Qun Xu

发表

Clarification of the USP compendial procedure for phenoxybenzamine hydrochloride via updating impurity profiles.

Qun Xu, Donald Min, Rachael Petr, 2020, Journal of pharmaceutical and biomedical analysis.

Quantitative analysis of 3-isopropylamino-1,2-propanediol as a degradation product of metoprolol in pharmaceutical dosage forms by HILIC-CAD

Qun Xu, Shane Tan, 2019, Journal of pharmaceutical analysis.

New microdialysis-electrochemical device for simultaneous determination of ascorbic acid and 5-hydroxyindole-3-acetic acid in rat striatum

Song Zhang, Xuni Cao, Y. Xian, 2002 .

Development and evaluation of a HILIC-MS method for the determination of amino acid and non-amino acid impurities in histidine.

Qun Xu, F. Tadjimukhamedov, 2022, Journal of pharmaceutical and biomedical analysis.

Highly sensitive determination of hydrazine ion by ion-exclusion chromatography with ion-exchange enhancement of conductivity detection.

Wenzhi Hu, M. Mori, Kazuhiko Tanaka, 2004, Journal of chromatography. A.

Amperometric detection studies of poly-o-phenylenediamine film for the determination of electroinactive anions in ion-exclusion chromatography

H. Haraguchi, Kazuhiko Tanaka, Litong Jin, 2000 .

Application of a single electrode, modified with polydiphenylamine and dodecyl sulfate, for the simultaneous amperometric determination of electro-inactive anions and cations in ion chromatography.

Qingjiang Wang, Kazuhiko Tanaka, Litong Jin, 2003, Journal of chromatography. A.

High-speed simultaneous ion-exclusion/cation-exchange chromatography of anions and cations on a weakly acidic cation-exchange resin column.

P. Haddad, Wenzhi Hu, K. Hasebe, 2003, Journal of chromatography. A.

Dodecylsulfate-coated monolithic octadecyl-bonded silica stationary phase for high-speed separation of hydrogen, magnesium and calcium in rainwater.

Kazuhiko Tanaka, Wenzhi Hu, M. Mori, 2004, Journal of chromatography. A.

Ion chromatographic determination of hydroxide ion on monolithic reversed-phase silica gel columns coated with nonionic and cationic surfactants.

Kazuhiko Tanaka, P. Haddad, Wenzhi Hu, 2004, Journal of chromatography. A.

Determination of monovalent inorganic anions in high-ionic-strength samples by electrostatic ion chromatography with suppressed conductometric detection.

P. Haddad, Wenzhi Hu, M. Mori, 2004, Journal of chromatography. A.

Determination of some aliphatic carboxylic acids in anaerobic digestion process waters by ion-exclusion chromatography with conductimetric detection on a weakly acidic cation-exchange resin column.

Wenzhi Hu, M. Mori, Kazuhiko Tanaka, 2004, Journal of chromatography. A.

Determination of trace scandium by ion-exchanger phase spectrophotometry withp-nitrochlorophosphonazo

Qun Xu, Jiaomai Pan, Chung-Gin Hsu, 1997 .

Structural confirmation of sulconazole sulfoxide as the primary degradation product of sulconazole nitrate

Kristie M. Adams, J. Simpson, Qun Xu, 2017, Journal of pharmaceutical analysis.

Monolithic octadecylsilyl-silica gel column for the high-speed ion chromatographic determination of acidity.

Wenzhi Hu, K. Hasebe, M. Mori, 2003, Journal of chromatography. A.

Ion chromatographic separation of hydrogen ion and other common mono- and divalent cations.

P. Haddad, Wenzhi Hu, M. Mori, 2004, Journal of chromatography. A.

Selective determination of ammonium ions by high-speed ion-exclusion chromatography on a weakly basic anion-exchange resin column.

Wenzhi Hu, K. Hasebe, M. Mori, 2003, Journal of chromatography. A.

Ion-exclusion chromatography with conductimetric detection of aliphatic carboxylic acids on a weakly acidic cation-exchange resin by elution with benzoic acid-beta-cyclodextrin.

P. Haddad, J. Fritz, Wenzhi Hu, 2003, Journal of chromatography. A.

Controlling the quality of maca (Lepidium meyenii) dietary supplements: Development of compendial procedures for the determination of intact glucosinolates in maca root powder products.

M. Monagas, Jennifer L. Belsky, Qun Xu, 2021, Journal of pharmaceutical and biomedical analysis.

Simultaneous amperometric detection of electroinactive anions and cations in ion chromatography

H. Haraguchi, Kazuhiko Tanaka, Wen Zhang, 2000 .

Vacancy ion-exclusion chromatography of haloacetic acids on a weakly acidic cation-exchange resin.

P. Haddad, M. Ding, Wenzhi Hu, 2003, Journal of chromatography. A.

High-speed ion-exclusion chromatography of dissolved carbon dioxide on a small weakly acidic cation-exchange resin column with ion-exchange enhancement columns of conductivity detection.

Wenzhi Hu, M. Mori, Kazuhiko Tanaka, 2005, Journal of chromatography. A.

Continuous and simultaneous determination of anions and cations in rainwater by ion chromatography

Wen Zhang, Qun Xu, C. Xu, 2000 .

Development and Validation of a Species-specific PCR Method for the Identification of Ginseng Species Using Orthogonal Approaches

Sara M. Handy, Nandakumara D. Sarma, Qun Xu, 2021, Planta Medica.

In vivo monitoring of the monoamine neurotransmitters in rat brain using microdialysis sampling with liquid chromatography electrochemical detection

Song Zhang, Jiye Jin, Wen Zhang, 2001 .

Development and validation of a hydrophilic interaction chromatography method coupled with a charged aerosol detector for quantitative analysis of nonchromophoric α-hydroxyamines, organic impurities of metoprolol.

Qun Xu, Shane Tan, K. Petrova, 2016, Journal of pharmaceutical and biomedical analysis.

Advancing USP compendial methods for fixed dose combinations: A case study of metoprolol tartrate and hydrochlorothiazide tablets

Qun Xu, 2018, Journal of pharmaceutical analysis.