Orapin Chienthavorn

Superheated Heavy Water as the Eluent for HPLC-NMR and HPLC-NMR-MS of Model Drugs

Roger M. Smith, Orapin Chienthavorn, Ian D. Wilson et al. · Analytical Chemistry · 1999 · 69 citations

Pharmacy, Chemistry, Pharmaceutical Analysis +17

Buffered superheated water as an eluent for reversed-phase high performance liquid chromatography

Orapin Chienthavorn, Roger M. Smith · Chromatographia · 1999 · 49 citations

Natural Sciences, Chemistry, Analytical Chemistry +7

Occurrence of phthalate esters in the eastern coast of Thailand

Fairda Malem, Peerapong Soonthondecha, Patchara Khawmodjod et al. · Environmental Monitoring and Assessment · 2019 · 45 citations

Natural Sciences, Chemistry, Toxicology +7

Superheated water chromatography-nuclear magnetic resonance spectroscopy and mass spectrometry of vitamins

Orapin Chienthavorn, Roger M. Smith, Shikha Saha et al. · Journal of Pharmaceutical and Biomedical Analysis · 2004 · 41 citations

Natural Sciences, Chemistry, Food Science +12

Selective deuterium exchange during superheated heavy water chromatography–nuclear magnetic resonance spectroscopy–mass spectrometry of sulfonamides

Roger M. Smith, Orapin Chienthavorn, Shikha Saha et al. · Journal of Chromatography A · 2000 · 36 citations

Natural Sciences, Biochemistry, Chemistry +10