Characterisation of volatile components of Pinotage wines using comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC× GC–TOFMS) BT Weldegergis, A De Villiers, C McNeish, S Seethapathy, A Mostafa, ... Food Chemistry 129 (1), 188-199, 2011 | 117 | 2011 |
Solid phase extraction in combination with comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry for the detailed investigation of … BT Weldegergis, AM Crouch, T Górecki, A De Villiers Analytica Chimica Acta 701 (1), 98-111, 2011 | 106 | 2011 |
Development of a solid-phase extraction procedure for the simultaneous determination of polyphenols, organic acids and sugars in wine A De Villiers, F Lynen, A Crouch, P Sandra Chromatographia 59, 403-409, 2004 | 103 | 2004 |
Classification of South African red and white wines according to grape variety based on the non-coloured phenolic content A De Villiers, P Majek, F Lynen, A Crouch, H Lauer, P Sandra European Food Research and Technology 221, 520-528, 2005 | 99 | 2005 |
Preparation and surface characterization of Ti/SnO2–RuO2–IrO2 thin films as electrode material for the oxidation of phenol ME Makgae, CC Theron, WJ Przybylowicz, AM Crouch Materials Chemistry and Physics 92 (2-3), 559-564, 2005 | 98 | 2005 |
Stir bar sorptive extraction combined with GC-MS analysis and chemometric methods for the classification of South African wines according to the volatile composition A Tredoux, A de Villiers, P Májek, F Lynen, A Crouch, P Sandra Journal of agricultural and food chemistry 56 (12), 4286-4296, 2008 | 95 | 2008 |
The analysis of estrone and 17β-estradiol by stir bar sorptive extraction–thermal desorption–gas chromatography/mass spectrometry: Application to urine samples after oral … A Stopforth, BV Burger, AM Crouch, P Sandra Journal of Chromatography B 856 (1-2), 156-164, 2007 | 64 | 2007 |
Performance of sol–gel Titanium Mixed Metal Oxide electrodes for electro-catalytic oxidation of phenol ME Makgae, MJ Klink, AM Crouch Applied Catalysis B: Environmental 84 (3-4), 659-666, 2008 | 63 | 2008 |
Sol–gel preparation and characterisation of mixed metal tin oxide thin films PGL Baker, RD Sanderson, AM Crouch Thin solid films 515 (17), 6691-6697, 2007 | 61 | 2007 |
A rapid method of diagnosing pulmonary tuberculosis using stir bar sorptive extraction–thermal desorption–gas chromatography–mass spectrometry A Stopforth, A Tredoux, A Crouch, P van Helden, P Sandra Journal of Chromatography A 1071 (1-2), 135-139, 2005 | 61 | 2005 |
Atmospheric mercury measurements at cape point, south africa PGL Baker, EG Brunke, F Slemr, AM Crouch Atmospheric Environment 36 (14), 2459-2465, 2002 | 61 | 2002 |
Chemometric investigation of the volatile content of young South African wines BT Weldegergis, A de Villiers, AM Crouch Food Chemistry 128 (4), 1100-1109, 2011 | 56 | 2011 |
Acrolein in wine: Importance of 3-hydroxypropionaldehyde and derivatives in production and detection R Bauer, DA Cowan, A Crouch Journal of agricultural and food chemistry 58 (6), 3243-3250, 2010 | 54 | 2010 |
Application of a headspace sorptive extraction method for the analysis of volatile components in South African wines BT Weldegergis, AGJ Tredoux, AM Crouch Journal of agricultural and food chemistry 55 (21), 8696-8702, 2007 | 49 | 2007 |
Urinalysis of 4-hydroxynonenal, a marker of oxidative stress, using stir bar sorptive extraction–thermal desorption–gas chromatography/mass spectrometry A Stopforth, BV Burger, AM Crouch, P Sandra Journal of Chromatography B 834 (1-2), 134-140, 2006 | 47 | 2006 |
Quantification of testosterone and epitestosterone in human urine samples by stir bar sorptive extraction–thermal desorption–gas chromatography/mass spectrometry: Application … A Stopforth, CJ Grobbelaar, AM Crouch, P Sandra Journal of separation science 30 (2), 257-265, 2007 | 45 | 2007 |
Analysis of volatiles in Pinotage wines by stir bar sorptive extraction and chemometric profiling BT Weldegergis, AM Crouch Journal of agricultural and food chemistry 56 (21), 10225-10236, 2008 | 40 | 2008 |
A robust capillary electrophoresis method for the determination of organic acids in wines A De Villiers, F Lynen, A Crouch, P Sandra European Food Research and Technology 217, 535-540, 2003 | 40 | 2003 |
The use of GC× GC with time‐of‐flight mass spectrometry to investigate dienes and Diels–Alder polymerisation products in high‐temperature Fischer–Tropsch‐based fuels R van der Westhuizen, A Crouch, P Sandra Journal of separation science 31 (19), 3423-3428, 2008 | 38 | 2008 |
Electrochemical study of cerium (IV) in the presence of ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetate (DTPA) ligands P Modiba, AM Crouch Journal of Applied Electrochemistry 38, 1293-1299, 2008 | 38 | 2008 |