doi. 10.1002/elps.201200338

By:

Ye, Xiaoxue;
Mori, Satomi;
Yamada, Mihoro;
Inoue, Junji;
Xu, Zhongqi;
Hirokawa, Takeshi

Publication type:

Article

A novel hybrid mode of sample injection to enhance CZE sensitivity for simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its degradation products.

Published in:

Electrophoresis, 2011, v. 32, n. 12, p. 1486, doi. 10.1002/elps.201100144

By:

Kaewchuay, Netnapit;
Yakushiji, Yuki;
Fukushi, Keiichi;
Saito, Keiitsu;
Hirokawa, Takeshi

Publication type:

Article

Electrokinetic supercharging with a system-induced terminator and an optimized capillary versus electrode configuration for parts-per-trillion detection of rare-earth elements in CZE.

Published in:

Electrophoresis, 2011, v. 32, n. 10, p. 1195, doi. 10.1002/elps.201000582

By:

Xu, Zhongqi;
Kawahito, Kouji;
Ye, Xiaoxue;
Timerbaev, Andrei R.;
Hirokawa, Takeshi

Publication type:

Article

Investigation of the pH gradient formation and cathodic drift in microchip isoelectric focusing with imaged UV detection.

Published in:

Electrophoresis, 2010, v. 31, n. 21, p. 3558, doi. 10.1002/elps.201000395

By:

Xu, Zhongqi;
Okabe, Noboru;
Arai, Akihiro;
Hirokawa, Takeshi

Publication type:

Article

Electrokinetic sample injection for high-sensitivity CZE (part 2): Improving the quantitative repeatability and application of electrokinetic supercharging-CZE to the detection of atmospheric electrolytes.

Published in:

Electrophoresis, 2009, v. 30, n. 20, p. 3534, doi. 10.1002/elps.200900198

By:

Xu, Zhongqi;
Koshimidzu, Eiji;
Hirokawa, Takeshi

Publication type:

Article

Electrokinetic sample injection for high-sensitivity capillary zone electrophoresis (part 1): Effects of electrode configuration and setting.

Published in:

Electrophoresis, 2008, v. 29, n. 18, p. 3786, doi. 10.1002/elps.200800172

By:

Hirokawa, Takeshi;
Koshimidzu, Eiji;
Xu, Zhongqi

Publication type:

Article

Study of a novel sample injection method (floating electrokinetic supercharging) for high-performance microchip electrophoresis of DNA fragments.

Published in:

Electrophoresis, 2008, v. 29, n. 9, p. 1829, doi. 10.1002/elps.200700590

By:

Hirokawa, Takeshi;
Takayama, Yoichi;
Arai, Akihiro;
Xu, Zhongqi

Publication type:

Article

Recent advances of transient isotachophoresis-capillary electrophoresis in the analysis of small ions from high-conductivity matrices.

Published in:

Electrophoresis, 2006, v. 27, n. 1, p. 323, doi. 10.1002/elps.200500320

By:

Timerbaev, Andrei R.;
Hirokawa, Takeshi

Publication type:

Article

Impact of reservoir potentials on the analyte behavior in microchip electrophoresis: Computer simulation and experimental validation for DNA fragments.

Published in:

Electrophoresis, 2005, v. 26, n. 2, p. 383, doi. 10.1002/elps.200410151

By:

Xu, Zhongqi;
Nakamura, Yousuke;
Hirokawa, Takeshi

Publication type:

Article

Performance of electrokinetic supercharging for high-sensitivity detection of DNA fragments in chip gel electrophoresis.

Published in:

Electrophoresis, 2004, v. 25, n. 21/22, p. 3875, doi. 10.1002/elps.200406061

By:

Zhongqi Xu;
Tsutomu Nishine;
Akihiro Arai;
Takeshi Hirokawa

Publication type:

Article

Electrokinetic supercharging preconcentration and microchip gel electrophoretic separation of sodium dodecyl sulfate-protein complexes.

Published in:

Electrophoresis, 2003, v. 24, n. 21, p. 3821, doi. 10.1002/elps.200305625

By:

Zhongqi Xu;
Tomomi Ando;
Tsutomu Nishine;
Akihiro Arai;
Takeshi Hirokawa

Publication type:

Article

Trace ion analysis of seawater by capillary electrophoresis: Determination of iodide using transient isotachophoretic preconcentration.

