| Optimization of roasting conditions for high-quality Arabica coffee KYK Madihah, AH Zaibunnisa, S Norashikin, O Rozita, J Misnawi International Food Research Journal 20 (4), 1623, 2013 | 71* | 2013 |
| Chemometric application in identifying sources of organic contaminants in Langat river basin R Osman, N Saim, H Juahir, MP Abdullah Environmental monitoring and assessment 184, 1001-1014, 2012 | 64 | 2012 |
| Chemometric approach to validating faecal sterols as source tracer for faecal contamination in water N Saim, R Osman, DRSA Spian, MZ Jaafar, H Juahir, MP Abdullah, ... Water research 43 (20), 5023-5030, 2009 | 58 | 2009 |
| Subcritical water extraction of essential oil from coriander (Coriandrum sativum L.) seeds S Naorashikin, O Rozita, AHMY Wan, DH Rossuriati Malaysian Journal of Analytical Sciences 12 (1), 22-24, 2008 | 41 | 2008 |
| Determination of phthalate plasticisers in palm oil using online solid phase extraction-liquid chromatography (SPE-LC) N Ibrahim, R Osman, A Abdullah, N Saim Journal of Chemistry 2014, 2014 | 35 | 2014 |
| The environmental contamination by organochlorine insecticides of some agricultural areas in Malaysia Z Zakaria, LY Heng, P Abdullah, R Osman, L Din Malaysian Journal of Chemistry 5 (1), 78-85, 2003 | 34 | 2003 |
| Disk solid-phase extraction of multi-class pharmaceutical residues in tap water and hospital wastewater, prior to ultra-performance liquid chromatographic-tandem mass … HIS Kafeenah, R Osman, NKA Bakar RSC advances 8 (70), 40358-40368, 2018 | 25 | 2018 |
| Combination of sensory, chromatographic, and chemometrics analysis of volatile organic compounds for the discrimination of authentic and unauthentic harumanis mangoes SR Zakaria, N Saim, R Osman, Z Abdul Haiyee, H Juahir Molecules 23 (9), 2365, 2018 | 19 | 2018 |
| Selective extraction of Organic Contaminants from Soil Using Pressurised Liquid Extraction NS Rozita Osman Journal of Chemistry 2013, 1-8, 2012 | 18* | 2012 |
| Occurrence, source apportionment and environmental risk assessment of pharmaceuticals in Klang river, Malaysia SNM Subari, R Osman, N Saim Pertanika journal of science and technology 25 (S3), 119-128, 2017 | 14 | 2017 |
| Effect of mobile phase pH on the electrospray ionization efficiency and qualitative analysis of pharmaceuticals in ESI+ LC-MS/MS HIS Kafeenah, R Osman, NKA Bakar Journal of chromatographic science 57 (9), 847-854, 2019 | 12 | 2019 |
| Development of Chromatographic Fingerprints of Eurycoma longifolia (Tongkat Ali) Roots Using Online Solid Phase Extraction-Liquid Chromatography (SPE-LC) NN Zaini, R Osman, H Juahir, N Saim Molecules 21 (5), 583, 2016 | 12 | 2016 |
| A Study on the Migration of Styrene from Polystyrene Cups to Drinks using Online Solid-Phase Extraction Liquid Chromatography (SPE-LC). NI Norashikin Saim, Rozita Osman, Hurin Ain Wan Abi The Malaysian Journal of Analytical Sciences 16 (1), 49-55, 2012 | 10 | 2012 |
| Accelerated solvent extraction method with one-step clean-up for hydrocarbons in soil NH Mamat Ghani, N Sain, R Osman, ZA Munir Malaysian Journal of Analytical Sciences 11, 2007 | 10 | 2007 |
| Malaysian private general practitioners’ views and experiences on continuous professional development: A qualitative study NA Samad, AM Zain, R Osman, PY Lee, CJ Ng Malaysian family physician: the official journal of the Academy of Family …, 2014 | 9 | 2014 |
| Tandem solid phase extraction for the determination of pharmaceuticals in wastewater DAS Buangan Malaysian Journal of Analytical Sciences 17 (2), 262-271, 2013 | 8 | 2013 |
| Use of Enterococcus, BST and sterols for poultry pollution source tracking in surface and groundwater V Furtula, CR Jackson, R Osman, PA Chambers Environmental Health-Emerging Issues and Practice, 57-78, 2012 | 8* | 2012 |
| The trend in established analytical techniques in the investigation of physicochemical properties and various constituents of honey: A review G Manickavasagam, M Saaid, R Osman Food Analytical Methods 15 (11), 3116-3152, 2022 | 7 | 2022 |
| Simultaneous extraction, derivatization and clean-up of sterols from soil using accelerated solvent extraction N Saim, M Mohammad, RD Hamid, R Osman Malaysian Journal of Analytical Sciences 12 (2), 500-504, 2008 | 7 | 2008 |
| Optimization of headspace solid phase microextraction (HS-SPME) for the extraction of volatile organic compounds (VOCs) in Mangoes (Harumanis cv.) using 2 stages multivariate … SR Zakaria, R Tajuddin, R Osman, N Saim, M Saaid Pertanika J. Sci. Technol 25, 167-174, 2017 | 5 | 2017 |
