Application of dispersive liquid-liquid microextraction based on solidification of floating organic droplet in the analysis of anti-depressant drugs

by Siti Umairah , Mokhtar
Published 2011

Comparison of total phenolic and flavonoids contents in Malaysian propolis extract with two different extraction solvents

by Siti Umairah, Mokhtar, Hooi, H'ng S., Lene, Darlene T, Jayaraman, S.
Published 2019

Formulation of herbal cream based on Ziziphus Mauritiana leaves extract and evaluation on physicochemical properties

by Siti Umairah, Mokhtar, Ashviny, Murugan, Che Syahira, Che Awang
Published 2020

Preliminary studies on extraction of propolis using vitamin E d-ɑ-tocopheryl polyethylene glycol succinate (vitamin E TPGS) and compare their antimicrobial activities

by Yee, Tong Kong, Viviana, Abdullah, Siti Umairah, Mokhtar, Rajaletchumy, Veloo Kutty
Published 2020

Determination of organophosphorus pesticides by dispersive liquid-liquid microextraction coupled with gas chromatography-electron capture detection

by Mohd Marsin, Sanagi, Siti Umairah, Mokhtar, Maizatul Akmam, Miskam, Wan Aini, Wan Ibrahim

Application of dispersive liquid-liquid microextraction based on solidification of floating organic droplet to the analysis of antidepressant drugs in water samples

by Mohd Marsin Sanagi, Siti Umairah Mokhtar, Wan Aini Wan Ibrahim, Hassan Y. Aboul-Enein
Published 2013

Simultaneous analysis of drugs in forensic cases by liquid chromatography–high‑resolution orbitrap mass spectrometry

by Siti Umairah, Mokhtar, Kulsing, Chadin, Althakafy, Jalal T., Kotsos, Alex, Drummer, O. H., Marriott, P. J.
Published 2020

Simultaneous analysis of drugs in forensic cases by liquid chromatography-high-resolution Orbitrap Mass Spectrometry

by Siti Umairah, Mokhtar, Kulsing, Chadin, Althakafy, Jalal T., Kotsos, Alex, Drummer, O. H., Marriott, P. J.
Published 2020

Direct Ionic Liquid Extractant Injection for Volatile Chemical Analysis - A Gas Chromatography Sampling Technique

by Siti Umairah, Mokhtar, Chin, S.-T., Vijayaraghavan, R., MacFarlane, D. R., Drummer, O. H., Marriott, P. J.
Published 2015

Rapid Determination of Sildenafil and Its Analogues in Dietary Supplements Using Gas Chromatography-Triple Quadrupole Mass Spectrometry

by Siti Umairah, Mokhtar, Chin, S. -T., Kee, C. L., Low, M. Y., Drummer, O. H., Marriott, P. J.
Published 2016