Published in:

Electrophoresis, 2003, v. 24, n. 14, p. 2328, doi. 10.1002/elps.200305445

By:

Takeshi Hirokawa;
Teppei Ichihara;
Kazuaki Ito;
Andrei R. Timerbaev

Publication type:

Article

High-sensitive capillary zone electrophoresis analysis by electrokinetic injection with transient isotachophoretic preconcentration: Electrokinetic supercharging.

Published in:

Electrophoresis, 2003, v. 24, n. 3, p. 498, doi. 10.1002/elps.200390058

By:

Hirokawa, Takeshi;
Okamoto, Hikaru;
Gaš, Bohuslav

Publication type:

Article

Generation of an X-ray microbeam for spectromicroscopy at SPring-8 BL39XU.

Published in:

Journal of Synchrotron Radiation, 2001, v. 8, n. 2, p. 328, doi. 10.1107/S0909049500018446

By:

Hayakawa, Shinjjiro;
Ikuta, Natsuki;
Suzuki, Motohiro;
Wakatsuki, Masao;
Hirokawa, Takeshi

Publication type:

Article

ANALYSIS OF TRACE RARE EARTH ELEMENTS IN MISCH METAL BY MEANS OF ITP-PIXE METHOD.

Published in:

International Journal of PIXE, 1993, v. 3, n. 1, p. 89, doi. 10.1142/S0129083593000082

By:

HU, JIAN-YING;
HIROKAWA, TAKESHI;
NISHIYAMA, FUMITAKA;
KIMURA, GOJI;
KISO, YOSHIYUKI;
ITO, KAZUAKI;
SHOTO, EIJI

Publication type:

Article

APPLICATION OF PIXE TO SEPARATION SCIENCE - TRACE ELEMENT ANALYSIS BY A COMBINED METHOD, ISOTACHOPHORESIS-PIXE -.

Published in:

International Journal of PIXE, 1993, v. 3, n. 1, p. 1, doi. 10.1142/S0129083593000021

By:

HIROKAWA, TAKESHI;
KISO, YOSHIYUKI

Publication type:

Article

TRACE ANALYSIS OF ALUMINUM METAL REFERENCE STANDARDS BY PIXE METHOD.

Published in:

International Journal of PIXE, 1992, v. 2, n. 1, p. 79, doi. 10.1142/S0129083592000099

By:

HIROKAWA, TAKESHI;
TANAKA, SHINJI;
YOSHIDA, SATOSHI;
NISHIYAMA, FUMITAKA;
KISO, YOSHIYUKI;
ITO, KAZUAKI;
SHOTO, EIJI

Publication type:

Article

Determination of nitrite, nitrate, bromide, and iodide in seawater by ion chromatography with UV detection using dilauryldimethylammonium-coated monolithic ODS columns and sodium chloride as an eluent.

Published in:

Analytical & Bioanalytical Chemistry, 2012, v. 404, n. 8, p. 2513, doi. 10.1007/s00216-012-6405-9

By:

Ito, Kazuaki;
Nomura, Ryosuke;
Fujii, Takuya;
Tanaka, Masahito;
Tsumura, Tomoaki;
Shibata, Hiroyuki;
Hirokawa, Takeshi

Publication type:

Article

Change of migration time and separation window accompanied by field-enhanced sample stacking in capillary zone electrophoresis.

Published in:

Electrophoresis, 2001, v. 22, n. 16, p. 3444, doi. 10.1002/1522-2683(200109)22:16<3444::AID-ELPS3444>3.0.CO;2-Q

By:

Hirokawa, Takeshi;
Ikuta, Natsuki;
Yoshiyama, Tatsuya;
Okamoto, Hikaru

Publication type:

Article

Operational modes for transient isotachophoretic preconcentration-capillary zone electrophoresis and detectable concentration of rare earth ions.

Published in:

Electrophoresis, 2001, v. 22, n. 16, p. 3483, doi. 10.1002/1522-2683(200109)22:16<3483::AID-ELPS3483>3.0.CO;2-O

By:

Hirokawa, Takeshi;
Okamoto, Hikaru;
Ikuta, Natsuki

Publication type:

Article

Electropherogram of capillary zone electrophoresis with effective mobility axis as a transverse axis and its analytical utility I. Transformation applying the hypothetical electroosmotic flow.

Published in:

Electrophoresis, 2000, v. 21, n. 2, p. 360, doi. 10.1002/(SICI)1522-2683(20000101)21:2<360::AID-ELPS360>3.0.CO;2-T

By:

Ikuta, Natsuki;
Yamada, Yuji;
Hirokawa, Takeshi

Publication type:

Article